How to make a log plot in matlab

Question

Is it possible to make a plot in matlab that does not actually take the logs of the values? I\'m plotting wide ranges of values and when I try to make a log plot of them, th

Answer 1

Yes, it is possible. Use the loglog command.

The example from the Mathworks website:

x = logspace(-1,2);   % generate a sequence of points equally spaced logarithmically
loglog(x,exp(x),'-s')
grid on

If you do not want both axes to be log scale, use semilogx or semilogy.

Answer 2

Alternatively, set(gca,'XScale','log') if you have your plot already.

Answer 3

So, you want to plot liner data on logarithmic axes? You can exponentiate you values before using the log plot. This way the point p=(10,3) will plot at the x=10 position.