Unable to Add Legend to Plot

Question

Kylen 2024-6-14

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2128776-unable-to-add-legend-to-plot

评论： Voss 2024-6-14

Hello All,

I'm writing a script to do some data processing and plotting. It came time to add a legend to one of my plots, but Matlab started throwing me errors. In frustration, I thought I was forgetting how to do something that I've done scores of times, so I opened up the Matlab documentation on Legends (https://www.mathworks.com/help/matlab/creating_plots/add-legend-to-graph.html). Even copy and pasting the example on the Help page (see below) results in an error.

figure

x1 = linspace(0,5);

y1 = sin(x1/2);

plot(x1,y1)

hold on

x2 = [0 1 2 3 4 5];

y2 = [0.2 0.3 0.6 1 0.7 0.6];

scatter(x2,y2,'filled')

hold off

legend('sin(x/2)','2016')

" Execution of script legend as a function is not supported:\\filepath\filepathxxxx

Error in legendError (line 20)

legend('sin(x/2)','2016') "

Anybody have an idea? Did scomething corrupt my version of Matlab? I'm running 2023b and haven't had any such issues before.

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Answer 1

Voss 2024-6-14

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https://ww2.mathworks.cn/matlabcentral/answers/2128776-unable-to-add-legend-to-plot#answer_1472086

Looks like you have a script called "legend.m" (located in "\\filepath\filepathxxxx") which is conflicting with running the built-in "legend.m". You should rename that script or remove its folder from the path.

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Kylen 2024-6-14

That was the problem for my troubleshooting script. My main code still kept erroring out. Closed and re-opened Matlab a few times with no luck. Finally restarted my computer and it worked again.

I had an error in my main code and it turns out I had a totally different error (due to my poor script naming), and both are now resolved.

Thank you.