#1
30th September 2017, 09:19 AM
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Thematic Maps
Hii sir, I wants to get the Information About the Thematic Maps will you Please provide It ?
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#2
30th September 2017, 10:42 AM
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Re: Thematic Maps
A thematic map is a map that emphasizes a particular theme or special topic such as the average distribution of rainfall in an area. They are different from general reference maps because they do not just show natural features like rivers, cities, political subdivisions and highways TYPES OF THEMATIC MAPS Although cartographers can use these datasets in many different ways to create thematic maps, there are five thematic mapping techniques that are used most often. The first and most commonly used of these is the choropleth map. This is a map that portrays quantitative data as a color and can show density, percent, average value or quantity of an event within a geographic area Another thematic map is the isarithmic or contour map and it uses isolines to depict continuous values like precipitation levels. These maps can also display three-dimensional values like elevation on topographic maps. Generally data for isarithmic maps is gathered via measureable points (e.g. - weather stations) or is collected by area (e.g. - tons of corn per acre by county). Isarithmic maps also follow the basic rule that there is a high and low side in relation to the isoline Uses of the Thematic Map Thematic maps serve three primary purposes. They provide specific information about particular locations. They provide general information about spatial patterns. They can be used to compare patterns on two or more map Thematic Maps |