# How to change the scale of the x-axis & y-axis?

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Sultan Al-Hammadi on 22 Oct 2018
Answered: Aron Magesh on 5 Jul 2020
I have written a code which used to plot the spectrogram of a signal. This line was to get the spectrogram:
[s,f2,t] = spectrogram(xc,win,noverlap,FFT_LENGTH,fs,'yaxis');
Then I used imagesc to plot the spectrogram: imagesc(t,f2,20*log10(abs(s)));
Everything is working fine except I want to decrease the scale of the x-axis & y-axis. How can I do that?

#### 1 Comment

Decrease the scale from what to what?
doc xlim
doc ylim
change the axis limits, but I don't know what you mean by 'change the scale', it is very ambiguous. Do you mean change between linear and logarithmic?

Kevin Chng on 22 Oct 2018
you may use xlimit() or ylimit() to rescale your plot.

Show 1 older comment
Kevin Chng on 22 Oct 2018
Sultan Al-Hammadi on 23 Oct 2018
What I was trying to say is that how to change the scale for the thing circled by a red line [looks like steps] to make it looks like a straight line (not like steps)? (please see the attached spectrogram)
Kevin Chng on 24 Oct 2018
Try
h.figure
w = h.Position;
h.Position = [w(1) w(2) w(3)*1.5 w(4)]
Will it work for you?

Edited: Adam on 23 Oct 2018
doc interp2
is likely what you need if you want finer resolution to get rid of step-like features, but how was anyone to interpret that from you just keep repeating 'change the scale'? You need to be a lot more precise to get a faster answer.
Or since you are creating a spectrogram you could just use a finer discretisation of the frequencies and/or the times used to compute it.

Aron Magesh on 5 Jul 2020
For changing the axis scale use the following function:
for example low=10,high=100 and interval=5
set(gca,'xtick', 10:5:100)