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Converting C++ to MATLAB: statement

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Hans123 on 15 Jun 2020
Commented: dpb on 15 Jun 2020
I am trying to convert the below C++ line to MATLAB, any help appreciated
A[index1d(x,y,z)] += B[i]*W;


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Accepted Answer

dpb on 15 Jun 2020
A[index1d(x,y,z)] = A[index1d(x,y,z)] + B[i]*W;
in C/C++
Presuming conformance of dimensions, etc.,
A(index1d(x,y,z)) = A(index1d(x,y,z)) + B(i)*W;
in MATLAB replacing the braces.


James Tursa
James Tursa on 15 Jun 2020
Since C++ is 0-based indexing and MATLAB is 1-based indexing, you will probably need to add 1 to your indexes in the above conversion, either explicitly or as part of upstream code.
dpb on 15 Jun 2020
James -- good catch! I meant to add that caveat as well but can be a real bugger to convert if forget or depending just how indices were used...

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