figure - plot, semilogx, loglog, ...

Hello,

A small question for you today :

% let us take x, y, some random values (> 0)

Are the following codes the same ?

plot(x, y);
set(gca, 'XScale', 'log');

and

semilogx(x, y);

?

plot(x, y);
set(gca, 'XScale', 'log');
set(gca, 'YScale', 'log');

and

loglog(x, y);

?

And so on...

If true, finally, what is the best pratice ?

Thanks !

Robin

Answer 1

[Jesús Zambrano]

Hi Robin,

Indeed, those codes give the same results.

If you know in advance that your plot should have one or both axes in log scale, I recommend you to use the semilogx or loglog commands: the execution time (if you have many data to be plotted in many figures) will be shorter, and your script will have less lines.

Best,

Jesús