The Block Menu Chapter 11 Gemcom

8/11/2019 The Block Menu Chapter 11 Gemcom

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Modelling Chapter 11: The Block Menu

Chapter 11

The Block Menu

In This Chapter

Introduction

Data Create

Interpolate

Edit

Selection

Display

Utils

Introduction

Using commands on the Blockmenu, you can create block model

projects, build block models of various types, and display and update

block model and surface elevation grid (SEG) data.

Seven submenus deal with these operations:

Data. Defines which block model project is to be loaded. Imports

and exports project data.

Create. Defines the location and geometry of a project. Creates

and initializes project folders and block models.

Interpolate. Assigns grade values to blocks from sample data

using any of several kriging or inverse distance processes.


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Section IV: Modelling Menus Gemcom for Windows

Edit. Updates block models and SEGs with solid/surface, polygon or

point data attributes. Edits individual blocks. Mathematically

manipulates block models. Models economic parameters.

Selection. Defines sets of blocks to be activated for operations and

for viewing based on explicit selection, location relative to data

objects, or values contained.

Display. Defines how blocks and SEGs are displayed. Sets the

active view plane based on rows, columns or levels of a block

model. Assigns display types and colour profiles.

Utils. Interfaces with Whittle pit optimization software. Converts

a SEGinto a surface TIN and vice versa.

In order to use many of the commands on the Blockmenu, you must

first create or import block model and/or SEGdata Also, you must

define colour profiles in order to display your data. See Volume I: Core

for information on creating colour profiles.

Gemcom for Windows is available in several editions. Licensees with

advanced editions (such asResource Evaluation) will have access to

the full complement of Blockmenu commands; other users will see a

subset of the commands described in this chapter.

Project View Area

Block modelling operations make use of the folder tree found on the

Objectstab of the Project View area. An introduction to the Project

View area can be found in Volume 1: Core, Chapter 3: Getting Started.

The folder tree provides a map of your project structure. You must

highlight a project, folder, or model name to access many Blockmenu

commands.

In the folder tree, icons indicating the various block model types

appear as seen in Figure 11-1:


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Folder command Corresponds to

New Block Model Block }}Create }}Models }}Create Block Model

Delete Block }}Create }}Folders }}Delete Block Folder

Import Block }}Data }}Import Block Model

Export Block }}Data }}Export Block Model

Properties Block }}Create }}Folders }}Edit Block Folder

Block Model Commands

Project View Context Menu commands available when right-clicking

on any block model icon (except an elevation model icon) appear in

the table below:

Block model

command

Corresponds to

Initialize Block }}Create }}Models }}Initialize/Re-Initialize

Block Model

Delete Block }}Create }}Models }}Delete Block Model

Display (Available only when model is currently hidden.)

Hide (Available only when model is currently displayed.)


Update from Points Block }}Edit }}Update Block Model from Points

(Available only when points are loaded.)

Update from Polygons Block }}Edit }}Update Block Model from

Polygon

(Available only when polygons are loaded.)

Update from Solids Block }}Edit }}Update Block Model from Solid

(Available only when solids are loaded.)

Properties Block }}Create }}Models }}Edit Block Model

Display

Choose this command to display a block model. This command does

not directly correspond to any Blockmenu command.


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1. Highlight a block model in the Project View area.

2. Choose Displayon the Project View Context Menu. A check mark

(

)will appear next to the block model icon, indicating it has beenselected for display.

3. If no display profile is associated with the model,you will be asked

if you wish to select a profile. If so, chooseYes, then follow the

instructions underEdit Block Modelin theModels subsection of

the Createsection of this chapter.

4. If no selection is active, you will be asked if you wish to define a

selection. If so, chooseYes, then follow the instructions under

Define Selectionin the Selectionsection of this chapter.

You may repeat this process for as many block models as desired.

However, if you choose to display block model data as cubes, only the

first block model chosen using the cube display option will be visible in

3Dmode.

Hide

Choose this command to terminate display of an individual block

model. This command does not directly correspond to any Blockmenu

command.

Elevation Model Commands

Project View Context Menu commands available when right-clicking

on an elevation model icon appear in the table below:


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Elevation model

command

Corresponds to

Delete Block }}Create }}Models }}Delete Block Model

Display Block }}Display }}Select SEG Data for

Display

(Available only when model is currently hidden.)

Hide (Available only when model is currentlydisplayed.)

Select Grids to Display Block}}Display

}}Select SEG Data forDisplay

(Available only when model is currentlydisplayed.)


Edit Block }}Edit }}SEG Description Editor

Properties Block }}Create }}Models }}Edit Block Model

Block Express Menu

When the cursor rests on a block in the graphical work area, right-

clicking the mouse will bring up the Block Express Menu. As in the

standard Express Menu, the list of last commands chosen appears, butthe Propertiescommand does not. However, additional commands

which refer to the individual block selected with the cursor appear.

These are described below.

Edit

This command is equivalent to Block }}Edit }}Block Editor, invoking

the Block Editor dialog box for editing the selected block.

Create Section

Choosing this command brings up a submenu containing commands

which instantly allow you to view a vertical section or planview


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passing through the selected block. These commands essentially

correspond to selected commands as listed in the table below:

Command Corresponds to

Plan View Block }}Display }}Set View Corridor Along Level

Vertical North Block }}Display }}Set View Corridor Along

Column

Vertical South Block }}Display }}Set View Corridor Along

Column

Vertical East Block }}Display }}Set View Corridor Along Row

Vertical West. Block }}Display }}Set View Corridor Along Row

If the Block }}Display }}Select Row/Column/Level from Viewor

Select SEG Row/Column from View commands are toggled On,

choosing any Create Section command will define a new selection,

replacing your current selection set.

Block Properties

Choose this command to display the Block Properties dialog box,which lists data values for the selected block. The dialog box contains

a Summarytab, plus a tab specific to each folder in the project.

The Geometryframe in the upper part of each tab contains

information describing the selected block's location and size.

The Totalsframe below contains four columns: the data Item, the

Valuein the selected block, the amount of Productin the selected

block, and the Unitsapplicable to the product. Numbers and items

appearing in redare incompletely defined. Quantities accompanied

by an asterisk(*) are implied or mapped, rather than explicitly

defined. Quantities for which there is noinformation available are

reported as "undefined."

If you wish to edit the values in the selected block, choose the Edit

command button to bring up the Block Editor dialog box.

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After viewing the data, chooseClose.

Summary tab

Choose the Summarytab to see the total volume, tonnage and

amount of each grade element contained in the block. The percent

Block Properties dialog boxSummary tab


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value should be 100%. If it is not, check the folder tabs for undefined

quantities. As shown in the following table, if you have Nfolders, N-1

must contain a percent model for the total to be defined. (Gemcom will

calculate the remaining percentage by subtracting the summedpercentages from 100%.)

Tab Percent model (example

1)

Percent model (example

2)

Standard 50% 50%

Folder 2 undefined 40%Folder 3 undefined undefined

Summary undefined 100%

Folder tabs

The folder tabs bear the name of the folders in the block model project.

Choose a folder tab to see the rock type, density, percent, economic,

and grade values contained in the block models in that folder.

Block Properties dialog boxFolder tab (Totals frame only)


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Common Block Modelling Dialog Box Types

Several types of dialog boxes are frequently encountered when using

Blockmenu commands. Many are described in Volume I: Core,Chapter 4: Dialog Boxes, but a few which have unique applications to

block modelling are described below.

Browse Dialog Box

You will encounter this dialog box whenever you choose a Browsecommand button, for example when importing or exporting a block

model. See the instructions for File Name dialog boxes in Volume I:

Core, Chapter 4: Dialog Boxes.

Browse dialog box

Choose Model Dialog Box

You will encounter this dialog box whenever you have the opportunity

to load a block model.


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Choose Model dialog box

1. In the folder tree, click any box containing a plus sign [+]to reveal

the contents of the associated project or folder.

2. Highlight the name of one block model you wish to load. Blockmodels are indicated by the generic block icon .

3. Choose OK.

Model Grids and Command Buttons

In several dialog boxes, you will be asked to enter information into a

grid text box to create a model of your data. In generally, these grids

will contain an identifying variable in the leftmost column and one or

more data parameters in the remaining columns. Several command

buttons will be available to help you fill in the necessary rows in these

grids. These buttons will generally include Add, Insert, Delete, Edit, and

occasionally others, such as Sort.


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Typical model grid entry box with command buttons

Add a Row

1. Choose Add.

2. In any dialog box which appears, enter the necessary data for the

new row, which will follow the last row in the list and choose OK.

3. Choose OK or Finish to insert the row into the model.

Insert a Row

1. Highlight an entry in the leftmost column.

2. Choose Insert.


new row (which will precede the highlighted row in the list) and

choose OK.

4. Choose OK or Finish to insert the row into the model.


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You may highlight multiple rows, but only one new row will be

inserted, preceding the uppermost highlighted row in the list.

Delete Rows

1. Highlight one or more entries in the leftmost column.

2. Choose Delete. The selected rows will be deleted from the list.

3. Choose OK or Finish to delete the rows from the model.

Edit a Row

1. Highlight an entry in the leftmost column and choose Edit

or

Double-click on the desired leftmost column entry.


row, and choose OK.

3. Choose OK to apply the edits to the model.

You may highlight multiple rows, but only the uppermost highlightedrow in the list will be edited.

Sort Rows

1. Choose Sort. The leftmost column entries will remain in ascending

numerical order downward. The remaining row data will bereordered such that the entries in the second leftmost column also

appear in ascending numerical order downward.

2. Choose OK or Finish to apply the sort to the model.


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Data

Choosing Block }}Databrings up a submenu of commands that let you

select the current project, and copy block model data into and out ofthe project.

Reassign Block Model Project

Choose this command to select the project containing the block modelor surface elevation grid data that you want to use.

1. Choose Block }}Data }}Reassign Block Model Project.

Or,

Highlight a project in the Project View area and choose Reassign

Projecton the Project View Context Menu.

2. In the Select Project dialog box, highlight the drive on which the

desired block model project is stored.

3. A list of valid projects stored on the highlighted drive will appear.

Highlight the desired block model project and choose OK.

Import Block Model

Choose this command to import block model data from a text file or an

extraction file.

1. Highlight a folder in the Project View area.

2. Choose Block }}Data }}Import Block Model.

Or,

Choose Importon the Project View Context Menu.


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Block Model Import: General dialog box

3. In the Block Model Import: General dialog box, enter the following

data:

Import type. Choose either Textfileor .MEXfile.

If you are importing a text file, enter the following data:

Block by. Choose Indices, if the import file includes indices,

Coordinatesif you wish blocks to be assigned based oncoordinates included in the import file, or Record Numbersifyou wish blocks to be assigned sequentially to records, inthe sequence illustrated (for Mrows and Ncolumns) in thetable below:


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Record Row Column Level

1 1 1 1

2 2 1 1M M 1 1

M+1 1 2 1

MxN M N 1

MxN+1 1 1 2

Base index.If you are blocking by indices, choose the baseindex used in the import file, 0or 1. Gemcom applicationsuse 1 as the lowest index number, but other softwaresystems may use 0.

Import from. Enter the path and name of the data file to be

imported or use the browse button [] to invoke the Browse

dialog box for searching your projects. For your reference, textfile contents will appear in the File datatext box.

4. Choose Nextto proceed.

5. Text file data will appear in the lower text box of the Block Model

Import: Fields dialog box. By highlighting any Statuscolumn

entry in the lower window, the block model data to be imported forthe highlighted row will appear in the right-hand text box.

Right clicking on any Statuscolumn entry brings up a Data

Status Menu, containing commands which enable you to

manipulate the characteristics of the data file. SeeEdit Data

Statusbelow for instructions.


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Block Model Import: Fields dialog box

6. If you are blocking by indices, enter the following data:

Reverse index. Check the Level, Row,and/or Columnboxes

if you wish to reverse the associated index. For example, if the

file you are importing refers to levels 1 to 9 from top to bottom,

checking the box will assign levels 1 to 9 from bottom to top.

7. If you are importing a freeformat text file, check the Delimited

formatbox. Then:

Activate the radio button to the left of the appropriate

delimiter: Comma, Space, Tab, Semicolonor Other.

If you chose Other , enter the delimiter character in theentry box below.

Or,

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7. If you are importing a fixedformat text file, uncheck the

Delimited formatbox. The Edit fixed columnscommand button

will be active. Choose it to edit the file if necessary, using the

procedures described below underEdit Fixed Columns.

8. If you are importing a text file, enter the following data:

Headers. Enter the following parameters to identify header

rows in the data file:

Delimiter. Enter the delimiter which separates field

header names in the data file, if any.

In column. If header information appears in multiple rowsin the data file, enter the column number containing theheader data.

In quotes. Check this box if column headers appear inquotes in the data file. If this box is checked, quotes will beremoved for display in the text entry box column headers.

You may have to click in the lower text box to see these edits

take effect.

Display options. Check or uncheck the following boxes to

control display of the data file in the lower text entry box.

Display skipped lines.

Display header lines.

SeeEdit Data Statusbelow for instructions on identifying header

and skip lines.

9. To assign a data field:

In the righthand text box, double click on an entry in the

Block Modelcolumn.

In the Select a Field dialog box, enter the field number, or pick

it from the list.

Choose OK.

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Note that if you are blocking by coordinates, the first three rows in

the righthand text box will allow you to assign fields for X, Y and

Z coordinates. When blocking by indices, they will allow you to

assign fields containing Level, Row and Column indices.

If you change column names by specifying headers, you may have to

reassign data fields before importing.

10. Choose Nextto proceed or Backto return to the previous dialog box.

Block Model Import: Import dialog box

11. In the Block Model Import: Import dialog box, enter the following

data:

Options.

On empty value. Choose the procedure to be followed inthe event an empty block is encountered in the import file

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Ignore to not import any data for the empty block, Make zeroto import a data value of zero, or Abort to halt the importprocess.

Overwrite. Choose the types of blocks to be overwrittenwith the imported data: Any block, Zero and empty blocksorOnly empty blocks. Block types not selected will retain theiroriginal values.

Ignore out of bounds blocks. Check this box to skipimport of blocks outside the project geometry. Uncheck the

box to issue a warning and halt import when an out ofbounds block is encountered.

Testing.

Number of lines. Enter a number of lines sufficient toprovide a meaningful import test.

12. Choose Testto test the import procedure without overwriting anycurrent block models. Results appear in the lower text entry box.

13. Choose Finishto complete the import procedure, or Backto return

to the previous dialog box.

14. Results will appear in the lower text entry box. Choose Close.

Edit Data Status

Right click on a Statuscolumn entry in the lower text box of the Block

Model Import: Fields dialog box to bring up the Data Status Menu.

This menu enables you to assign lines in the import file to be read as

headers, skipped, or read as data..

Make Field Headers

Choose this command to flag a line in the text file as a header. A file

can have multiple header lines, but all must precede the first data

line.

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Skip Lines

Choose this command to flag a line in the text file to be skipped.

Make Data

Choose this command to flag a line in the text file as data.

Determine Columns

When editing fixedformat files, you can choose this command to

format the columns based on the entries in the current line. The

number of columns will be fixed by the longest line in the file, but the

start position and field length will be determined by the entries in the

current line. If the current line has fewer fields than other lines in the

file, columns to the right of the last entry will be of zero-length.

Edit Fixed Columns

Choose this command button in the Block Model Import Fields dialog

box to edit the field positions in a fixedformat data file.

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g


Edit Fixed Columns dialog box

1. In the Edit Fixed Columns dialog box, highlight a desired entry in

the Column namecolumn.

2. Perform any of the following operations:

You can increment the length of the field by 1 each time you

click on the Lengthheader.

Count. Activate the appropriate radio button to make eachclick Decreaseor Increasethe length.

Choose the Move up command to insert a new zerolength

column at the start position.

Choose the Split Column command to split the column in half.

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The Column contentswill show how the formatting of the first

data line in the text file changes in response to your edits.

Note that you cannot delete columns. However, you can reduce

unwanted columns to zerolength.

3. Repeat Steps 1 and 2 as desired.

4. Choose OKto complete fixed column editing.

Export Block Model

Choose this command to copy block model data to any project. You

may export one or multiple models.


Or, to export a single model only,

Highlight a block model in the Project View area.

2. Choose Block }}Data }}Export Block Model.

Or,

Choose Exporton the Project View Context Menu.

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Export Block Model dialog box

3. In the Export Block Model dialog box, enter the following data:

File information.

Export type. For a free format text file, choose Commadelimited. For an extraction file, choose .MEXfile.

Export to. Enter the path and name of the destination file,or use the browse button [] to invoke the Browse dialogbox for searching your projects.

Block data models. Check the boxes by the names of the

models you wish to export from the selected folder.

Options. Check the appropriate boxes to choose any data fields

to be exported in addition to the block model values. Fields

appear as seen in Figure 11-2.

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Export block indices.If you are exporting data to a textfile, check this box to write the level, row, and columnindices of each cell.

Export coordinates.If you are exporting data to a textfile, check this box to write the XYZcoordinates of thecentre of each cell.

Write field headers.Check this box to write the names ofthe data fields on the first line of the export file.

Level, Row, Col, X, Y, Z, Rock Type, Density

15, 1, 1, 1960.245, 2376.678, 382.500, 88, 2.1

15, 1, 2, 1973.236, 2384.178, 382.500, 10, 2.3

15, 1, 3, 1986.226, 2391.678, 382.500, 12, 2.5

Figure 11-2: Typical commaseparated fields in export text file

Selection range. Depending on which blocks you wish to

export, activate the radio button alongside All blocks in model,

Blocks in current selection, or Blocks not in current selection.

4. Choose OK.

5. If the destination file already exists, chooseYesto overwrite it.

6. The number of data records exported will be reported. Choose OK.

Create

Choosing Block }}Createbrings up a submenu of choices that let you

create and edit block model project geometry, folders and models. You

can also create sections based on project rows, columns or levels.

Field headers

Block indices

Coordinates

Data

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Create/Edit Block Model Project

Choosing Block }}Create }}Create/Edit Block Model Project

invokes the Edit Block Model Project dialog box or the Create BlockModel Project wizard.

If you areeditingan existing project, you may access three Edit Block

Model Project tabs to edit general parameters, geometry, and levels for

your project.

If you are creatinga new project, the Create Block Model Projectwizard will guide you through the steps of defining the project

geometry, then allow you to define project contents.

Define General Parameters

Choose the Generaltab to define general project parameters.

1. On the Generaltab, enter the following data:

Title. Enter a title of up to 64 characters for the project.

Seam model. Check this box to define a seam geometry. Leave

it unchecked to define an orthogonal geometry.

2. If you altered the seam model setting,a status box will appear,

warning you that geometry and level data will be reset. ChooseYes

to continue.

3. Choose OKor Next.

Define Geometry

Choose the Geometrytab to define project dimensions and location.

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Geometry tab

1. On the Geometrytab, enter the following data:

Origin. Enter theX,Yand Zcoordinates of the project origin

in the units of your project coordinate system.

Number of blocks. Enter the number of Columns, Rowsand

Levelsin your project geometry.

Block sizes. Enter the Column sizeand Row sizein the

units of your project coordinate system.

If you are not creating a seam geometry, enter the following:

Z irregularly spaced. Check this box if levels are notregularly spaced, or leave it unchecked if all levels arespaced evenly.

Level. If levels are regularly spaced, enter the level heightin the units of your project coordinate system. If levels areirregularly spaced, enter the default level height.

Altering these settings will invoke a status box, warningyou that level heights will be reset. ChooseYesto continue.

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Orientation. Figure 11-3 shows the standard orientation of a

block model project geometry. Enter the following parameters

to specify the orientation of your geometry.

Figure 11-3: Project orientation

Rotation. Enter the rotation angle in degrees anti-clockwise from the coordinate system easting to the rowwise direction.

2. Choose OKor Next.

Define Levels or Seams

Choose the Levelstab (for an orthogonal geometry) or the Seamstab

(for a seam geometry) to define thicknesses, elevations and

descriptions of project layers.

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Levels tab (above) and Seam tab

1. If you are creating a seam geometry, enter the following data :

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Top surface. Edit the SEGrecord number which conforms to

the top of the project geometry. If you have not yet created

SEGs, enter a default value which you can change later.

2. Use command buttons as desired to add, insert, and delete levels,

edit level information, set level heights, and generate level

descriptions automatically. See the following subsections for

instructions.

Add, Insert, Delete, or Edit Levels or Seams

Each row in the grid text box contains the data for a single level or

seam. Follow these steps to populate the grid.

1. Choose the desired command button on the Levelsor Seamstab:

Add, Insert, Delete. or Edit. (You must highlight a level or seam

before using the latter three commands.) See instructions in the

introductory section of this chapter underModel Grids andCommand Buttons.

2. If you are using Edit , enter the following parameters in the Level

Properties dialog box.

For an orthogonal geometry:

Level height. Edit the desired level thickness in the units of

your project.

Level description. Edit the description of the level.

or, for a seam geometry:

Bottom surface. Edit the SEGrecord number which conformsto the bottom of the seam. If you have not yet created SEGs,

enter a default value which you can change later.

Seam description. Edit the description of the seam.

3. Choose OK or Next to apply the changes to the geometry.

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Set Level Heights

You can set the height of one or more levels in an orthogonal

geometry.

1. On the Levelstab, highlight one or more level column entries and

choose Set Height.

2. Enter the desired level thickness in the units of your project.

3. Choose OK to edit the levels in the list.

4. Choose OK or Next to apply the edits to the geometry.

Automatically Generate Descriptions

You can generate simple level or seam descriptions automatically

based on sequential level numbers, or, in the case of levels, on

elevation. This process will reset descriptions for all levels in the

project.

1. On the Levelstab, choose Auto-description.

Options for Generating Descriptions Automatically dialog box

2. In the Options for Generating Descriptions Automatically dialog

box, enter the following parameters:

Generate descriptions from. For seams, choose Level number.For levels, choose Elevation of toe, Elevation of crest, Elevation of

mid-benchor Level number.

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If you are generating descriptions from an elevation, enter the

following parameter:

Number of decimals. Choose 0, 1or 2for the number of

decimal places to appear in the elevation description.

3. Choose OK to update the descriptions in the list.

4. Choose OK or Next to apply the edits to the geometry.

Define Project Contents

If you are creating a newproject, you will continue to Steps 4, 5 and 6

in the Create Block Model Project wizard. Here you will be able to

create folders to organize the block models in your project.

1. Step 4 of the wizard provides a quick method to create a default

folder. Enter the following parameters:

Are you creating a standard block model project?Check

this box to automatically create a default folder called

"Standard" containing the following models (where "A,B,C"

represent up to ten grade elements), or uncheck the box to

proceed without automatic folder creation:

Automatically created Standard folder contents

Is this a partial model?.If you checked the box above,check this box if you also wish to include a percent model in

the Standard folder.

2. Choose Next.

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3. If you returned to this dialog box and made changes after reaching

Step 5 of the wizard, you must confirm that you wish to overwrite

any existing folder and model information. ChooseYes.

Step 5 of the wizard is where you define folder names and contents. If

you checked the top box in Step 4 of the wizard, the grid text box will

be filled for you already. You may edit the data or create new folders.

Create Block Model Project wizardStep 5

4. Create folders according to the procedures in the subsections

below. You must define one and only one default folderper project.

5. Choose Next.

6. In Step 6 of the wizard, a summary of the new project parameters

will appear. Check the results and choose Finish.

Add a New Folder

In Step 5 of the wizard, follow these steps to add a new folder to theproject.

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1. Enter the following parameters.

Folder name. Enter a name for the folder.

Folder contents. In the grid text box, enter the attributes ofeach block model to be contained in the folder named above:

Name. Enter a name for the block model.

Storage. Choose the data storage type from among theseoptions: Byte, Scaled, Short, Integer, Single, Double

Scale.If you have a chosen the scaled data type, enter anappropriate scaling factor.

Decimals. Enter the number of decimals to show whendisplaying values.

Default value. Enter a default value to assign to cells

containing no data.

Map. Assign a block model type by choosing from Generic,Rock type, Density, Percent, Economic, Elevation, or, for a grademodel, any defined grade element name.

Be sure to tab the cursor out of a cell to save the contents of the

cell. See Volume I: Core, Chapter 4: Dialog Boxesfor further

instructions on grid text boxes.

Default folder. Check this box to make the current folder the

default folder, or uncheck it to make the current folder not be

the default folder.

You must define one and only one default folder per project. If

you define more than one, you will have to uncheck the box inall but one of your folder definitions in order to proceed.

2. Choose Addto add the new folder to the list of defined folders.

Edit a Defined Folder

In Step 5 of the wizard, follow these steps to edit a folder in the

project.

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1. Choose the name of an existing folder from the Defined folders

list. The folder name will appear in the Folder name box at left

and its contents in the grid text entry box below.

2. Enter the following parameters.

Folder name.If you wish to create a new folder (and retain

the existing one), change the folder name.

Or,

If you wish to edit the contents of the existing folder, do not editthe folder name.

Folder contents. In the grid text box, edit the attributes of

each block model contained in the folder as described in the

previous subsection.

You can choose Clearto delete the contents of the folder without

deleting the folder itself.

3. Choose Add if you changed the folder name, or Save if you did not.

Delete a Defined Folder

In Step 5 of the wizard, follow these steps to delete a folder from theproject:

1. Choose the name of an existing folder from the Defined folders

list. The folder name will appear in the Folder name box at left

and its contents in the grid text entry box below.

2. Choose Deleteto eliminate the existing folder and its contents.

Folders

Choosing Block }}Create }}Foldersbrings up a submenu of choices

that let you create, edit, and delete block folders.

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Create Block Folder

Choose this command to create a new block folder in a project.

1. Highlight a project in the Project View area.

2. Choose Block }}Create }}Folders }}Create Block Folder.

or

Choose New Folderon the Project View Context Menu.

3. The Create Block Folder Wizard will guide you through the folder

creation process. Enter the following data:

Folder name. Enter a name for the folder.

Default folder. Check the box to make this folder the default

folder. There must be exactly one default folder in a project.

4. Choose Next.

5. A summary the contents of the new folder will appear. Choose

Finish.

Edit Block Folder

Choose this command to edit the properties of a block folder.


2. Choose Block }}Create }}Folders }}Edit Block Folder.

or

Choose Propertieson the Project View Context Menu.

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Folder Properties dialog box

3. In the Folder Properties dialog box, edit the following data:

Folder name. Edit the folder name as desired.

Default folder. Check the box to make this folder the default

folder.

Note: Since there must be exactly one default folder in each

block model project, you cannot reassign the default by

unchecking the box. Instead, repeat Steps 1 and 2 for the folder

you wish to make the default, and check the box there.

Block model mapping. The available block model types are

listed at right. These include Rock Type, Density, Percent,

Economic, Elevation, and up to ten Grade models. For each

block model type you wish to map, enter the following:

Block model field. Choose the block model name fromamong the existing models in the folder, or choose Nonetomap no model of a particular type. If you are outside the

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default folder, you can choose Get from default folderfor


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model mappings (other than for percent models).

4. Choose OK.

Delete Block Folder

Choose this command to delete a block folder.


2. Choose Block }}Create }}Folders }}Delete Block Folder.

or

Choose Deleteon the Project View Context Menu.

3. ChooseYes.

4. If there are block models in the folder, chooseYesto delete them or

Noto save them.

5. A status box will report that the folder is deleted. Choose OK.

Models

Choosing Block }}Create }}Modelsbrings up a submenu of choices

that let you create, edit, initialize, and delete block models.

Create Block Model

Choose this command to create a new block model.


2. Choose Block }}Create }}Models }}Create Block Model.

or

Choose New Block Modelon the Project View Context Menu.

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3. The Create Block Model Wizard will guide you through the model


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creation process. Enter the following data:

Model name. Enter a name for the model.

Default value. Enter a default value to assign to model cells

with no data.

Units. Enter the units in which to express model data (such as

tons/m3for density.)

Product factor. Enter a multiplication factor which will beused to convert the data value to the desired units.

Elevation model. Check this box to create an elevation block

model or uncheck it to create any other type of model.

4. Choose Next.

5. In the next Wizard step, enter the following data:

Type. Choose the data storage type from among these options:

Byte, Scaled, Short, Integer, Single, or Double.

Scaling.If you have a chosen the scaled data type, enter an

appropriate scaling factor.

6. Choose Next.

7. In the next Wizard step, enter the following data:

Decimals. Enter the number of decimals to show when

displaying values.

Cell display profileor (for elevation models) SEGdisplayprofile.Choose a predefined display profile to use with this

block model.

Block model mapping. Assign a block model type by choosing

from Generic, Rock type, Density, Percent, Economic, Elevation, or,

for a grade model, any defined grade element name.

8. Choose Next.

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9. A summary the properties of the new model will appear. Choose


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Finish.

Edit Block Model

Choose this command to edit block model properties.


2. Choose Block }}Create }}Models }}Edit Block Model.

or

Choose Propertieson the Project View Context Menu.

3. In the Model Properties dialog box, edit the following data:

General.

Model name. Enter a name for the model.

Default value. Enter a default value to assign to modelcells with no data.

Units. Enter the units in which to express model data(such as tons/m3for density.)

Product factor. Enter a multiplication factor which willbe used to convert the data value to the desired units.

Storage.

Type. Choose the data storage type from among theseoptions: Byte, Scaled, Short, Integer, Single, or Double.

Scaling.If you have a chosen the scaled data type, enter anappropriate scaling factor.

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Display.

Decimals. Enter the number of decimals to show whendisplaying values.

Cell display profile. Choose a predefined cell displayprofile to use with this block model. Or use the browsebutton []to bring up the Cell Display Profile Editor. SeeCell Display Profile Editorlater in this chapter.

Or, for elevation models,

SEGdisplay profile. Choose a predefined SEGdisplayprofile to use with this block model. Or use the browsebutton []to bring up the Surface Elevation Grid Display

Model Properties dialog box

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Profile Editor. See SEGDisplay Profile Editorlater in thischapter


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chapter.

4. Choose OK.

Initialize/Re-Initialize Block Model

Choose this command to initialize or re-initialize a block model.


2. Choose Block }}Create }}Models }}Init / Re-Init Block Model.

or

Choose Initializeon the Project View Context Menu.

3. In the Initialize Block Model dialog box, enter the following data:

Initial value. Enter the value to which all selected blocks will

be initialized.

Selection range. Depending on which blocks you wish to

initialize, activate the radio button alongside All blocks in model,

Blocks in current selection, or Blocks not in current selection.

If you are initializing a density model,enter the following data:

Update density model from rock type model. Check the

box to initialize the model to the density value found in the

rock code profile of the rock type specified in the local rock type

model. Uncheck the box to use the specified initial value.

4. Choose OK.

Delete Block Model

Choose this command to delete a block model from the project.


2. Choose Block }}Create }}Models }}Delete Block Model.

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or


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Choose Deleteon the Project View Context Menu.

3. ChooseYes.

4. A status box will report that the model is deleted. Choose OK.

Sections

Choose this command to create vertical sections and plan views basedon block model project rows, columns, and/or levels.

1. Choose Block }}Create }}Sections.

2. The Block Model Sections dialog box will appear. You can create

sections from Rowsand Columns. For an orthogonal geometry,

you can also create planviews from Levels. Each row, column orlevel entry you select will yield its own section, using the name

shown in the dialog box. To select row, column and level entries:

Check the boxes to select individual or multiple entries

Choose Allto select all entries.

Choose Noneto deselect all entries.

Enter the following data to choose entries by Steps:

Every Nth. Enter the step size.

Starting from. Enter the first entry to select (0 is invalid).

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3. If you chose entries by Steps, choose Apply.

4. To assign a series number to a set of sections, enter the following:

Row series, Column series or (for orthogonal geometry only)

Level series. Enter the desired series number to assign to thisset of sections.

Looking north. Check this box to create a Rowseries looking

north (sequence numbers increase as row numbers decrease)or

uncheck it to create the series looking south.

Looking east. Check this box to create a Columnserieslooking east (sequence numbers increase as column numbers

increase) or uncheck it to create the series looking west.

Sequence numbers in a level series increase downward.

5. Choose OK.

Block Model Sections dialog box

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