CODEWITHSUNDEEP
functional-programmingoctave
Elias Baryshnikov
Elias Baryshnikov

Reputation: 13

Octave map over matrix with row and column indexes

So basically I'm looking for something like arrayfun(@(value, rowIdx, colIdx), matrix).

I need to create one matrix from another based on it's values and their indexes, is there a way to avoid for-loops?

Upvotes: 1

Views: 370

Answers (1)

Suever
Suever

Reputation: 65460

You can create matrices for the row and column indices using meshgrid and the size of your matrix. You can then use all three of these matrices to calculate the result.

[col_index, row_index] = meshgrid(1:size(matrix, 1), 1:size(matrix, 2));

% Now do some calculations using that
new_matrix = matrix + row_index * col_index;

Upvotes: 1

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