How to plot a graph for three variables?

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Anandh
Anandh 2011-10-15
Hi,
I have three variables x,y1 and y2. I would like to plot a graph with x axis and two y axis as y1 and y2. How to do this?please reply. Thanks.

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回答（1 个）

Ali Isik
Ali Isik 2011-10-15
My solution is using both left and right of x axis to plot y axises. To do it, you should use plotyy() function, Here is an example code;
x = 0:0.01:20;
y1 = 200*exp(-0.05*x).*sin(x);
y2 = 0.8*exp(-0.5*x).*sin(10*x);
plotyy(x,y1,x,y2);

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