Hi,
I have a scattered data set which I want to plot using pm3d. In the
input file many datapoints are undefined. I can use dgrid3d to
calculate values for the missing data points.
However, I would like to simply not plot any value at all where there
is no data defined. Is this possible? If I dont use dgrid3d it says:
gnuplot> set pm3d interpolate 2,1
gnuplot> splot 'f1.txt' u 1:2:3 with pm3d
Warning: Single isoline (scan) is not enough for a pm3d plot.
Hint: Missing blank lines in the data file? See 'help pm3d'
and FAQ.
any ideas? Can I define a value as undefined in the data file?
