Access element of ND array specified by another array?
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I have a N1 x N2 x N3 dimension Tensor T. Plus I have a 1 x 3 array a = [a1 a2 a3]. How do I access element T(a1,a2,a3). Is there any way to do this for N dimension.
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Walter Roberson
2018-6-7
编辑：Walter Roberson
2018-6-7
acell = num2cell(a);
T(acell{:})
There are also ways to calculate the location as a linear index based upon size(T)
Ts = size(T):
La = length(a);
Ts(end+1:La) = 1;
idx = a(1) + sum((a(2:end)-1) .* cumprod(Ts(1:La-1)))
T(idx)
... if I didn't miss something.
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