I want to index across multiple dimensions using a vector, as opposed to comma notation
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E.g.
I have a matrix A. This matrix will have a different number of dimensions depending upon what is input to my function.
I want to be able to use a vector(i.e. IndexingVector = [2 3 4 5]) to get the information I need:
A(IndexingVector) would be the same as saying A(2,3,4,5).
This means that if A happens to have a different number of dimensions when the function has different inputs, I could still use IndexingVector to get the information I need.
Thanks
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Stephen23
le 29 Mar 2017
Modifié(e) : Stephen23
le 29 Mar 2017
Lets first create some fake data:
>> A = randi(9,4,3,2); % the data
>> V = [3,2,1]; % the indices in a vector
>> C = num2cell(V);
>> A(3,2,1) % writing it out
ans =
7
>> A(C{:})
ans =
7
>> A(sub2ind(size(A),C{:}))
ans =
7
>> subsref(A,struct('type','()','subs',{num2cell(V)}))
ans =
7
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