Thematic Maps
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buttons.Soil Map of Fairfax and Alexandria counties in Virginia, USA
In the previous video, the speaker said we use GIS to make thematic maps. However, humans have made detailed thematic maps by hand or with software that is not a GIS long before GIS became mainstream during the late 1980s and early 1990s. Today, GIS allows us to make these maps more quickly. Access to accurate data has increased the use of maps and facilitated the mapmaking process. These three thematic maps were created by hand before the advent of GIS.
Figure 1.1 1915 Soil Map of Fairfax and Alexandria counties in Virginia, USA (William T. Carter and C.K. Yingling Carter of the United States Bureau of Soils, A. Hoen and Co and Geological Survey. U.S. Dept. of Agriculture. Public Domain).
Source: William T. Carter and C.K. Yingling Carter of the U.S. Bureau of Soils, A. Hoen and Co. and Geological Survey. U.S. Dept. of Agriculture, http://www.loc.gov/item/90680839/
This work is in the Public Domain.