folks, I was hoping someone could help me out. I am trying to use a datafile to create a fence plot with Gnuplot (version 5.2 patchlevel 7) that hopefully would look something like this: Fence plot using Gnuplot

However, using the script

set terminal pngcairo enhanced size 800,600
set output 'output1.png'

splot for [i=0:615000:12300] "datafile" index i u 1:2:3 with lines

the results were disappointing. My output:Failed attempt at fence plot with Gnuplot

My datafile is very big and slightly different from the one used to make the plot I’m trying to recreate: It has 615000 lines, with 5000 “blocks” of data, each containing the value of a function at a specific time for 123 grid sites, from grid site 240 to grid site 362, without blank lines between the blocks. It looks like this:

     0.000   240      0.20000000E-39
     0.000   241      0.20000000E-39
     0.000   242      0.20000000E-39
...
     0.000   361      0.20000000E-39
     0.000   362      0.20000000E-39
     0.020   240      0.20000000E-39
     0.020   241      0.20000000E-39
...

and so on.

If I want some 50 lines to show up on the plot, like , I would imagine I need to skip several blocks, and only plot the relevant block after many timesteps, but I don’t know how to do it.

I realize that there are several questions that have been asked about fence plots with Gnuplot, and I went over all of them, but I completely failed in adapting their suggestions to my current case. Any help would be much appreciated.