Matlab plotyy and semilogx

Question

I need to plot two curves which share the same x axis but not the y. This can be achieved with plotyy.

However, the common x axis is to use the log scale, hence i would need to use semilogx.

I have tried the hold on, did not work.

My problem is that one can not combine plotyy with semilogx. Is there a solution to this vexing problem?

bla bla · Accepted Answer · 2013-10-01T03:49:30

Here's an example of how to do it:

t = 0:900; A = 1000; a = 0.005; b = 0.005;
z1 = A*exp(-a*t);
z2 = 2*A*exp(-a*t/2);
plotyy(t,z1,t,z2,'semilogx','semilogx');