plotyy with 4 outputs

Folks,

How do I plot 4 outputs on one 2d plot but with one of the outputs on the 2nd y axis? The plotyy command requires 4 vectors to represent x1,y1 and x2,y2 but I would have x1,y1, x2,y2,x3,y3,x4,y4 with x1=x2=x3=x4

Thanks in advanced. B

Answer 1

[David Sanchez]

Try something like this:

plot(x1,y3,'m',x1,y4,'r')
hold on
plotyy(x1,y1,x1,y2)
hold off

Answer 2

[bugatti79]

Hi David,

That works, thanks. Where do I define the colour and legend for the variable on the 2nd y axis?

Thanks