if you are able to generate a rbg-value from the data in the 4th column,
then it can be done:
http://gnuplot.sourceforge.net/demo/rgb_variable.html
vcosta wrote:
>
> I have a question concerning the 3D capabilities of gnuplot.
> I have an ascii data file with 4 columns. The first 3 columns are x,y,z
> coordinates, and I would like to represent them as 3D plot with dots,
> using the 4th column for a colour scale on the dots colors. (a 4 dimension
> plot)
> Is that possible? How?
> I thought that pm3d could be used for that, but could not find out from
> the help page.
>
>
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