Adding a legend to a Graph in Matlab

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Arham Mini
Arham Mini 2021-11-10
回答： Bjorn Gustavsson 2021-11-10
I'd like to add a legend in my Graph without dividing it in several graphs (which is the suggestion made in Legend in a Graph - MATLAB Answers - MATLAB Central (mathworks.com)).
My graph is this one:
I've generated it using plot() and highlight() (for different shapes and colours of nodes of interest). I'd like to generate a legend with the different shapes and colors, because they represent different groups of people but they are part of the same graph. I tried using text() but it's not what I'm looking for as I can't generate a legend with the symbols and colors.

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回答（1 个）

Bjorn Gustavsson
Bjorn Gustavsson 2021-11-10
Would something like:
legend([h(idx1(1)),h(idx1(2)),h(idx3(1))],...
'label1','label2','label3')
work for this case. Here I have set the output from your call to plot to h and the three (?) different highlights to be done with something like this:
highlight(h,idx1,etc..)
highlight(h,idx2,etc..)
highlight(h,idx3,etc..)
HTH

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