Accessing a Matrix through an indices vector

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Dukwhan
Dukwhan 2011-2-15
I have a linear vector of dimensional indices (A) and would like to access a single element from matrix M using this vector.
e.g.
A = [3,5,6];
FUNC(m,A); // equivalent to m(3,5,6);
Is there a method in MATLAB that replaces FUNC that allows this?

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Walter Roberson
Walter Roberson 2011-2-15
EDIT: fixed per Oleg's catch of my mistake:
t = num2cell(A);
m(t{:})
Or if you prefer one-line answers better:
subsref(m, struct('type', repmat({'()'},1,length(A)), ...
'value', num2cell(A)))
  2 个评论
Oleg Komarov
Oleg Komarov 2011-2-15
I think in the first case:
A = [3,5,6];
B = rand(10,10,10);
idx = num2cell(A);
B(idx{:})
Dukwhan
Dukwhan 2011-2-15
Yes, Oleg's version works well. Thank you both!

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