i need to plot the surface of a discrete 3d function, the data is this:
0.5520000 -0.3840000 0.0000001 0.0000001
0.5520000 -0.3760000 6.5919072e-08 5.8261450e-08
0.5520000 -0.3680000 0.0398564 0.0335707
0.5520000 -0.3600000 2.4211279e-08 2.6520126e-08
0.5520000 -0.3520000 0.0000002 0.0000002
0.5520000 -0.3440000 0.1945450 0.1962598
0.5520000 -0.3360000 0.0794571 0.0792212
0.5520000 -0.3280000 1.3106068e-08 1.6226917e-08
0.5520000 -0.3200000 0.3029487 0.3209866
0.5520000 -0.3120000 0.2192498 0.2272512
0.5520000 -0.3040000 0.2904586 0.3077338
0.5520000 -0.2960000 0.2505561 0.2639075
...
and i want to plot the 1:2:3 columns. I try to use the simple gnuplot command:
splot 'data.dat' u 1:2:3 with pm3d
but i receive the following warning message:
Warning: Single isoline (scan) is not enough for a pm3d plot.
Hint: Missing blank lines in the data file? See 'help pm3d' and FAQ.
And the output is an empty 3d plot.
Could someone help me please?
Like the warning message tells you: you are missing blank lines in your file. For use with pm3d, the data must be organized as follows:
x0 y0 z00
x0 y1 z01
....
x0 yN z0N
x1 y0 z10
x1 y1 z11
...
x1 yN z1N
etc. You must have a single blank line between consecutive x values.