2D color plot with 3 vectors
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Zhiting
il 28 Mar 2012
Commentato: Riley Weatherholt
il 23 Feb 2021
I have three vectors: x, y and z. Each (x(i), y(i)) coordinate corresponds to one z(i). I want to plot a 2D plot with x, y as axes and z denotes the colors. What should I do? Thanks a lot.
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Richard
il 28 Mar 2012
you could use pcolor(x,y,z). If you need further instruction let me know.
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Walter Roberson
il 28 Mar 2012
image() would be better than pcolor().
pcolor() and image() would assume that you have a full matrix of data, but the user only has vectors -- scattered points.
Thomas
il 28 Mar 2012
Just adding if you need a 3d graph:
dotsize=25
scatter3(x(:), y(:), z(:), dotsize, z(:), 'filled')
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