Only the initial graph shows up

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PT on 5 Aug 2022
Commented: PT on 6 Aug 2022
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
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);
  1 Comment
Adam Danz
Adam Danz on 5 Aug 2022
Edited: Adam Danz on 5 Aug 2022
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.

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Accepted Answer

Jon on 5 Aug 2022
Edited: Jon on 5 Aug 2022
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
PT on 6 Aug 2022
@Jon Thank you! Got it to work now!

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