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yyaxis, control aspect ratio

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Thomas Jacob
Thomas Jacob on 9 Jul 2020
Commented: Thomas Jacob on 13 Jul 2020
I'm trying to create a plot with 2 y-axis using yyaxis.
I would like to to set one of the two y-axis to have an aspect ratio of one in comparison with the x-axis.
I tried
set(gca,'DataAspectRatio',[1 1 1])
axis equal
but it throw the following error: "Warning: Only 'auto' DataAspectRatio is supported for axes with multiple coordinate systems."
Is there a way around this limitation?

Accepted Answer

Apoorv Singh
Apoorv Singh on 9 Jul 2020
  1 Comment
Thomas Jacob
Thomas Jacob on 13 Jul 2020
Thanks. Altough it did not work for me, it sent me on the right track. Indeed, if I resize the windows in which the figure appears, the proportion of the plot still changes.
I'm trying to plot an aerofoil with its pressure distribution. This is why the ratio y, x size is important.
I found a workaround in the following form:
ax = gca;
yyaxis left
plot(x , y_left)
ylim([-0.5 0.5])
xlim([0 1])
yyaxis right
plot(x , y_right)
ylim([-1.5 4])
Basically this is what comes from the link you gave me, but as I wrote if I resize the windows in wich the plot is made, the ratio is then broken.
The following line forces the plot to be a square, whatever the size of the window in which it is plotted.
ax.PlotBoxAspectRatio = [1 1 1];
Thanks for the help!

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