I wanted to plot some planes in a 3D plot red, using this:
splot 'err.dat' w l lt 1, \
'err.dat' using 1:2:4 w l lt 2 lc rgb "red", \
'err.dat' using 1:2:5 w l lt 2 lc rgb "red"
but they came out black. What am I doing wrong please?
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