How to adjust the y scale of a gain and phase plots to be consistent?

Question

Harout Markarian 2015-12-2

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编辑： Kiran 2015-12-30

I am working with around 330 conditions that require to plot gain and phase margins. when I overlay all conditions in one plot the y-axis of the phase diagram is (-180 to 180) which is what I want. However, when I plot each condition separately the phase margin (y-axis) is inconsistent. I want it to be within -180 and 180. can anyone shed some light on this issue?

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Answer 1

Kiran 2015-12-30

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编辑：Kiran 2015-12-30

在 MATLAB Online 中打开

As per my understanding, you want to fix the y-axis range from -180 to 180 for all plots.

Following code sets the axis limits for x-axis. Similarly you can modify for y-axis.

 x1 = linspace(0,10,100);
y1 = sin(x1);
ax1 = subplot(2,1,1);
plot(ax1,x1,y1)
x2 = linspace(0,5,100);
y2 = sin(x2);
ax2 = subplot(2,1,2);
plot(ax2,x2,y2)
axis([ax1 ax2],[0 10 -1 1])