hydrogeo                Groundwater data presentation and
                        interpretation.
piper                   Create a new piper object
piper-class             Class 'piper'
piperPaper              Create a new piperplot object
piperplot-class         Class 'piperplot'
plot,piperplot-method   Plot the diagram area with two triangles and a
                        diamond
testData                Major ions as a percentage of total major ions
                        - Test Data
toPercent               Major ions as a percentage of total major ions
zaporozec               Major ions for groundwaters reported by
                        Zaporozec
