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How to pass the same function to different columns?

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I would like to pass the same function to all the columns of an object.
I tried this code but it doesn't work
for j = 1:3
autocorr(VAR.res(:,j))
end
where basically I wanted to tell MATLAB "compute autocorrelation for all the 3 columns of VAR.res".
What did I do wrong?
Thanks

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Rik
Rik 3 Apr 2020
That is not an internal Matlab function, unless you meant autocorr. Also, do you want to treat each call as totally separate, or do you want to correlate those columns in some way as well?
Armando MAROZZI
Armando MAROZZI 3 Apr 2020
Yes, sorry, just edited. I want to treat each call as totally separate

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Rik
Rik 3 Apr 2020
You need to specify the target axes, otherwise the function will use gca for each call, so that will be the same axes.
figure(1),cfl(1)
n_cols=size(VAR.res,2);
for col = 1:n_cols
ax=subplot(1,n_cols,col);
autocorr(ax,VAR.res(:,col))
end

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Armando MAROZZI
Armando MAROZZI 3 Apr 2020
thank you very much! Got it now! thanks again

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