plotyyy

PLOTYYY - Extends plotyy to include a third y-axis. plotyyy(x1,y1,x2,y2,x3,y3)

Syntax:  [ax,hlines] = plotyyy(x1,y1,x2,y2,x3,y3,ylabels)

Inputs: x1,y1 are the xdata and ydata for the first axes' line
        x2,y2 are the xdata and ydata for the second axes' line
        x3,y3 are the xdata and ydata for the third axes' line
        ylabels is a 3x1 cell array containing the ylabel strings

Outputs: ax -     3x1 double array containing the axes' handles
         hlines - 3x1 double array containing the lines' handles

Example:
x=0:10; 
y1=x;  y2=x.^2;   y3=x.^3;
ylabels{1}='First y-label';
ylabels{2}='Second y-label';
ylabels{3}='Third y-label';
[ax,hlines] = plotyyy(x,y1,x,y2,x,y3,ylabels);
legend(hlines, 'y = x','y = x^2','y = x^3',2)

m-files required: none