Change how this plot looks

Is there a way to modify the attached plot in MATLAB, such that it contains another y-axis on the right hand side called "ADR" (where the range is 0-100)?

I would also like to change the x-axis scale to decrease from 0.9 to 0.2 instead of running from 1 to 8... I think I should be using xlim for this, but I don't know the syntax for xlim([max min]) such that the values decrease...

Finally, I would like to add a vertical line at the point where the two curves intersect. Is this possible?

Here is the plot so far: http://imageshack.us/photo/my-images/94/plotgm.png/

This is the code I'm using:

figure,
hold on
plot(HR_accuracy,'k-x','Color',[0 0 0],'linewidth',1.05)
plot(ADR,'k-o','Color',[0 0 0])
grid on
ylabel('HR Accuracy (%)')
xlabel('Threshold Values, t^{L} = 0.1')
l = legend('HR Accuracy (%)', 'ADR (%)',2);
set(l,'position',[0.76 0.65 0.1 0.1]);
hold off

Answer 1

[Sean de Wolski]

Sure:

1. doc plotyy
2. use the axes handles set the limits (doc axes (click on axes properties))
3. To plot a vertical line, find where the curves intersect (doc interp1 and doc fzero, if you don't know the intersection point). Then just user line (doc line) do draw it.

For Q2:

h = figure;
[ax] = plotyy(1:10,1:10,1:10,1:10.^1:10); %ax is 1x2 vectpr of axes handles

set(ax(1),'xlim',[0 4]); %set the xlims
set(ax(2),'xlim',[8 10]);

[Philip]

Thanks for your kind response.

plotyy seems to work well, but I can't seem to work out how I can use axis to set the limits... Would you mind giving me an example of this?

[Sean de Wolski]

yeah, axis was the wrong idea. You actually want axes! See edit.

[Philip]

That's perfect, thanks! Now I just need to work out how to do your 3rd suggestion...

[Philip]

I have now done the third part... Is it possible to annotate the line with some text?

[Sean de Wolski]

doc text, doc annotation, or just do it manually with the plottools (doc plottools)