How to get correlation for multiple columns

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

Answer 1

[jonas]

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)

Answer 2

[Csongor Báthory]

Thank you!

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