Open Source (freeware) graphics programmes and
its various applications in geology [iww]

3-dimensional plot

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A. Using gnuplot

B. Using GMT (Generic Mapping Tools)

C. Using Vis5d+

Simple map plot

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Harker diagram (rocks classification)

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Ternary plot and its application in Chemistry and Geology

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Using Grace/Xmgrace

Polar and parametric plot (gnuplot, iseng...$-)

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Note: the last diagram are drawn using gnuplot, Xfig, and LyX-1.2

Auto-correction plot (Geochemistry)

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Linear regression and multiplot

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