MATLAB Answers

How to show partial legend in figure

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Aravin
Aravin on 5 Jan 2012
Commented: tuncay olcer on 10 Nov 2020
Dear All,
I just want to show the partial part of my legend in Figure.
For example.
plot([1:10],'Color','r','DisplayName','This one');hold on;
plot([1:2:10],'Color','b','DisplayName','This two');
plot([1:3:10],'Color','k','DisplayName','This three');
Lets say I want to display only Last two or First two or first and last legend titles with proper colors.
Could anyone suggest plz.

Accepted Answer

Dr. Seis
Dr. Seis on 5 Jan 2012
To take your first example:
h = zeros(1,3);
h(1) = plot([1:10],'Color','r','DisplayName','This one');hold on;
h(2) = plot([1:2:10],'Color','b','DisplayName','This two');
h(3) = plot([1:3:10],'Color','k','DisplayName','This three'); hold off;
legend(h(2:3)); % Only display last two legend titles
If you didn't have "DisplayName", then you would have to manually add these string to the legend:
legend(h(2:3),'This two','This three');

More Answers (3)

Jon
Jon on 13 Apr 2017
Edited: Jon on 13 Apr 2017
Posting this here because none of the above helped me. If you don't have control of how the figure was plotted (i.e. it was buried in someone else's code), you can pull it out of the figure's children. So if you have 6 graphs and only want the legend to display a certain two, then write:
f=get(gca,'Children');
legend([f(2),f(6)],'second graph','sixth graph')
  9 Comments
tuncay olcer
tuncay olcer on 10 Nov 2020
This is the perfectly working approach, Thanks Jon!

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the cyclist
the cyclist on 5 Jan 2012
Here's one way:
h1=plot([1:10],'Color','r','DisplayName','This one');hold on;
h2=plot([1:2:10],'Color','b','DisplayName','This two');
h3=plot([1:3:10],'Color','k','DisplayName','This three');
legend([h1 h3],{'Legend 1','Legend 3'})
  1 Comment
Sean de Wolski
Sean de Wolski on 5 Jan 2012
+1. This should probably be added to the FAQ.

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Patrick Kalita
Patrick Kalita on 5 Jan 2012
the cyclist's solution of passing plot handles to the legend command is good. But if you're feeling adventurous, you can also use the plot's Annotation property. It is described in the documentation here. For example:
h(1) = plot([1:10],'Color','r','DisplayName','This one');hold on;
h(2) = plot([1:2:10],'Color','b','DisplayName','This two');
h(3) = plot([1:3:10],'Color','k','DisplayName','This three');
set( get( get( h(2), 'Annotation'), 'LegendInformation' ), 'IconDisplayStyle', 'off' );
legend show

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