I have a file with scattered data (points located approximatelly on the vertices of a regular grid): first two columns are the x and y coordinates, then a few more columns with other data that I need to plot. I want to obtain color maps that represent this data, and since points are scattered I'm using dgrid3d to generate a regular grid and have a smoother representation. My problem is that when I set dgrid3d, gnuplot ignores the x and y ranges and plot the grid outside the figure frame. Bellow is a minimal script to reproduce my problem:
set view map
set yrange [0.4:0.8]
set xrange [0.2:0.8]
set pm3d
set style data lines
set dgrid3d 100,100,4
splot "./Terr.dat" using 1:2:(log($6)) pal
The result that I obtain is the following image:
Setting the option clip1in or clip4in of pm3d has no effect. If I unset view so that the result is a 3D surface, it also ignores the x and y ranges. I could easily write an script to pre-process the data and remove the points outside the range I want, but gnuplot should be able to manage this. Any idea?
I'm using gnuplot 4.2 patchlevel 6
Thanks!