Accessing a Matrix through an indices vector
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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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Accepted Answer
Walter Roberson
on 15 Feb 2011
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 Comments
Oleg Komarov
on 15 Feb 2011
I think in the first case:
A = [3,5,6];
B = rand(10,10,10);
idx = num2cell(A);
B(idx{:})
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