Includes some features not easily done in Excel e.g.
#SANDSTONE TERNARY DIAGRAM SOFTWARE#
From their web page: "Igor is an extraordinarily powerful and extensible scientific graphing, data analysis, image processing and programming software tool for scientists and engineers. (2005) Petrograph: a New Software to Visualize, Model, and Present Geochemical Data in Igneous Petrology, Geochem. Source code is written in MS Visual Basic 6.0 and it runs under Windows 98/2000/XP platforms. Possible to plot many classification diagrams and "petro-tectonic" plots.
#SANDSTONE TERNARY DIAGRAM FOR MAC#