Is there an equivalent to CLEGENDM for contour plots in MATLAB (R2013a)?

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MathWorks Support Team 2013-10-25

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回答： MathWorks Support Team 2013-10-25

How can I add a legend to my contour plot? Why is CLEGENDM only available as part of the Mapping Toolbox? This function would save lots of time when creating a legend for a contour plot, and having a similar feature in base MATLAB is something most users would like to see.

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Answer 1

MathWorks Support Team 2013-10-25

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There is no equivalent to CLENGENDM in base MATLAB. Here is an example that shows how you can add a legend to a contour plot:

clc
clear all
close all
x     = -3:0.125:3;
y     = -3:0.125:3;
[X,Y] = meshgrid(x,y);
Z     = peaks(X,Y);
v     = -2 : 1 : 2;
figure
contour(X,Y,Z,v);
leg   = arrayfun(@num2str,v,'UniformOutput',false);
hc    = get(gca,'children');
c     = {leg};
legend(get(hc,'Children'),'String',c{:})