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Rua Cambodia Gidar Cartography 3

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Introduction to Cartography - Lecture at the GIDAR Master course at RUA, Cambodia
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A world full of maps (Daily life with maps) Artwork and Data (Visualization of Geo-Data) Types of maps, and Content Map projections and coordinates Introduction to GPS Digital Cartography with GIS tools Practical GIS mapping tasks Your first GIS map Introduction to Cartography, GIS and GPS Part I and II
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A world full of maps (Daily life with maps)Artwork and Data (Visualization of Geo-Data) Types of maps, and ContentMap projections and coordinatesIntroduction to GPSDigital Cartography with GIS toolsPractical GIS mapping tasksYour first GIS map

Introduction to Cartography, GIS and GPS Part I and II

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8/6/2008 - University Advisor Jan-Peter Mund (PhD Geographer) 2

Content of two modules1. Objectives and Timing of the training2. General Introduction to Cartography

Geographical Information systems and Global Positioning systems

3. Living with maps4. Types of visualization5. Content of maps6. GPS, Projections and Coordinates 7. Introduction to GIS mappings tools8. Practical mapping with Arc-View9. Examination

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Map types - Example Isoline Map

This is an isolinemap showing the high temperatures for January, 1981.

NOAA climate data was used to distinguish temperatures.

Isoline mapIsoline maps show geographic quantities that exist over an assumed continuous surface

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8/6/2008 - University Advisor Jan-Peter Mund (PhD Geographer) 4

Example: ENVIRONMENTAL MAPS Meteorological maps that show climate, weather and wind are types of environmental maps. Meteorologists, oceanographers, geographers, city planners, and many other professionals depend greatly on these maps to record and forecast their specific field.

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8/6/2008 - University Advisor Jan-Peter Mund (PhD Geographer) 5

Example: METEOROLOGICAL MAPS

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Example: Elevation MAPS

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Is Cambodia a lowland or an upland country

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Example 3 Dimensional MAPS

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Map types – Bathymetric Map

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Map types - Example Choropleth MapThis is a choropleth mapshowing the thedifferent levels of methane emissions form beef cattle in North Carolina by county.

Natural breaks from data supplied by the 1992 census of agriculture were used deciding which counties would fall in different class levels.

Choropleth mapChoropleth maps show the disribution of generalized quantitative data values per unit area

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8/6/2008 - University Advisor Jan-Peter Mund (PhD Geographer) 11

Map types – Ex. Demographic Map

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Map types – Demographic Map (2)

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Map types – Demographic Map (3)

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Map types – Harvest Maps (1)Which provinces had a good rice harvest in 1998 ?

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Map types – Harvest Maps (2)Which provinces had a good rice harvest in 1998 ?

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Map types – De-Mining Map

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Map types – Election maps

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Other Map types – Point mapsWhen you use a Multiple Symbol Map to display your data, you can associate different symbols for a value or range of values for each point of data.

When you use a Pushpin Map to display your data, individual data points are represented as Pushpins on the map. Unlike Multiple Symbol Maps, Pushpin Maps display all the data points with a single symbol.

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Other Map types – Shaded mapsWhen you use a Shaded Area Map to display your data, the geographic areas by which you've chosen to display your data are represented by shades of colour corresponding to values or ranges of values for those areas.

When you use a Shaded Circle Map to display your data, information is represented by circles placed at locations on the map or at the centre of each geographic area by which you are mapping your data. The shading of the circle represents the data value atthat particularlocation or geographicarea.

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Other Map types – Circle and Pie mapsIn a Sized Circle Map, your data is represented by circles of varying size on the map. The larger the circle at a given location, the higher the value represented.

When you use a Pie Chart Mapto display your data, you can map up to sixteen numerical data fields to each location of data. The size of each pie segment corresponds to its value as a percentage of the whole.

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Other Map types – Pie and Graph mapsWhen you use a Column Chart Mapto display your data, you can map up to sixteen numerical data fields to each location of data. Each data field is shown as a vertical column of varying size. The size of each column corresponds to its value.You can also assign a different colour to each column to make Data fields easy to visually identify.

When you use a Sized Pie Chart Map to display your data, you can map up to sixteen numerical data fields to each location of data. The size of each pie segment corresponds to its value as a percentageof the whole. The size of each pie chart corresponds to the sumof these

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Convention of these other Map types (1)The list below describes some uses for each map type.

Map Type Recommended toShaded Area Compare a single numerical data field for larger areas such

as states, counties, and ZIP Codes. This type of map is also useful for displaying non-numerical data associated with large areas.

Shaded Circle Compare a single numerical data field at points such as cities and specific addresses. This type of map is useful for data that contains many records, because shaded circles may prevent overlapping and make your map easier to read. You can also use this map type to represent a second set of data on a Shaded Area Map.

Sized Circle Compare a single numerical data field for concentrated areas such as addresses, cities, and points. This map type is useful to quickly compare data from one location to another.

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Convention of these other Map types (2)

Map Type Recommended toMultiple Symbol Display a single data field at points such as cities and

specific addresses. You may want to use this map type to assign a different symbol for each range or value of data.

Pie Chart Compare records with more than one field of numerical data per location. This map type is useful if you want display values that have been sub-divided.

Sized Pie Chart Compare records with more than one field of numerical data per location. This map type is similar to the Pie Chart but the size of the pies is determined by the sum of the data fields. This type of map is useful when you want to compare the sum of sub-divided data values from one location to another.

Column Chart Compare records with more than one field of numerical data per location. This type of map is useful for displaying data comparing different groups of information, as well as data containing negative numbers.


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