Plotting ternary diagrams
See also the "soil texture plot" and "ternary plot" in the R Graph Gallery. You can find source code for each of them there. http://addictedtor.free.fr/graphiques/RGraphGallery.php?graph=76 http://addictedtor.free.fr/graphiques/RGraphGallery.php?graph=34 cheers, Mike
Phil Novack-Gottshall wrote:
Hi all, Can anyone point me to a function for plotting a ternary diagram (a triangular plot; typically, each axis ranges 0-100% with cumulative value for each point adding to 100% along all three axes)? It's frequently used by geologists to plot sedimentological or mineralogical composition, and I think I've seen it used in biome mapping (temperature/elevation/moisture). A bit further afield, do any functions exist to extend this to 4 axes, as a pyramidal quarternary diagram? Thanks for any advice, Phil ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Phil Novack-Gottshall pnovackg at westga.edu Assistant Professor Department of Geosciences University of West Georgia Carrollton, GA 30118-3100 Phone: 678-839-4061 Fax: 678-839-4071 http://www.westga.edu/~pnovackg ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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