Adding legend to plots created by for loops

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mr mo
mr mo 2017-12-4
编辑： mr mo 2017-12-4
l want to make a legend for my figure that was created by 3 for loops like mentioned below :
legend 1 : essential
legend 2 : less essential
legend 3 : most important
for P=1:K
% body
plot(.....,'bo');
end
for Z=N:T
%body
plot(....,'ro'):
end
for i=1:L
%body
plot(....,'ko'):
end
how can l manage my legend ? thank you

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回答（1 个）

KL
KL 2017-12-4
There are various ways. You can simply add the legend after you plot everything like,
legend({'essential','less essential','most important'})
or
you can add it while plotting inside the loop like
for P=1:K
% body
plot(.....,'bo',,'DisplayName','essential');
end
%other loops
and finally,
lgd = legend('show');
everything is explained here: https://www.mathworks.com/help/matlab/ref/legend.html
  1 个评论
mr mo
mr mo 2017-12-4
编辑：mr mo 2017-12-4
Actually I am ploting my dataset by this function https://www.mathworks.com/matlabcentral/fileexchange/15161-plotcube and I don't know how to add legend to this function. Thanks a lot.

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