Plot several graphs with one y-axis and another graph with a different y-axis on the same figure in Matlab

Question

I have three data sets and also a vector of their error. I want to plot them on the same figure, where the data sets are on the same y-axis (on the left) and the error is on the same figure but with a different axis (on the right).

The function plotyy allows to do it for 1 plot on each axis, how do I do it for several plots?

Answer 1

It is also possible to use plotyy() with multiple rows of y-values.

Following an example from the matlab help:

x = 0:0.01:20;
y1 = [200*exp(-0.05*x).*sin(x);
      300*exp(-0.04*x).*sin(x)];
y2 = [0.8*exp(-0.5*x).*sin(10*x);
      0.6*exp(-0.4*x).*sin(5*x)];
[AX,H1,H2] = plotyy(x,y1,x,y2);

set(get(AX(1),'Ylabel'),'String','Slow Decay') 
set(get(AX(2),'Ylabel'),'String','Fast Decay') 

xlabel('Time (\musec)') 
title('Multiple Decay Rates')

set(H1,'LineStyle','--')
set(H2,'LineStyle',':')

producing the following figure