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Changing the units and legend on a piper plot

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I am just wondering if it is possible to change the units shown on a piper plot from %meq/kg to %meq/L please?

Also, is it possible to change the dimensions of the legend border? It is currently overlapping with some of my text.

Thanks in advance,




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Hi BryanW,

The Piper diagram units cannot be changed. Because they’re percentages, though, it doesn’t matter whether you use meq/kg or meq/l. You can see this for yourself by plotting a ternary diagram (these accommodates any unit choice, such as mg/kg or mmol/l, not just electrical equivalent units) or making a quick Excel calculation. If you’d like, you can edit the text in PowerPoint or Illustrator. Just go to Edit > Copy/Copy As and paste special/paste the .emf or .ai file into your desired program.

Can you please attach a plot with the text overlapping the legend border? Or your GSS file? It might be that certain characters in the sample name aren’t being accounted for correctly when the legend border is drawn. For now, you can also edit this in PowerPoint or Illustrator.


Brian Farrell
Aqueous Solutions 

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