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Why legend is not displayed?

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Sadiq Akbar
Sadiq Akbar on 5 Feb 2023
Commented: Sadiq Akbar on 5 Feb 2023
How can I display the legend at my desired side outside the figure? I run the following code but it doesn't work:
clear all; close all; clc
one=rand(100,1);
fitness2sn0=one';
one=rand(100,1);
fitness2sn5=one';
one=rand(100,1);
fitness2sn10=one';
one=rand(100,1);
fitness2sn15=one';
fitness2sn0=sort(fitness2sn0,'descend');
fitness2sn5=sort(fitness2sn5,'descend');
fitness2sn10=sort(fitness2sn10,'descend');
fitness2sn15=sort(fitness2sn15,'descend');
h1=boxplot([fitness2sn0; fitness2sn5; fitness2sn10; fitness2sn15].');
set(h1,{'linew'},{2})
grid
Ax = gca;
Ax.YLabel.String = '\bf fitness';
Ax.YScale = 'log';
Ax.XTickLabel = compose('2sn%d',[35 45 55 65]);
Ax.YLim = [1E-3 1e0];
title('\bf Fitness')
set(gca,'linew',2)
lgd = legend('35dB', '45dB','55dB','65dB')
lgd.Location = 'southoutside';

Accepted Answer

Simon Chan
Simon Chan on 5 Feb 2023
and do the modification like the following:
one=rand(100,1);
fitness2sn0=one';
one=rand(100,1);
fitness2sn5=one';
one=rand(100,1);
fitness2sn10=one';
one=rand(100,1);
fitness2sn15=one';
fitness2sn0=sort(fitness2sn0,'descend');
fitness2sn5=sort(fitness2sn5,'descend');
fitness2sn10=sort(fitness2sn10,'descend');
fitness2sn15=sort(fitness2sn15,'descend');
colors = [1 0 0; 0 0.5 0; 0.5 0 0; 0 0 0.5]; % Add different color
h1=boxplot([fitness2sn0; fitness2sn5; fitness2sn10; fitness2sn15]','Colors',colors);
set(h1,{'linew'},{2})
grid
Ax = gca;
Ax.YLabel.String = '\bf fitness';
Ax.YScale = 'log';
Ax.XTickLabel = compose('2sn%d',[35 45 55 65]);
Ax.YLim = [1E-3 1e0];
title('\bf Fitness')
set(gca,'linew',2)
hChildren = findall(gca,'Tag','Box');
lgd = legend(hChildren([4 3 2 1]), {'35dB','45dB','55dB','65dB'});
lgd.Location = 'southoutside';
  11 Comments
DGM
DGM on 5 Feb 2023
Simon's answer is the core of any solution to this problem, so it's appropriate that he gets credit. While it's sometimes unfortunate that comments can't be upvoted for emphasis, your comment is verification that it helped. That much is sufficient for my needs, and it should help any future readers with the same problem.
Sadiq Akbar
Sadiq Akbar on 5 Feb 2023
Thanks a lot for your kind words dear DGM. Well said.

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