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Making a legend from a cell array

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Eliah Verbeemen
Eliah Verbeemen 2018-5-22
关闭： Eliah Verbeemen 2018-5-23
I have a cell array with an unknown amount of numbers in. I used the following code to make a legend. Can someone please tell me why only the first graph has a legend?
str = ('');
komma = (',');
for dd= 1:z
str= strjoin (num{1,dd},str);
if dd<z
str = {str};
str = strjoin(str,komma);
else
end
end
end

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回答（1 个）

Ameer Hamza
Ameer Hamza 2018-5-22
You are trying to join all the character into one variable. For legend, you need to create a cell array. If you want to create multiple legends from numbers, create them like this
z = 5;
str = num2cell(repmat(' ', 1, z));
for dd= 1:5
str{dd}= num2str(dd);
end
Then use
legend(str)
to add the legend to the figure.

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