[Gnuplot-info] Plot matrix data using cut-off values

[George P. <gp...@bi...>]

Hello,

I want to plot a 3-column data file using a black-white color scale.

I was wondering what is the syntax that allows those values of the 3rd
column to be colored black if they are smaller than a cut-off value and
white if they are larger than the same cut-off value

The three relevant lines from my script are

set cbrange [0.0:1.0]
set palette defined (0.0 "black", 1.0 "white")
plot "rmsdist4gnu_scale_1_30000.dat" using 1:2:3 with image

I know that is the last line that needs a different syntax but I am not
sure what.

Many thanks in advance.


Dr. George Patargias
Postdoctoral Research Fellow
Biomedical Research Foundation
Academy of Athens
4, Soranou Ephessiou
115 27
Athens
Greece

Office: +302106597568