Why is nothing is being plotted when I run this?

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Liam
Liam on 28 Mar 2025
Answered: Karanjot on 9 Apr 2025
r = randn(1000, 1);
r_DCT = dct(r);
plot(r_DCT, 'o-')
  3 Comments
Liam
Liam on 28 Mar 2025
Do you know why it doesnt plot on MATLAB itself?
Torsten
Torsten on 28 Mar 2025
Edited: Torsten on 28 Mar 2025
Do you know why it doesnt plot on MATLAB itself?
I can't see how MATLAB is configured on your computer. Don't you get an error message ? Maybe you don't have the Signal Processing Toolbox licenced and/or installed which is necessary for using "dct".

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Answers (1)

Karanjot
Karanjot on 9 Apr 2025
Hi Liam,
This is the default behaviour for MATLAB scripts or '.m' files. If you want the figure to show up in line with the code, you can consider using a MATLAB live script instead.

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