I'm having trouble trying to add lines to an image plot. Here's an example illustrating the problem
plot 'xyz.dat' using image
set arrow 0,0 to 1,1 nohead
replot
Yet no lines appear. Is it even possible to add lines to an image plot?
You need to put the arrow
in front of the image:
set arrow front from 0,0 to 1,1 nohead
plot 'xyz.dat' with image
set arrow from 0,0 to 1,1 nohead
Oct 9, 2013 at 23:26