I did not get a response to previous post on this topic so I thought I
would try again but with greater detail.
I have written a little gnuplot script that plots a 2D gray-scale image
of the data contained in the file g_mag.dat. Here it is:
set ticslevel 0.0
set xlabel "x"
set ylabel "y"
set size ratio 1
set pm3d map
set palette gray
splot 'g_mag.dat' matrix
When this script is run the GnuPlot window reports (in the lower left
corner) the pixel position of the cursor as the mouse is used to move
it. In addition I would like the value of the pixel at the cursor position
to be reported. How can I do this?
How can I get gnuplot to report the gray-scale value at a
point in the image when I position the cursor at the point?