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How to get correlation for multiple columns

Asked by Csongor Báthory on 10 Nov 2018
Latest activity Answered by Csongor Báthory on 13 Nov 2018
As Matlab newbie I'm trying to get correlation of the first column itself and all the others, but can't handle.
Error: You cannot subscript a table using linear indexing (one subscript) or multidimensional indexing (three or more subscripts). Use a row subscript and a variable subscript.
My code:
X = table(Tmin.P1,Tmin.P2,Tmin.H1,Tmin.H2,Tmin.Z1,Tmin.Z2,Tmin.S1)
for i=1, k=0
i=i+1;
k=k+1;
B(k,:)=corr(X(:,1),X(:,i));
end

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2 Answers

Answer by jonas
on 11 Nov 2018
Edited by jonas
on 11 Nov 2018
 Accepted Answer

Why not just calculate the entire correlation matrix, and then extract the first row or col?
cm = corr(X)
c1n = cm(:,1)
If X is a table, then you need to write something like
cm = corr(X{:,:})
or
cm = corr(X.Variables)

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Answer by Csongor Báthory on 13 Nov 2018

Thank you!
More easier that I thinked. Get to know the basics :)

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