thematic map


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thematic map

(Data West Research Agency definition: see GIS glossary.) A map that displays the spatial distribution of an attribute that relates to a single topic, theme, or subject of discourse. Usually, a thematic map displays a single attribute (a "univariate map") such as soil type, vegetation, geology, land use, or landownership. For attributes such as soil type or land use ("nominal" variables), shaded maps that highlight regions ("polygons") by employing different colors or patterns is generally wanted. For other attributes (like population density - a "metric" variable), a shaded map in which each shade corresponds to a range of population densities is generally wanted.

Thematic maps are used to display geographical concepts such as density, distribution, relative magnitudes, gradients, spatial relationships and movements. Also called geographic, special purpose, distribution, parametric, or planimetric maps.
References in periodicals archive ?
Map offers enhanced detail of Appalachia and the Illinois Basin as well as a thematic map showing current and proposed utility plant consumption by quantity and source region.
This thematic map completely transforms the task of browsing a document collection.
New analyses and visualizations: New reports with charting and thematic map overlays showing population and worker origin and destination distributions
Mapping Time presents a multi-faceted look at the famous thematic map by Charles Joseph Minard that shows a statistical timeline of Napoleon's invasion from beginning to end.
A Contiguous option has been added to the Cartogram Map to present a new and compelling way to display thematic map data.
With these studies in mind, a clear gap exists in the literature concerning the interpretation and testing of thematic map symbols in a whole-map context, particularly with regard to the recognition of spatial patterns.
His emphasis on questions related to thematic map design, from the development of thematic technique, to the implementation of aesthetic design in print production, and the ways in which design theory and praxis can be taught, shape the KU undergraduate and graduate course curriculum.
The visualization can be either a thematic map of the network, for clear graphical interpretation, or a detailed tabular report conveniently provided directly in the Pipe Renewal Planner dialog.
The benefit of thematic map creation is the automatic map element construction in GIS.
Combining the usage of acceleration time histories with the corresponding thematic map, it is easy to identify comfort problems and understand what have caused them, localizing the place where they have occurred and the components of the acceleration vectors.
In an innovative use of Web technology, you can use the quick thematic map tool to display the geographic patterns in the statistical data.