When trying to produce a Surfer post map with Proportional Scaling for symbols, I get an error message "Minimum data value cannot equal maximum". The scaling data are in the range of 0 to 10e-18.

Surfer requires the difference between the minimum data value and maximum data value to be at least 1x10-5 (0.00001).
If your data values vary over a range smaller than 1x10-5, consider using the Data | Data | Transform command to convert your data values into units where the magnitude of the data values is greater than 1x10-5.


Updated October 30, 2018

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