Is there a simple way to omit legend entries?

Question

Srh Fwl 2021-6-16

0
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https://ww2.mathworks.cn/matlabcentral/answers/857985-is-there-a-simple-way-to-omit-legend-entries

评论： Ioannis Matthaiou 2022-3-18

I have plotted figures where there are numerous diagonal reference lines. I only need one line to appear in the legend. However, none of the solutions I have found so far online seem to work for getting rid of the unnecessary lines. The best I can do so far (as shown in my example figure) is to remove the text "Reference line" but not the associated line. Can anyone offer advice?

I have made my legend by doing this:

refline4=plot(xref4,yref4,'Color',[0.4 0.4 0.4],'LineStyle', '-','Linewidth',0.5,'DisplayName','Reference line'); hold on

Then:

lgd=legend('Location','northwest');

When I delete

DisplayName','Reference line',

I don't get the test "Reference line" for a particular line, but I do get the line as shown in my figure. Is there a way to eliminate the lines in a way that works with the code I have? I have a lot of it and it would be very onerous to have to collect the legend labels in lists (and leave the items I don't want out of the lists) as shown in another solution I saw online. Thank you.

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Answer 1

Jonas 2021-6-16

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you can do your normal graph plotting and one of your reference lines and then you can set the auto update property of the legend to off. after that you can plot the other reference lines.