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Isopleth

An isopleth is a line of equal or constant value on a map or grid of varying quantities.

Different types of isopleth are given different names according to the nature of the quantity involved:

"iso" can be replaced with "isallo" to give it the meaning of a line connecting points where some variable has changed at the same rate during some time period.

Synonyms: isogram, isarithm

External Links

  • Drawing Contour Plots (http://avc.comm.nsdlib.org/cgi-bin/wiki_print.pl?Drawing_Contour_Plots). A lesson plan that deals with drawing various isopleths.



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