Sunday, December 5, 2010

Isopleth

[phfield.gif]
An Isopleth map displays a data set through visualization.  In this case, hydrogen ion concentration as measured by ph is being portrayed for the lower 48 U.S.  A scale is given to interpret the colors, and some of the data is presented in the form of numbers directly on the map.http://www.weathernotebook.org/images/winter/3.jpg
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