Combine two MATLAB figures with two different y axes

Hi, I have such a similar problem, like describes in the followink, link but using this code https://de.mathworks.com/matlabcentral/answers/525423-combine-two-matlab-figures-with-two-y-axes

results in such too small range of visualized data of the file "VR Acc x".

x-axis of the figures do not matter, they represent same timeline

Can anybody please help me that the range can be set to a nice display of this small data range of the y-axis?

That acceleration data an gyroskopic data iare shown within their plausible ranges?

[Les Beckham]

The figures that you attached are not showing the two sets of data on the same plot (with two y axes) as you seem to want, based on the link you show.

Can you show the code you have written to make the desired plot, and the result? Also, what is it that you don't like about the result?

[Belinda]

Sorry I don't have access to the code, only the given figures :(

Answer 1

[Sulaymon Eshkabilov]

Is this what you want to obtain:

fig1 = openfig('qualitatixe Analyse VR ACCx_31_35sek.fig');
fig2 = openfig('qualitatixe Analyse VR gyr z_31_35sek.fig');

ax1 = findobj(fig1, 'type', 'axes');
yyaxis(ax1, 'left');

line1L = ax1.Children;
ax2 = findobj(fig2, 'type', 'axes');
yyaxis(ax2, 'left');

line1R = ax2.Children;
fig = figure;
ax = axes();
yyaxis(ax, 'left');
LineL = copyobj(line1L, ax);
ylabel('G [9,81m/s²] ')
yyaxis(ax, 'right');
LineR = copyobj(line1R, ax);
ylabel('Winkeländerung [dps]')
yyaxis(ax, 'left');
ax.YLim = [-4.65 4.65]; % change Ylimits of left axes if necessary
yyaxis(ax, 'right');
ax.YLim = [-225 225];   % change Ylimits of right axes if necessary
xlim([0, 120])          % change Xlimits if necessary 
legend('G ', 'Winkeländerung', 'Location', 'Best')
grid on

[Sulaymon Eshkabilov]

Also, it can be viewed by adjusting xlim() - see last figure:

fig1 = openfig('qualitatixe Analyse VR ACCx_31_35sek.fig');
fig2 = openfig('qualitatixe Analyse VR gyr z_31_35sek.fig');

ax1 = findobj(fig1, 'type', 'axes');
yyaxis(ax1, 'left');

line1L = ax1.Children;
ax2 = findobj(fig2, 'type', 'axes');
yyaxis(ax2, 'left');

line1R = ax2.Children;
fig = figure;
ax = axes();
yyaxis(ax, 'left');
LineL = copyobj(line1L, ax);
ylabel('G [9,81m/s²] ')
yyaxis(ax, 'right');
LineR = copyobj(line1R, ax);
ylabel('Winkeländerung [dps]')
yyaxis(ax, 'left');
ax.YLim = [-4.65 4.65]; % change Ylimits of left axes if necessary
yyaxis(ax, 'right');
ax.YLim = [-225 225];   % change Ylimits of right axes if necessary
xlim([0, 120])          % change Xlimits if necessary 
legend('G ', 'Winkeländerung', 'Location', 'Best')
grid on

fig = figure;
ax = axes();
yyaxis(ax, 'left');
LineL = copyobj(line1L, ax);
ylabel('G [9,81m/s²] ')
yyaxis(ax, 'right');
LineR = copyobj(line1R, ax);
ylabel('Winkeländerung [dps]')
yyaxis(ax, 'left');
ax.YLim = [-4.65 4.65]; % change Ylimits of left axes if necessary
yyaxis(ax, 'right');
ax.YLim = [-225 225];   % change Ylimits of right axes if necessary
xlim([0, 20])           % change Xlimits if necessary 
legend('G ', 'Winkeländerung', 'Location', 'Best')
grid on

[Belinda]

thank you for your help!I spend so many hours with trying to fix my problem and this code runs so easy !

[Sulaymon Eshkabilov]

Most welcome! Glad to be of some help :)

Answer 2

[William Rose]

@Belinda,

I packaged the raw data into a single .mat file, attached. I will make two figures. Figure 1 has two panels. Figure 2 has right and left y-axes.

load('Belinda');
figure
subplot(211); plot(x1,y1,'-r'); xlim([86 90]); grid on
subplot(212); plot(x2,y2,'-g'); xlim([86 90]); grid on

figure
yyaxis left; plot(x1,y1,'-r'); 
xlim([86 90]); ylim([-5 5]); grid on
set(gca, 'YColor','r')
yyaxis right; plot(x2,y2,'-g'); 
xlim([86 90]); ylim([-250 250])
set(gca, 'YColor','g')

Good luck.

[Belinda]

thank you, this code works great!

[William Rose]

@Belinda, you are welcome.