How to show multiple lines in the legend?

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Wiqas Ahmad
Wiqas Ahmad 2021-4-12
回答： Cris LaPierre 2021-4-12
The legend shows only one value of EC which is the last one as shown in fig, however my EC has 10 values and I'd lke to display all of them in the legend one-byone in a column. The EC vector and syntax for the lenegd I'm using can be seen
EC = [0.0052 0.0078 0.0104 0.0130 0.0156 0.0182 0.0208 0.0234 0.0260 0.0286];
...
for j = 1:length(EC)
...
lgd=legend(['EC=',num2str(EC(j)),'m^{-1}']);
...
end

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回答（1 个）

Cris LaPierre
Cris LaPierre 2021-4-12
Ran in:
You are replacing the legend each time. Use the loop to build up your labels, but don't atually create the legend until you exit the for loop.
Another option is to use the 'DisplayName' name value pair in your plot command.
EC = [0.0052 0.0078 0.0104 0.0130 0.0156 0.0182 0.0208 0.0234 0.0260 0.0286];
for j = 1:length(EC)
plot(rand(1,5),'DisplayName',['EC=',num2str(EC(j)),'m^{-1}']);
hold on
end
hold off
legend
I'm not sure you want to include a lenged label for every line in your plot. I don't see how that will clarify anything.

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