gemcom introduction

8/18/2019 gemcom introduction

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Exploration Chapter 19: Creating Plane Plots

Chapter 19

Creating Plane Plots

In this Chapter

•Introduction

• Types of Plane Plots

• Legends

• General Procedures

• Selecting a Plane

• Preparing Topographic Surface Intersections

• Viewing Prepared Data

Introduction

Much of your work with Gemcom for Windows involves projecting data onto planes or combining it with topographic data on surfaces.

These two-dimensional representations of three-dimensional data

are commonly created from detailed exploration drilling or

mapping data.

You can create plane plots in Gemcom for Windows from four

different types of planes: These are the following:

• Surfaces. Surfaces are horizontal planes that have neither a

specified elevation nor upper or lower elevation limits. As there

is only one surface possibility, you do not need to enter any

parameters to define it.

The coordinate system used for data on surfaces is the worldcoordinate system used throughout the project.


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Section V: Plane Plots Gemcom for Windows

• Plan Views (Horizontal Sections). Plan views are horizontal

planes with specified elevations.

• Vertical Sections. Vertical sections are planes with specific

locations that are vertically oriented.

• Inclined Sections. Inclined sections are planes that have

horizontal top and bottom edges and are inclined in a specified

direction at a specified angle.

For detailed information on sections and how to define them, seeChapter 6: General Data Definitions, Volume I: Core.

Plane Plots on Surfaces

You can produce plane plots that will be used as surfaces. A singlemap is produced from all of the records selected in the database.

You can define the name of the plot files that you create. A suffix

(.GGP) is automatically added to the name that you define. The plot

file is located in the \GCDBnn\TOPOSRFC subdirectory.

Plane Plots on Plan Views

You can produce plane plots on sets of plan views. A single map is

produced for each plan view selected. Multiple plan views can be

produced in a single operation using the same profile.

You can define the name of the plot files that you create. A singlename is used for all of the plot files in the set that you are creating;

each plot file is located in the appropriate sub-directory (the

\GCDBnn\PLANVIEW\ planview_name sub-directory) for the plan

view. A suffix (.GGP) is automatically added to the name that you

define.

Planview_name is the name you gave to the plan view when youdefined its location.


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Plane Plots on Vertical Sections

You can produce plane plots on sets of vertical sections. A singleplot is produced for each section selected. Multiple sections can be


You can define the name of the plot files that you create. A single

name is used for all of the plot files in the set that you are creating;

each plot file is located in the appropriate sub-directory (the

\GCDBnn\ V _SECT\ section_name sub-directory) for the section. A suffix (.GGP) is automatically added to the name that you define.

Section_name is the name you gave to the section when you defined

its location.

Plane Plots on Inclined Sections

You can produce plane plots on sets of inclined sections. A single

plot is produced for each section selected. Multiple sections can be


You can define the name of the plot files that you create. A single

name is used for all of the plot files in the set that you are creating;each plot file is located in the appropriate sub-directory (the

\GCDBnn\I_SECT\ section_name sub-directory) for the section. A

suffix (.GGP) is automatically added to the name that you define.

Section_name is the name you gave to the section when you defined

its location.

Types of Plane Plots

You can use the exploration tools in Gemcom for Windows to create

the following types of plane plots:

• Symbol Plots

• Drillhole Plots


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• Polygon Plots

• Structure Maps

•Grid Cell and Contour Plots• Topographic Surface Intersections

Symbol Plots

Symbol plots are used to display data from any table containing a

coordinate field. Each data point is displayed with a symbol, along with optional annotative data from up to six other fields from the

table.

Symbol plots can be created for surfaces, plan views, vertical

sections and inclined sections.

Before you can create a symbol plot, you must have defined at leastone symbol plot profile.

For more details on creating symbol plots and symbol plot profiles,

see Chapter 20: Symbol Plots and Sections.

Drillhole Plots

Drillhole plots display data from drillhole or traverse workspaces

on surfaces, plan views, vertical sections or inclined sections.

Drillholes and traverses are displayed as trace lines projected onto

the plane, and data from any of the workspace tables can be

displayed at the collar or along the trace of each drillhole or

traverse.

Before you can create a drillhole plot, you must have defined at

least one drillhole plot profile. In addition, if you are creating

drillhole plots on vertical or inclined sections, you can define a grid

profile for the drillhole plot.

For more information on creating drillhole plots and associatedprofiles, see Chapter 21: Drillhole Plots and Sections.


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Polygon Plots

Polygon plots display data from polygon workspaces on surfaces,plan views, vertical sections or inclined sections. Polygons are

displayed with line segments connecting each of the points that

define the polygon. Data from any of the workspace tables can be

displayed either at the approximate centre or next to each point of

the polygon.

Before you can create a polygon plot, you must have defined at leastone polygon plot profile.

For more information on creating polygon plots and polygon plot

profiles, see Chapter 22: Polygon Plots and Sections.

Structure Maps

Structure maps display data from any type of workspace which

contains a coordinate field in at least one table. Each data point is

displayed with a special symbol that describes the particular

geological structure located at that point (for example, bedding,

foliation, faults, etc.).

Structure maps can only be displayed on surfaces or plan views.

Before you can create a structure map, you must have defined a

structure code table and a structure mapping profile.

For more information on creating structure maps, code tables and

profiles, see Chapter 23: Structure Maps.

Grid Cell and Contour Plots

You can produce contour maps from regular grids of data that have

been created from data randomly distributed in space. These grids

can be oriented in any location on surfaces, plan views, vertical

sections and inclined sections.


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Before you can create a contour plot, you must have defined a grid

cell display profile and a grid contour profile.

For more information on creating grid cell contour plots and

associated profiles, see Chapter 24: Gridding and Contouring.

Topographic Surface Intersections

You can interpolate the intersection of the surface topography withone or more vertical sections. The resulting intersection lines can

be displayed on these sections along with other data such as points

or drillhole traces.

For more information on creating topographic surface intersections,

see page 2571.

Legends

You can add a legend to most types of plane plots. The information

in the legend comes from the plot display profile that you specify.

Legends are created as part of the plane plot creation process in

separate files from the plots to which they refer, and are saved in

the appropriate plane subdirectory (i.e., V _SECT, I_SECT, PLANVIEW,

or TOPOSRFC) of the current project. This allows you to bring the

legend file into QuickPlot later separately, either beside your data

or into an individual viewport.

General Procedures

In order to create a plane plot, follow this general procedure:

1. If you are creating a plane plot using a plan view or vertical or

inclined section, ensure that the appropriate section(s) have

been defined (see Chapter 11: The View Menu, Volume I: Core).


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2. Select the plane type (plan view, vertical, inclined, or surface)

and, if applicable, the desired section(s) according to the names

given when the sections were defined originally. For more

information, see the next section in this chapter.

Figure 19-1: A legend for a plot


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3. Define the necessary profiles for the type of plane plot you wish

to create. Most types of plane plot profiles can be used for all

plane types and thus could be defined before you select the

plane type (step 2). However, some profiles are applicable only

for one or two plane types and will not be dimmed on the menu

until you select the appropriate plane type.

For more information on the profiles necessary for a particular

type of plane plot, see the appropriate chapter in this volume.

4. Prepare the desired plane plot. This will include preparing thelegend file, if applicable to the type of plot you are creating. For

more information, see the appropriate chapter in this volume.

5. Plot out the prepared data for viewing on-screen. For more

information, see “Viewing Prepared Data” on page 2573.

Selecting a Plane

Before you can create any type of plane plot, you must choose the

type of plane for which you want to create the plane plot. In

addition, for plan views, vertical sections and inclined sections, you

must also specify one or more previously defined planes.

For information on defining sections or plan views, see Chapter 11:

The View Menu, Volume I: Core.

To select a plane or planes, follow these steps:

1. Choose Tools}} Create Plane Plots

}} Select GGP Planes.

2. In the dialog box that appears, select one of the following four

types of plane:

• Vertical. This option allows you to choose from among the

previously-defined vertical sections. You can select as many

as you want.


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• Inclined. This option allows you to choose from among the

previously defined inclined sections. You can select as many

as you want.

• Plan View. This option allows you to choose from among

the previously defined plan views. You can select as many

as you want.

• None (Surface). Select this option to work with a surface.

3. If you selected Vertical, Inclined or Plan View, you will see adialog box listing the available sections of the type you chose.

Select the desired section(s) from the list and click OK.

You can now proceed to prepare your plane plot.

Preparing Topographic Surface Intersections

You can interpolate the intersection of the surface topography with

each vertical section defined in the active workspace. Then you can

display the intersection line on each section along with other data

such as points or drillhole traces.

Gemcom for Windows uses the STATUSLN.DAT status map file to plot

the surface topography for this operation. This file is created under the

Data submenu on the Polyline menu (Save All Polylines to Status

Map and Save Active Polylines to Status Map) and is located in

the Status Map path as defined in the Gemcom Project Path Editor

( Assign Project Paths on the File menu). For any projects originally

created in pc-xplor, that path will probably be pxdbaa\toposrfc. Formore information on status maps, see Chapter 8: Polylines and

Chapter 13: The Polyline Menu, Volume I: Core.

Gemcom for Windows uses a geometric interpolation technique to

calculate the intersection of each section with the topography as

defined in the status map. First, the section line is laid over the

topography. Then the coordinates are determined by the intersection of the section line and each contour line. These coordinates are sorted


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into order from left to right along the section line and transformed to

the internal coordinate system of the section for display.

Follow this procedure to prepare a topographic surface intersection

with a vertical section:

1. Choose Tools }} Create Plane Plots }} Select GGP Planes.

2. In the Select Section Type dialog box that appears, choose

Vertical and click OK.

3. Select the vertical section(s) you wish to use to create the

topographic/surface intersection plot and click OK.

4. From the Create Plane Plots submenu of the Tools menu,

choose Prepare Topographic Surface Intersections.

Figure 19-2: Interpolation of surface topography onto a section


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5. Gemcom for Windows will display a window showing the

progress of the plotting process. Click OK to clear the window

from the screen when the process is complete.

This function creates a GGP file named TOPOSRFC.GGP which is

stored in the subdirectory of the section used to intersect the

surface topography (status map). If you selected more than one

section in step 2 above, each section subdirectory will contain its

own TOPOSRFC.GGP file. These files can be viewed in the same way

as any of the GGP plane plot files (see the next section).

Viewing Prepared Data

Once you have created your plane plots as outlined in Chapters 19

through 24, you will want to view your new plots. This procedure

creates a PRIMFILE.DAT file, which contains a list of the GGP files you

can view on-screen in 2D mode or bring into QuickPlot for printing.

GGP files are 2D graphics files in a Gemcom-specific format. Your

PRIMFILE.DAT file can list as many plane plot GGP files as you like,

as long as they are all for the same plane type.

If you want to view plotted data for plan views or vertical or inclined

sections, you can view multiple plane plots in two different ways:

• Simultaneously. You can choose to view all selected plane

plots (for one plane or more than one plane) on-screen

simultaneously.

• Sequentially. You can choose to view one or more series of plane

plots one section at a time, by cycling through the availablesections. (Note that if you choose this method, you will not be able

to bring the files directly into QuickPlot, as it will not recognize the

path structure in the PRIMFILE.DAT file. To print out a series of

plane plots, you would want to create QuickPlot batch plots.)

Follow this procedure to view your plotted data on-screen:


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1. Ensure that Gemcom for Windows is in 2D mode, and that you

have selected a plane for which you want to view or print a plot.

2. Choose Tools }} Create Plane Plots }} Update PRIMFILE.DAT with

Prepared Data. Alternatively, you can select Options }}

Create/Modify PRIMFILE.DAT. The Create PRIMFILE.DAT dialog box will appear.

3. In the box entitled Source of GGP Files, select the type of GGP

file you wish to view from among the following five options:

• Vertical Sections

• Inclined Sections• Plan Views

• Surface

• Other

4. If you selected Vertical Sections, Inclined Sections or Plan

Views, the dialog box will appear as it does in Figure 19-3. Do

one of the two following things:

Figure 19-3: Create PRIMFILE. DAT dialog box


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• From the Select One or More Sections list, select the

plane(s) for which you wish to see plotted data. You would

use this method if you wanted to see plots from one or more

planes simultaneously.

or

• Click the Use Active Section checkmark to display plotted

data available for the active plane as defined under the View

Menu (see Chapter 11: The View Menu, Volume I: Core). The

Select One or More Sections list will disappear. In the ggpfile paths listed in the Select One or More ggp Files list, the

name of the plane sub-directory will be replaced by %1, and all

ggp file names will be displayed regardless of the particular

plane(s) to which they apply. This allows you to display

sequentially sets of plane plots created from the same plotting

profile for a series of planes.

If you selected Surfaces, choose the surface(s) you wish to view

from the Select One or More GGP Files box.

If you selected Other, a box entitled Search for GGP Files in

will appear. Enter the path that contains the GGP file you wish

to plot in that box.

5. Choose the GGP file(s) that you wish to display from the Select

One or More GGP Files list. You can choose as many GGP files

from the list as you want.

6. If you wish to view these files in addition to any GGP files that

are already in the current PRIMFILE.DAT file, click the Append to

Existing PRIMFILE.DAT file checkbox. To overwrite the currentPRIMFILE.DAT file, leave the checkbox unselected.

7. Click OK to save your settings and close the dialog box.

8. Ensure that the Options }} Display PRIMFILE.DAT GGP Files

command has been selected. If there is a checkmark adjacent to

this command in the menu, then it is active. If the command is

not active, selecting it will activate it. (Selecting it again will

deactivate it.)


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9. Select Options }} Zoom to GGP Extents to size the window so that

all data from all GGP files in the PRIMFILE.DAT file is visible.

If you clicked on Use Active Section in step 4 and your plots do notappear on-screen immediately, your active plane may not contain the

particular GGP file(s) that you selected. Click the Select Next Plane and

Select Previous Plane buttons (or select these commands from the View

Menu) to cycle through the available planes until you see your data.

These commands also allow you to view a set of plane plots in order.

Printing Plane Plots

If you did not use the Select Active Section option (or if it was not

available) when you created your PRIMFILE.DAT file, you can bring it

directly into QuickPlot for viewing and printing. Follow this

general procedure:

1. Activate QuickPlot as outlined in Chapter 19: Graphics Output,

Volume I: Core.

2. From the QuickPlot File menu, select Open Pre-Selected GGP File.

This will open the GGP files listed in PRIMFILE.DAT.

3. From the QuickPlot Window menu, select Zoom to Data Extents

to ensure that your entire plot is visible.

You can now use QuickPlot to open your legend file (if applicable),

format your plots for printing, and print them out using a printer

or plotter. See the QuickPlot online help for detailed information.

If you did choose the Select Active Section feature, you will notbe able to bring PRIMFILE.DAT directly into QuickPlot, as it will not

recognize the modified path structure used to create the

PRIMFILE.DAT file. In this case, you will have to create a QuickPlot

batch plot. For detailed information on creating batch plots, see

Chapter 19: Graphics Output, Volume I: Core.


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Exploration Chapter 20: Symbol Plane Plots

Chapter 20

Symbol Plane Plots

In this Chapter

• Introduction

• Symbol Plot Profiles

• Preparing Symbol Plots

Introduction

You can display data from any table containing a coordinate field.

Each data point is displayed with a symbol, along with annotative

data from up to six fields from the header table or table containing

the coordinate field (if different from the header table). This type of

display is called a symbol plot.

Symbols can be displayed on surfaces, plan views, vertical sections

and inclined sections. Data is projected orthogonally onto each of

these plane types from within the thicknesses of the planes.

Data for symbol plots can come directly from the database or an

extraction file. If you are using data from the database, you can applyfilters to the data to define selection criteria to plot a subset of data.

Symbols on Surfaces

If you are plotting a symbol map onto a surface, the workspace

coordinate field does not require an elevation value. If the elevationvalue is present, no check is made on this value. No coordinate


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transformation is performed on the point locations: the coordinates

of the points in the graphics file are the same as the coordinates of

the points in the workspace.

Symbols on Plan Views

If you are plotting a symbol map onto a plan view, the coordinate

field in the workspace must have an elevation value. This elevation

value is checked against the lower elevation limit and the upperelevation limit of each plan view selected. A point is only accepted

for a plan view symbol plot if the elevation of the point is greater

than the lower elevation limit and less than or equal to the upper

elevation limit. No coordinate transformation is performed on the

point location: the coordinates in the graphics file are the same as

the coordinates of the points in the workspace.

Symbols on Vertical and Inclined Sections

If you are creating a symbol plot for a vertical or inclined section, the

coordinate field in the workspace must have an elevation value. The

coordinate of each point is transformed to the section coordinate

system, and the local Z coordinate is checked against the towards and

away distances defined for the section. A point is only accepted for a

section if the local Z coordinate of the point falls between these limits.

The coordinates of the graphics file are the local inclined section

coordinates. For more information on vertical section coordinates, see

Chapter 6: General Data Definitions, Volume I: Core. No adjustment

can be made for plunge or dip angles.

Symbol Plot Features

You can control the following features of the symbol plot:

• Symbol type• Symbol size


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• Symbol colour

• Fields to be used

• Text size

• Text colour

• The text position

• The text angle

All of the symbol and text attributes that you define for a symbol

plot are stored in a symbol plot profile. Each profile is given a

name, and you can define as many profiles as you want. When you

want to prepare symbol plots, you can select the profile that youwant to use from a list or by entering its name.

Symbol Plot Profiles

Before you can prepare symbol plots from workspaces or extractionfiles, you will have to define a symbol plot profile in which you can

specify which symbol or text attributes will be used within given

ranges of data or for specific fields.

To create a new symbol plot profile, follow this procedure:

1. Select Tools }} Create Plane Plots }} Define Symbol Plot Profiles. TheSymbol Plot Profile Editor dialog box will appear.

2. Choose Add and type a name for your symbol plot profile. Choose

OK.

3. Decide whether you want your symbol plot profile to be based

on an extraction file or on a complete workspace. At the top of the profile editor dialog box, you will see Symbol Profile based

on data from followed by a button called either Extract File or

Workspace. Clickingthis button allows you to toggle between

these two options. Note that once you have saved a profile, this

option is no longer available (i.e., the button is dimmed).

There are three parameter entry areas in the symbol profileeditor: Symbol Data, Symbol Definition, and Text Definition.

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4. The Symbol Data area allows you to define which data will be

used to create the ranges that the different symbols will

represent. Enter the following parameters:

• Description. Enter a brief description, if desired.

If you are creating a symbol profile based on an extraction file:

• Symbol Column. This parameter allows you to determine the

data type of the numeric data used to define the ranges the

symbols will represent. Select one of the following options:

◊ Elevation. Select this option if the data represents an

elevation.

◊ Real Value. Select this option if the data type chosen is

a real value.

◊ Integer Value. Select this option if the data typechosen is an integer value.

Figure 20-1: Symbol Plot Profile Editor dialog box—Extraction File

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• # Decimal Places. Enter the number of decimal places you

wish to appear on the plot. By definition, an integer value

will have zero (0) decimal places.

If you are creating a symbol profile based on a workspace:

• Location Table. Select the name of the table in which the

field containing the location data (X, Y and Z) for the table

is located.

• Location Field. Select the name of the field in which thelocation data (X, Y, and Z) is found. (Usually, this will be

LOCATION.)

• Symbol Table. Select the name of the table containing the

field to be illustrated by the symbol plot.

• Symbol Field. Select the name of the field which contains

the data to be illustrated by the symbol plot.

5. The Symbol Definition area allows you to define which

symbols will be used to represent specific ranges of values

within the Symbol Field and how these symbols will appear in

the plot. Enter the following parameters for each range that you

wish to define:

• Lower Bound and Upper Bound. Enter a lower and

upper bound to define the desired range of values from the

symbol field.

• Symbol. Select the desired symbol from the pulldown list.

There are seventeen different symbols available:

Symbol Name

Ÿ Dot

+ Cross

* Asterisk¡ Circle

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Symbol Name

r Exx

∆ Triangle

Y D_triangle

⊕ Q_circle

◊ Diamond

¨ Square

Octagon

l Circle-filled

s Triangle-filled

u Diamond-filled

n Square-filled

Octagon-filled

NONE (No symbol)

• Colour. Select the desired symbol colour from the list.

• Size. Select the desired symbol size from the list. The sizes

are listed in millimetres and inches and range from 0.5 mm

(0.02”) to 25.0 mm (0.98”).

7. The Text Definition area allows you to define whether to

annotate your symbols with data from specified fields in the

workspace or variables in the extraction file, and if so, how that

data will appear. Data values can be displayed next to each

symbol from up to four workspace fields if you are creating the

profile from a workspace, or from any or all of the six available

variables (northing, easting, elevation, real field, integer field

and string field) if you are creating the profile from an

extraction file. Enter these parameters for each field or variableyou want to use as annotation:

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• Table Name. (This parameter appears only if you are

creating a profile from workspace data.) Select the name of

the table which contains the field you wish to use as

annotation from the list. Fields can be selected from theheader table or from the table that contains the coordinate

field (if different from the header table).

• Field Name. (This parameter appears only if you are

creating a profile from workspace data.) Select the name of

the field you wish to use as annotation from the list.

• Character Size. Select the desired text size from the list. The

sizes are listed in millimetres and inches and range from 1.5

mm (0.06”) to 8.0 mm (0.32”).

Justification. Seloect from the available justification

options to determine the positioning of the text relative to

the symbol.

Figure 20-2: Symbol text justification

• Rotation. Enter the desired orientation angle for your text, in

degrees counter-clockwise from horizontal. For horizontal text,leave this parameter blank.

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g


Figure 20-3: Symbol text orientation

There is no check between the text justification options and the

text orientation angles, so with some combinations it is possible for

one data value to be plotted on top of another.

•Colour Profile. Select a colour profile to use to displayyour text, if desired. For further information on colour

profiles, see Chapter 6: General Data Definitions, Volume I:

Core.

6. Click Save to save your symbol profile. Click Exit to close the

profile definition dialog box.

Preparing Symbol Plots

Once you have defined a symbol plot profile, you can prepare

symbol plots from extraction files or from workspaces.

1. Select either Tools }} Create Plane Plots }} Prepare Symbol Plot from

Extraction File or Tools }} Create Plane Plots }} Prepare Symbol Plot

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from Workspace. The Symbol Profile Selection dialog box will

appear.

2. Select the profile you wish to use. Only profiles created for thetype of symbol plot you are preparing will be listed.

3. Enter a name for the plot file. This file name will automatically

be assigned a GGP extension.

From Extraction Files

If you are preparing a symbol plot from an extraction file:

4. Select the extraction file you wish to use from the dialog box

that appears.

5. The Extraction File Symbol Map Generation statuswindow will appear, displaying the progress of the symbol plot.

When the process is complete, click OK to clear the window from

the screen.

From WorkspacesIf you are preparing a symbol plot from a workspace:

4. The Select Records to Process dialog box will appear. Select

the desired option.

5. The Workspace Symbol Map Generation status window will

appear, displaying the progress of the symbol plot. When theprocess is complete, click OK to close the window.

6. The Legend Creation Parameters dialog box will appear.

Enter the following parameters:

• Plot Legend File Name. Enter a name for the plot legend

file. A .GGP extension will automatically be assigned to thefile name. The default that appears is the name of the

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drillhole display profile. The file will be saved in the

appropriate sub-directory of the current project.

• Legend Window Width. Enter the width you want toassign to your legend window in world coordinates. If you

are using sections, a default appears representing 8 percent

of the section width.

• Legend Position X and Legend Position Y . Enter the X

and Y-axis coordinates to define where you want to position

the legend on the plot. This option is not relevant if you aregoing to bring the legend into its own viewport in QuickPlot.

• Colour of Legend Text. Select one of the sixteen standard

Gemcom colour choices.

7. Click OK.

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Exploration Chapter 21: Drillhole Plane Plots

Chapter 21

Drillhole Plane Plots

In this Chapter

• Introduction

• Trace Smoothing • Projections

• Drillhole Plot Profiles

• Reference Grids

• Preparing Drillhole Plots

Introduction

You can display data from drillhole or traverse workspaces onto

surfaces, plan views, vertical sections or inclined sections.Drillholes and traverses are displayed as trace lines projected onto

the plane, and data from any of the workspace tables can be

displayed in a variety of different formats at the collar location or

along the trace of each drillhole or traverse.

Drillholes on Surfaces

When you create a drillhole plot on a surface, the plot will show the

collar of the drillhole together with a vertical projection of the

drillhole trace onto the surface. No clipping takes place. The trace

will be annotated using the attributes defined in the drillhole plot

profile that you selected. No coordinate grid will be produced, and

the Define Reference Grid Profiles command will be dimmed.

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No coordinate transformation is performed on the point location:

the coordinates in the graphics file are the same as the coordinates

of the points in the workspace.

Drillholes on Plan Views

When you create a drillhole plot for a plan view, the plot will show

the portion of the drillhole trace that passes through the plan view

from the upper elevation limit to the lower elevation limit. All otherparts of the drillhole will be clipped from the map. The trace will be

annotated using the attributes defined in the drillhole plot profile

that you selected. No coordinate grid will be produced, and the

Define Reference Grid Profiles command will be dimmed.

Under normal circumstances, the projection onto the plan view will

be orthogonal. However, you can define a non-orthogonal projectionby entering average plunge and trend angles to modify the

direction of the projection. See “Projections” on page 2589 for more

details.

If your drillholes are vertical or near vertical, the projected trace

on each plan view will be very short. Any annotation (such as

assays, composites or rock types) will be liable to suffer from over-plotting. In addition, the orientation of the text will be based on the

projected azimuth of the drillhole trace and may not be

aesthetically pleasing.

If you want to make a map showing a single symbol for the

drillhole pierce point with the plan view annotated with data from

any of the tables, we suggest that you de-survey the tables that youwant to display and use the symbol mapping features of Gemcom

for Windows to produce the plot files.

No coordinate transformation is performed on the point location so

the coordinates in the graphics file are the same as the coordinates

of the points in the workspace.

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Drillholes on Vertical and Inclined Sections

When you create a drillhole plot for a vertical or inclined section, the

plot will show the portion of the drillhole trace that passes through the

section corridor between the towards and away distances defined for

that section. All other parts of the drillhole will be clipped from the

map. The trace will be annotated using the attributes defined in the

drillhole plot profile that you selected. A coordinate reference grid, a

frame and, optionally, a plan view will be produced.

Under normal circumstances, the projection onto the section will beorthogonal. However, you can define a non-orthogonal projection by

entering average plunge and trend angles to modify the direction of

the projection. See “Projections” on page 2589 for details.

The coordinates of the graphics file are the local section

coordinates. See Chapter 6: General Data Definitions, Volume I:

Core for more information.

Projections

Traces are projected orthogonally (in other words, perpendicular) to

all types of planes. This means that the traces are projectedvertically onto surfaces and plan views, horizontally onto vertical

sections, and perpendicularly onto inclined sections.

You can also adjust the projections onto plan views and vertical and

inclined sections by defining average trend and plunge angles. This

will change the projection from an orthogonal projection to a non-

orthogonal projection. This projection is intended to project the dataalong an average planar surface that trends and plunges in a certain

direction. These angles, defined below, are illustrated in Figure 21-2.

• Trend. The azimuth of the principal direction of the planar

surface.

• Plunge. The angle from the horizontal at which the principaldirection of the planar surface dips.

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The towards and away thicknesses defined for the sections, and the

upper and lower elevation limits for plan views, form a projection

corridor for the planes. Portions of the trace and data that fall

outside the corridor are not included in the plots. The corridor for

Figure 21-1: Orthogonal projection of data

Figure 21-2: Definition of trend and plunge angles

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surfaces has an infinite thickness, so the complete trace and all

data is always included.

Trace Smoothing

You can control whether to "smooth" the trace (i.e., interpret it as a

curve) or leave it as straight line segments between survey points.

This requires that you define a new field in the header table called

TRACE-TYPE with a string data type and a field length of one

character. If the field contains an "A" or "a", the drillhole will

automatically be smoothed with as many segments as required

based on the survey measurements (determined automatically). If

the field contains an "S" or "s", straight line segments will be drawn

between survey measurement points. If the TRACE-TYPE field is not

defined in the database structure, then the default will be to

smooth the trace segments.

Figure 21-3: Trace smoothing

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Drillhole Plot Profiles

You can control all the different features of the drillhole and

traverse plots. These include the following:

• The collar annotation.

• The style of the drillhole trace.

• The method of data display down the trace.

• The reference grid.

• The location plan view.

All of the display attributes that you define for a drillhole plot are

stored in a drillhole plot profile. Each profile is given a name and you

can define as many profiles as you want. When you prepare a drillhole

plot, you select the profile that you want to use from a list or by typing

its name.

Follow this procedure to create a drillhole plot profile:

1. Select Tools }} Create Plane Plots }} Define Drillhole Plot Profiles. The

Drillhole Plot Profile Editor dialog box will appear (see

Figure 21-4 and Figure 21-7).

2. Click Add. Type a name for your profile and click OK.

3. When adding or modifying a drillhole plot profile, you will have

to enter parameters into two main sections of the dialog box,

represented by two tabs across the top:

• Collar. The parameters listed under this tab allow you to

define the data to be used as collar annotations in the

drillhole plot, and how it will appear.

• Trace. The parameters listed under this tab allows you to

define drillhole trace annotations.

Enter the required parameters under both tabs. These

parameters are described in detail in “Collar Annotation”

(page 2593) and “Trace Annotation” (page 2598).

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4. When all parameters are entered to your satisfaction, click Save.Click Exit to close the profile definition dialog box.

For further information on using profile definition dialog boxes, see

Chapter 4: Dialog Boxes, Volume I: Core.

Collar Annotation

You can annotate the collar of each drillhole or traverse on the plot

with information from up to four fields in the header table. In

addition, you can display the projection distance of both the collar

and the toe of the drillhole. You can control the fields, the text size,

the text colour, the position, and the orientation of this annotation.

When the projection distance of the collar and toe is shown, the

distances, which are shown in parentheses, are positive when the

collar or toe is "away" on the far side of the plane, and negative

when the collar or toe is "towards" on the near side of the plane as

you view it.

If the collar or toe is outside of the projection corridor (in otherwords, the distances of each side of the plane defined by their

Figure 21-4: Drillhole Plot Profile Editor (Collar tab)

Page 2594


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thicknesses) the annotation is positioned at the entry and exit

points of the hole and the corridor.

To define collar annotations, ensure that the Collar tab (see Figure21-4) in the Drillhole Plot Profile Editor dialog box is selected

by clickingit if necessary. Enter the parameters outlined in the

following sections.

Drillhole Trace Line

Only that portion of the drillhole trace that falls within the projection

corridor defined by the plane thickness will be displayed. The position

and orientation of the line plotted for the drillhole trace are determined

from the survey information for the drillhole or traverse. The line is

smoothed using a complex three-dimensional smoothing algorithm

that honours the survey data absolutely. You can control the amount of

smoothing (from no smoothing to extensive smoothing) using a fieldcalled TRACE-TYPE. (See “Trace Smoothing” on page 2591.)

Tickmarks appear at FROM and TO or DISTANCE values along the

trace. As well, special symbols are used to annotate the collar and

toe (see following section). If you prefer, you can choose to suppress

the display of any of the following:

• the trace line itself

• the tickmarks

• the collar symbol

• the pierce point symbol (through the plane)

The following parameters define how the drillhole trace line will

appear.

• Plot Hole Trace. Select this option if you want a trace of the

drillhole to appear on the plot.

• Colour of Trace. Select the colour of the trace from the sixteen

standard Gemcom screen colours. The colour of the trace on the

plotted output will depend on the type of plotter that you have and

the pen mapping that you have defined. See the QuickPlot onlinehelp for more information on plotter pen colours and pen mapping.

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• Trend Correction Angle. If you want to change the drillhole

projection from an orthogonal projection to a non-orthogonal

projection, enter a trend correction angle This is the azimuth of

the principal direction of the planar surface. (See Figure 21-2.)

• Plunge Correction Angle. If you want to change the drillhole

projection from an orthogonal to a non-orthogonal projection,

enter a plunge angle. This is the angle from the horizontal at

which the principal direction of the planar surface dips. (See

Figure 21-2.)

Trace Symbol

There are five special symbols that are used to annotate the collar,

toe and pierce points.

Symbol Meaning

This symbol indicates the position of the collar of the

hole when it is inside the projection distances.

This symbol indicates the position of the toe of the

hole when in is inside the projection distances.

This symbol indicates the pierce point where the

drillhole trace passes through the plane.


drillhole trace enters the projection corridor, andwhen the collar of the hole is outside the projection

distances.


drillhole trace exits the projection corridor, and when

the toe of the hole is outside the projection distances.

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The following parameters define how these symbols are displayed.

• Plot Collar Symbol. Select this option if you want the symbolsto appear on the plot.

• Colour of Collar Symbol. Select the colour of the trace

symbols from the sixteen standard screen colours.

• Collar Symbol Size. Select a size for the symbol from the list.

Symbol sizes are defined in both millimetres and inches, and

appear on plots at the sizes defined. You can choose one of six

different sizes ranging from 1.5 mm (0.06”) to 8.0 mm (0.32”).

• Plot Pierce Point Symbol. Select this option if you want to

plot pierce point symbols where the drillhole trace pierces the

projection corridor.

Annotation Text

The following parameters allow you to control which fields are used

to create the collar annotation as well as the size, colour, position

and orientation of the annotation.

You can select up to four fields from the Header table to use ascollar annotation. For each of the fields, enter the following

parameters:

• Field Name. Select the name of the field in the Header table

you wish to use as collar annotation.

• Subfield. If you chose a coordinate field type in Field Name,above, select the desired coordinate (E, N or Z).

• Character Size. Data from each field selected can be plotted at

a unique size per field. Text sizes are defined in both

millimetres and inches, and appear on plots at the sizes defined.

You can choose one of six different text sizes ranging from 1.5

mm (0.06”) to 8.0 mm (0.32”).

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• Colour. Select the desired text colour from the list.

• Position. The annotation can be located at either the collar

(the top) or the toe (the bottom) of the drillhole or traverse. The

fields used for the annotation can also be specified individually;

thus, annotation can appear at both the top and bottom of a

drillhole.

There are also several parameters that apply to all text annotation

from all chosen fields.

• Match Field Contents to Plane Name. Click the checkbox toselect records on a plane by plane basis by matching the

contents of a field in the header table against the plane names.

If the field contents match the plane that the plot is being

prepared for, the record will be used. If the field contents do not

match the plane name, the record will not be used. This option

is useful if you are creating drillhole plots for a set of planes,

not all of which will require the data from all records in theworkspace.

If you select this option, you will have to enter the following

parameter:

◊ Use Field Name. Select the field which contains the data

to which you want to compare the plane name.

Figure 21-5: Drillhole collar annotation

Page 2598


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• Plot Projection Distance. Select this option to plot the

projection distance as part of the collar annotation.

• Orientation. Select one of the three options illustrated in

Figure 21-5 to determine the positioning of the annotationrelative to the drillhole.

If you have selected more than one field, then the position of the

various fields will be adjusted relative to the collar position, as

illustrated in Figure 21-6.

Trace Annotation

You can annotate each side of the drillhole trace with data from any of

the secondary tables in the workspace, provided that the tables

selected have data in either interval (FROM-TO) format or distance

format to define the location of the information along the trace. Youcan display data from up to 16 fields in multiple tables on both the

right and the left side of the trace. The display method for each field

can be independent of the others.

To define trace annotations, ensure that the Trace tab in the

Drillhole Plot Profile Editor dialog box is selected by clickingit if

necessary.

Figure 21-6: Annotation with multiple fields

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To add a trace annotation to the profile, click the Add button at theright-hand side of the dialog box. To edit an existing trace

annotation, select the display option cell for that annotation and

click the Edit button. In both cases, the Trace Definition Editor

dialog box will appear. Enter the following parameters:

• Display Option. Select the desired display option from the

following eight choices:

◊ Numerical or text data (“Fields”)

◊ Normal histograms

◊ Logarithmic histograms

◊ Normal line graphs

◊ Logarithmic line graphs

◊ Colour bars◊ Distances along the trace

Figure 21-7: Drillhole Plot Profile Editor (Trace tab)

and sample Trace Definition Editor

Page 2600

◊ P tt fill


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◊ Pattern fill

These display options are discussed in detail in the sections

below.

• Table Name. Enter the name of the table where the field used

to define the trace annotation is located. (This parameter is not

relevant if you selected Distances along the trace as the

Display Option.)

• Side. Select whether you want the trace annotation to be

plotted to the right or the left of the drillhole trace. Note that

the right side of the trace is the side that falls on your right

when you are standing at the collar looking down the hole.

• Offset. Position the field relative to the trace by entering an

offset distance, which will define how far to the left or right of

the trace the annotation will be plotted.

You will also need to enter additional parameters determined by

your choice of display option. These parameters are discussed in

detail in the sections below.

Numerical or Text Values (“Fields”)

You can display the data from up to four fields from any single

eligible secondary table alongside the hole trace. Each field is

separated by spaces, and the fields are all aligned along the

character closest to the space (the rightmost character if the

annotation is to the left of the trace, and the leftmost character if

the annotation is to the right of the trace).

When you select the Fields display option in the Trace Definition

Editor, a number of parameters will appear. The first parameter

defines text size:

• Character Size (Scaleable). Define the text size by entering

the character height in world coordinate (scaleable) units.

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When the length of the FROM-TO or DISTANCEinterval is too short to

allow clear plotting of the field values without interference from

neighbouring values, you can either plot the values away from the

trace line, or you can suppress the values for the short interval

altogether.

• Suppress Intervals Shorter than. Enter a suppression

length. When the interval is shorter than the suppression

length, the annotation is suppressed.

• Offset Annotations with Intervals shorter than. Enter an

interval length greater than the suppression length. Intervalsshorter than this length but greater than the suppression length

will be plotted at normal size but will be offset from the trace of the

hole. The offset increases by the length of the annotation for every

three successive intervals and then reverts to zero.

When the interval is longer than the length of interval you define

for the either of these parameters, the annotation is plotted atnormal size in the normal position.

Drillhole

trace

Tickmarks at

"FROM" and

"TO" or

"DISTANCE"

values

Decimal places

controlled by

workspacedefinition

Second field (optional)

First field

Third field (optional)

Figure 21-8: Trace annotation with text (fields)

Page 2602

Drillhole


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Drillhole

trace

Successive

intervals

shorter than

suppressionlength

No annotation of

these intervals

Figure 21-9: Suppressed text annotation

Drillhole

trace

Successive

intervals

shorter than

minimumlength

Annotation of

these intervalsis offset

Figure 21-10: Offset text annotation

Drillhole

trace

Length of

interval

Character height

defined in same units as

used in workspace (e.g.,

if interval is 5 feetlong, character height

should be about 4)

Figure 21-11: Normal text annotation

Page 2603

There are also four parameters to be entered for each of the fields


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There are also four parameters to be entered for each of the fields

that you wish to use to annotate the trace. These are as follows:

•Field Name. Select the name of the field you wish to use as thetrace annotation.

• Sub. If you selected a coordinate field type in Field name,

above, select the coordinate you wish to use (X, Y or Z).

• Colour Profile. Select a colour profile to determine the colour

of the field according to its data values. See Chapter 6: General

Data Definitions, Volume I: Core for more information on colour

profiles.

• Display Mask. This parameter determines the width of each

field in the trace annotation and the number of decimal places

to be shown, and allows the insertion of commas to make

reading of large numbers easier. Here are some examples,

assuming the number to be displayed is 123456.789:

Mask Result

nnnnnnnn.n 123456.8

nnn,nnn.nnnn 123,456.7890

nnnnnnn 123456

Normal Histograms

You can select one field that has a numeric data type from any

eligible secondary table, and display the field value as a histogram

bar down the side of the drillhole trace.

When you select the Histogram display option in the Trace

Definition Editor, a number of parameters will appear.

• Field Name. Select the field which contains the values youwish to use to plot the histogram bar.

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• Scale Factor. Define a scale factor. The length of the

histogram bar is determined by multiplying the data value in

the field by this scale factor. The resultant value is used as a

scaleable distance that will control the length of the bar. For

example, if the database units are feet, and the scale of the plotis to be 1 inch:50 feet, a value of 0.35 % (for a copper assay) with

a scale factor of 50 will result in a value of 17.5, which will

result in the bar being plotted 0.35 inches long. If the scale of

the plot is changed to 1 inch:100 feet, the length of the plotted

bar will halve to 0.175 inches.

• Lower Bound and Upper Bound. The values used to plot thehistogram bar are obtained from the selected field between

upper and lower bounds. If the value in the field is greater than

the upper bound, the value is still used but is set to the upper

bound that you defined. If the value is lower than the lower

bound, the value is not used.

• Scale Bar. You can plot a scale bar for each drillhole thatshows the relationship between the length of the histogram bar

Drillhole

trace

Drillhole

intervalHistogram bar

Optional

scale bar

Upper bound

of data limits

Bar length = field value * scale factor

Figure 21-12: Trace annotation with histograms

Page 2605

to the values from the field. Select one of the following four


43/61


options:

◊

Both. The scale bar will be plotted at both the collar and thetoe.

◊ Collar. The scale bar will be plotted at the collar of the hole.

◊ Toe. The scale bar will be plotted at the toe of the hole.

◊ None. No scale bar will be plotted.

• Colour Profile. Select a colour profile to use to define the

colour of the bar.

• Char Size. Enter a character height in world coordinate

(scaleable) units to define the size of the text of the trace

annotation.

• Num Intervals. If you chose to display one or both scale bars,

enter the desired number of intervals between the upper and

lower bounds of the data limits. This will determine the number

of tickmarks and associated numbers that will be displayed

along the scale bar(s).

• Annotate Peaks. Enable this option if you want to annotatethe histogram bar with values that are greater than the upper

bound that you defined.

•

Length of

histogram

bar is

clipped to

upper bound

Upper bound

of data limits

Annotation of

field values

greater than

data limits

Page 2606

3 log cycles


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Figure 21-13: Annotation of histogram peaks

Log Histograms

You can select one field that has a numeric data type from any eligible

secondary table and display the field value as a logarithmically scaled

histogram bar down the side of the drillhole trace.

When you select the Log Histogram display option in the Trace

Definition Editor, a number of parameters will appear. The

following parameters are identical to those for normal histogram

annotation. See “Normal lHistograms” on page 2603 for details.

• Field Name.

• Colour Profile.

• Lower Bound. Note that the lower bound must be greater

than zero. You cannot take logarithms of values that are lessthan or equal to zero.

Drillhole

trace

Drillhole

interval

Histogram bar

Optional

scale bar

Upper limit

of log cycles

Length of bars

determined from field

value and log scaling

Figure 21-14: Annotation with log histogram

Page 2607

• Upper Bound.


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• Annotate Peaks.

• Scale Bar.

• Char Size.

The length of the histogram bar is determined by multiplying the

value in the field by a scale factor that is calculated from the

number of log cycles that you select, the upper cycle limit, and the

length that you define for the uppermost log cycle. The resultantvalue is used as a scaleable distance that will control the length of

the bar. For example, if you select four log cycles with an upper

limit of 100, and define the length of the upper cycle to be 50

scaleable units, you will get a histogram scaled as follows:

Field Values Ground Units

0.0 - 0.1

0.1 - 1.0

1.0 - 10.0

10.0 - 100.0

0.0 - 12.5

12.5 - 25.0

25.0 - 37.5

37.5 - 50.0

Enter the following parameters to determine the scale factor:

• Log Cycles. Select the number of log cycles to use to determine

the scale factor. You can choose from one to six cycles.

• Upper Length. Enter a length to be used for the uppermost log

cycle.

• Upper Limit. Enter an upper cycle limit.

Normal Line Graphs

You can select one field that has a numeric data type from any

eligible secondary table and display the values from the field as aline graph down the side of the drillhole trace. When you select the

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Line Graph display option in the Trace Definition Editor, a

number of parameters will appear.

• Field Name. Select the field which contains the values you

wish to use to plot the histogram bar.

• Scale Factor. Define a scale factor. The position of the line

graph is determined by multiplying the data value in the field

by this scale factor. The resultant value is used as a scaleable

distance, which is the distance that the line is plotted from the

trace. For example, if the database units are feet, and the scale

of the plot is to be 1 inch:50 feet, a value of 0.35 % (for a copper

assay) with a scale factor of 50 will result in a value of 17.5,

which will result in the line being plotted 0.35 inches from the

trace. If the scale of the plot is changed to 1 inch:100 feet, the

distance to the plotted line will halve to 0.175 inches.

• Lower Bound and Upper Bound. The values used to plot the

histogram bar are obtained from the selected field between

upper and lower bounds. If the value in the field is greater than

Position of points on line

determined from field

value times scale factor

Upper bound

of data limits

Optional

scale bar

Line graph

Drillhole

trace

Drillhole

interval

(tickmarks

not plotted)

Figure 21-15: Trace annotation with line graphs

Page 2609

the upper bound, the value is still used but is set to the upper

bound that you defined If the value is lower than the lower


47/61


bound that you defined. If the value is lower than the lower

bound, the value is not used.

• Scale Bar. You can plot a scale bar for each drillhole that

shows the relationship between the line graph and the values

from the field. Select one of the following four options:

◊ Both. The scale bar will be plotted at the collar and the toe.

◊ Collar. The scale bar will be plotted at the collar of the hole.

◊ Toe. The scale bar will be plotted at the toe of the hole.

◊ None. No scale bar will be plotted.

• Annotate Peaks. Enable this option to annotate any peaks

along line graph that have values greater than the upper

bound.

•

Position

of line is

adjusted

to upper

bound

Upper bound

of data limits

Annotation of

field values

greater than

data limits

Figure 21-16: Annotation of line graph peaks

• Line Colour. Select a colour for the line graph.

• Char Size. Enter a character height in world coordinate

(scaleable) units to define the size of the trace annotation text.

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3 l l


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• Num Intervals. If you chose to display one or both scale bars,

enter the desired number of intervals between the upper and

lower bounds of the data limits. This will determine the number

of tickmarks and associated numbers that will be displayed

along the scale bar(s).

Log Line Graphs

You can select one numeric-type field from any eligible secondary

table and display its value as a logarithmically scaled line graph

down the side of the drillhole trace.

When you select the Log Line Graph display option in the Trace

Definition Editor, a number of parameters will appear. The

Drillhole

interval

(tickmarks

not plotted)

Position of line

determined from fieldvalue and log scaling

Line graph

Drillhole

trace

Optional

scale

bar

3 log cycles

Upper limit

of log cycles

Figure 21-17: Trace annotation with log line graphs

Page 2611

following parameters are identical to those for normal line graph

annotation. See “Normal Line Graphs”on page 2607 for details.


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annotation. See Normal Line Graphs on page 2607 for details.

•Field Name.

• Line Colour.

• Lower Bound. Note that the lower bound must be greater

than zero. You cannot take logarithms of values that are less

than or equal to zero.

• Upper Bound.

• Annotate Peaks.

• Scale Bar.

• Char Size.

The distance of the line from the trace is determined by multiplying

the field value by a scale factor that is calculated from the number

of log cycles that you select, the upper cycle limit, and the length

that you define for the uppermost log cycle. The resultant value is

used as a scaleable distance that will control the position of the

line. For example, if you select four log cycles with an upper limit of

100, and define the length of the upper cycle to be 50 scaleable

units, you will get a line graph scaled as follows:

Field Values Ground Units

0.0 - 0.1

0.1 - 1.0

1.0 - 10.010.0 - 100.0

0.0 - 12.5

12.5 - 25.0

25.0 - 37.537.5 - 50.0

Enter the following parameters to determine the scale factor:

• Log Cycles. Select the number of log cycles to use to determine

the scale factor. You can choose from one to six cycles.

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• Upper Length. Enter a length to be used for the uppermost log

cycle.

• Upper Limit. Enter an upper cycle limit.

Colour Bars

You can select one field with a numeric or text data type from any

secondary table and use it to enhance the display of the drillhole

trace with colours.

When you select the Colour Bar display option in the Trace

Definition Editor, a number of parameters will appear.

• Field Name. Select the field you wish to use for the trace

annotation.

Width of bar defined by user

Drillholeinterval

Colour fill determined byfield values and colour profile

Drillholetrace

Figure 21-18: Trace annotation with colour bars

Page 2613

• Colour Profile. Select a colour profile to define the bar colours.

The colours selected will depend on the data values in the field


51/61


p

and the ranges as defined in the colour profile. See Chapter 6:

General Data Definitions, Volume I: Core for more information.

• Bar width. You can control the thickness of the colour bar by

defining a width in scaleable units (the same way as you define

scaleable character sizes) and by optionally filling the colour

bar. The density of the fill is determined by the number of fill

lines and the width of the colour bar.

• Num Lines. Enter the number of fill lines to use.

• Char Size. If you enabled Plot Colour Field Value (below), you

can define the text size by entering the character height in

world coordinate (scaleable) units.

• Suppress Intervals Shorter Than. Enter the length of the

shortest interval for which you would want annotationdisplayed. Any intervals shorter than this length will not be

annotated.

• Offset Annotations with Intervals Shorter Than. Enter an

interval length greater than the suppression length. Intervals

shorter than this length but greater than the suppression

length will be plotted at normal size but will be offset from thetrace of the hole. The offset increases by the length of the

annotation for every three successive intervals and then reverts

to zero.

• Plot Colour Field Value. Enable this option to annotate the

colour bar with the actual values from the fields represented by

specific colours on the bar.

• Colour Fill. Enable this option to fill each section along the colour

bar with the appropriate colour according to the colour profile.

• Plot Interval Tick Marks. Enable this option to plot interval

tick marks along the colour bar.

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Distances

You can place tick marks at regular intervals along the drillhole trace

and annotate them with the distance from the collar. When you select

the Distance display option in the Trace Definition Editor, the

following parameters will appear.

• Tick Interval. Enter the desired interval between tickmarks

along the trace.

• Colour. Select a colour for the annotation.

• Char Size. Define the text size by entering the character

height in world coordinate (scaleable) units.

• Decimals. Select the number of decimal places to be used(between 0 and 9).

Drillhole

trace

Annotation showingdistances along drillholetrace from collar

2 5 .0

5 0 .0

7 5 .0

10 0 .0

12 5 .0

Figure 21-19: Trace annotation with downhole distances

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Pattern Fill

You can select one field with a numeric or text data type from anysecondary table and use it to enhance the display of the drillhole trace

with patterns. When you select the Pattern Fill display option in the

Trace Definition Editor, the following parameters will appear.

• Field Name. Select the field you wish to use for the annotation.

• Trace width. You can control the thickness of the pattern bar

by defining a width in scaleable units (the same way you define

scaleable character sizes).

• Colour Profile. You define the colour of the bar using a colour

profile. The colours selected will depend on the data values in

the field and the ranges defined in a colour profile. See

Chapter 6: General Data Definitions, Volume I: Core for more

information about colour profiles.

Pattern fill determined by fieldvalues and pattern profile

Width of bar defined by user

Drillholetrace

Drillholeinterval

Figure 21-20: Trace annotation with pattern fill

Page 2616

• Pattern Profile. You can define the pattern of the bar using a

polygon hatching profile. The patterns selected will depend on the

d t l i th fi ld d th d fi d i th h t hi


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data values in the field and the ranges as defined in the hatching

profile. For more information on polygon hatch patterns, seeChapter 6: General Data Definitions, Volume I: Core.

Reference Grids

Vertical and inclined sections can be annotated with a frame and a

reference grid showing the intersection of the vertical or inclined

section with the coordinate system for the project. You can define the

spacing of the northing, easting and elevation lines, the spacing of

reference tick marks along the section, the colour and size of the

annotation, and the line types and colours by creating a Reference Grid

Profile.

Plan view grid annotation is provided by the coordinate grid options

in QuickPlot. See the QuickPlot online help for details.

Reference Grids on Inclined Sections

To create a reference grid profile to be used with inclined sections,

follow this procedure:

1. Select an inclined section as the active plane (see page 2570 for

procedure).

2. Choose Tools }} Create Plane Plots }} Define Reference Grid Profiles. The

Inclined Section Reference Grid Editor dialog box will appear.

3. Click Add and enter a name for your grid profile. Click OK.

4. Enter the following parameters to determine the appearance of

the reference grid:

• Grid Type. Select one of the following three options:

◊ Full. This option displays all grid lines on the completedplot.

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◊ Partial. This option displays only the grid line

intersections on the completed plot.

◊ None. This option does not display any portion of the

grid lines on the completed plot.

Full Grid Partial Grid

Figure 21-22: Full and partial grids

• Frame. You can display a frame around the four edges of

the plane. Select a colour for this frame from among the

standard Gemcom screen colours.

Figure 21-21: Inclined Section Reference Grid Editor dialog box

Page 2618

• Distance Tickmark Spacing . You can display small tick

marks along the bottom and top edges of the plane. These

tick marks are useful for establishing plan control when


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tick marks are useful for establishing plan control when

digitizing in the plane's local coordinate system. Enter adistance to define how far from the left edge of the plane the

tickmarks are placed in the measurement units of your

project (i.e., either feet or metres).

• Length of Tickmark. Define the length of the tickmarks in

the measurement units of your project (i.e., feet or metres).

• Character Size. The size of reference grid text annotations

are defined in both millimetres and inches and appear on

plots at the sizes defined. You can choose from six different

text sizes ranging from 1.5 mm (0.06”) to 8.0 mm (0.32”).

5. You can display the intersection of the northing, easting and

elevation coordinates. Enter the following parameters for each

of the three types of coordinate lines:

• Spacing . Enter the distance between the lines.

• Line Type. Select the desired line type from a list of the

defined line types.

• Colour. Selected the desired colour from among the sixteenstandard Gemcom screen colours.

6. Click Save to save your parameters under the profile name you

entered in step 3. Click Exit to close the profile definition dialog

box.

Reference Grids on Vertical Sections

To create a reference grid profile to be used with vertical sections,

follow this procedure:

1. Select a vertical section as the active plane (see page 2570 for

procedure).

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2. Choose Tools }} Create Plane Plots }} Define Reference Grid Profiles. The

Vertical Section Reference Grid Editor dialog box will appear.

3. Click Add and enter a name for your grid profile. Click OK.

4. Most of the parameters required are the same as those requiredfor a reference grid for inclined sections. Enter these

parameters as outlined in steps 4 and 5 in the section above.

5. When preparing reference grids for vertical sections, you can

add a small plan view either above or below the plane plot. This

plan view shows the location of the plane line, the towards and

away projection distances, and the locations and traces of thedrillholes shown on the plane.

The position of the plane is shown by the solid line running along

the centre of the plan view. The towards thickness is shown

between the plane line and the dotted line running along the

bottom edge of the plan. The away thickness is shown between the

plane line and the dotted line at the top edge of the plan.

Figure 21-23: Vertical Section Reference Grid Editor

dialog box

Page 2620

Plan View

Section line


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All text and drillhole trace attributes are the same as for the

drillhole plane itself. Enter the following parameters to

determine how the plan view will be plotted:

• Plan View. Select one of the following three options todetermine where on the plot the plan view will be placed:

◊ Top. Select this option to place the plan view above the

plane plot.

◊ Bottom. Select this option to place the plan view below

the plane plot.

◊ None. Select this option if you do not want to plot a plan

view on your vertical plane plot.

• Width Outside Projection. You can control the distance of

the plan view from the top edge or bottom edge of the plane

by defining a distance in the units of your project.

Distance between plan

view and section

Distance between border

and section corridor

Border around

plan view

Border around

section view

"Towards" thickness

"Away" thickness

Section View

Figure 21-24: Plane plot plan view

Page 2621

• Spacing Between Plan View and Section. You can also

define the space between the frame of the plan and the

plane corridor by defining a distance in world coordinate


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p y g

(scaleable) units.

• Plot Topo Data in Plan View. You can also show contour

lines from the project status map. Only the portions of the

data that fall within the towards and away distances are

included in the plot. Select Yes or No.

Preparing Drillhole Plots

Once you have defined a drillhole plot profile and a grid profile, you

can prepare drillhole plots from your workspace. Note that the

active workspace must be a drillhole or traverse workspace.

Follow this procedure to prepare a drillhole plot of a plane or set of

planes:

1. Select the desired plane type and plane or set of planes (see

page 2570 for further information).

2. Choose Tools }} Create Plane Plots }} Prepare Drillhole Plot from

Workspace.

3. If you selected vertical or inclined sections in step 1, the

Reference Grid Profile list will appear. Select the grid

display profile you wish to use and click OK.

4. The Section Display Profile list will appear. Select the

desired drillhole plane plot display profile and click OK.

5. In the file creation dialog box that appears, enter the name of

the GGP file that you wish to create. Do not type the GGP suffix:

it will be added to your file name automatically. The default file

name SECTION is entered for you, but can be easily overwritten.

If you are creating drillhole plots for a set of planes, each plot will

be given the same name, and will be saved in the plane’s unique


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Page 2623

You can now view your drillhole plane plot(s) on-screen, or print them

by using QuickPlot. See “Viewing Prepared Data” on page 2571.


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