Only the initial graph shows up

I'm trying to subplot 2 graphs in the same figure but I'm only getting the first graph. Need help trying to display both graphs

figure;
subplot(2, 1, 1)
plot(frames, Knee_A(:, 1), 'ro-', 'linewidth', 2); hold on;
plot(frames, Knee_A(:, 2), 'go-', 'linewidth', 2);
plot(frames, Knee_A(:, 3), 'bo-', 'linewidth', 2);
xlabel('Fluoroscopic Frame (30 FPS)');
ylabel('Angle (deg)');
legend('Flex/EXT', 'ADD/ABD', 'IR/ER', -1);
title([handles.SubjectName, '  ', handles.SubjectSide, '  ', handles.TrialName, ' Knee Angles']);

subplot(2, 1, 2)
plot(frames, Knee_V_tibia(:, 1), 'ro-', 'linewidth', 2); hold on;
plot(frames, Knee_V_tibia(:, 2), 'go-', 'linewidth', 2);
plot(frames, Knee_V_tibia(:, 3), 'bo-', 'linewidth', 2);
xlabel('Fluoroscopic Frames (30 FPS)');
ylabel('Translation (mm)');
% plot(frames, sum(StemV_cup.^2, 2).^.5, 'ko-', 'linewidth', 2);
title('Knee Translations')
legend('A/P', 'P/D', 'L/M', -1);

[Adam Danz]

Does anything show up where the second subplot should be? An empty axes?

Screenshot of the figure might be helpful, or attaching the data. Knee_V_tibia might be all NaNs or empty.

Answer 1

[Jon]

The problem is that you have an error in your line

Error using legend
Invalid argument. Type 'help legend' for more information.

Error in missingplot (line 11)
legend('Flex/EXT', 'ADD/ABD', 'IR/ER', -1);

Specifically the -1 at the end is not correct. So the script crashes before it ever makes the second subplot.

Note the line number this occurs in for your code is probably not 11, I added a few lines ahead of your script to make up some data. Anyhow, it is the line that has the legend command. Same thing for legend in second subplot

[Jon]

Also obviously your script is not called missingplot, that is just what I called my script that I saved using your code in order to debug it.

[Adam Danz]

@Jon good catch.

@Pete Tuchinda: Lesson learned - pay attention to error messages and always include the full copy-pasted error message in your question.

[Walter Roberson]

numbers as the final parameter to legend() used to indicate the plot position. I think -1 corresponded to the current "best" request

[Jon]

So using current MATLAB versions (R2022a)

legend('Flex/EXT', 'ADD/ABD', 'IR/ER','Location','best');

[PT]

@Jon Thank you! Got it to work now!

@Adam Danz Ok