VISAN Color Table Information

The VISAN reference documentation states the following with relation to the colortable property for WPLOT :

" The color table to associate with the values in dataset.
VISAN will first try to see if the value of this string is equal to one of its built-in predefined color tables: “BlackToWhite”, “WhiteToBlack”, “GreenToRed”, “RedToGreen”, “Cloud”, “Rainbow”, “Ozone”, “Blackbody”, or “Aerosol”.
In all other cases, the string is interpreted as a filename containing a VISAN color table definition."

I can find no reference to the VISAN color table definition in any file or documentation.

Is it possible to import a VISAN color table definition from an external file or export a customized color table to an external file?

This indeed is a bit of underdeveloped functionality. Passing a path to a colortable file also doesn’t seem to work.
What will work is:

a = wplot(product)

And then use something like this for colortable.txt:

ColorTable 1.0
0.0 0 0 1.0 1.0
0.5 0 1.0 0.0 1.0
1.0 1.0 0 0 1.0

Make sure to set NumberOfGradientEdges to the number of XRGBA values you provide at the end.

This should hopefully get you going until we properly fix this.

Thank you for your prompt reply.

Your solution works for me and gives the functionality that I need.