Heat Map Histogram with gnuplot

Question

I'm working in Gnuplot, and I have a graph looking roughly like the following:

Say

If I want to have the color of the line change color depending on the curves's values, what's the most straightforward way to make that happen?

Thanks!

score 2 · Accepted Answer · edited May 23 '17 at 12:01

2

Does the answer to this question help?

For example:

plot "./file.dat" u 1:2:2 with lines palette

where file.dat contains your data, the first column is the x axis and the second column is the y axis.

The repetition of the 2 indicates that the second column is also used for the colour.

edited May 23 '17 at 12:01

Community

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answered Jan 05 '11 at 16:53

Tom

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score 0 · Answer 2 · answered Jan 04 '11 at 23:22

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I know there is a function (which i use quite a bit) on the matlab file exchange by Ken Garrard called plot3k that has this functionality that you're looking for. Mayhapes you could have a look at the implementation for hints for a gnuplot port.

answered Jan 04 '11 at 23:22

brown.2179

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score 0 · Answer 3 · answered Oct 07 '11 at 07:46

Maybe these three articles is helpful:

http://gnuplot-surprising.blogspot.com/2011/09/gradient-colored-curve-in-gnuplot0.html

http://gnuplot-surprising.blogspot.com/2011/09/gradient-colored-curve-in-gnuplot1.html

http://gnuplot-surprising.blogspot.com/2011/09/gradient-colored-curve-in-gnuplot2.html

Heat Map Histogram with gnuplot

3 Answers3