Define a new binary operator in MATLAB?
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Hi,
I wondered whether it is possible to define a new, binary operator in MATLAB. The thing is, I need a new operator to "multiply" two matrices in an uncommon way, like this:
A = [.5 .5 0; 0 1 0; 0 .5 .5];
B = [.5 .5 0; 0 1 0; 0 .5 .5];
RowsA = size(A,1);
ColsA = size(A,2);
RowsB = size(B,1);
ColsB = size(B,2);
C = zeros(RowsA*RowsB, ColsA*ColsB);
for i = 1:RowsA
for j = 1:ColsA
C( 1+(i-1)*RowsB:i*RowsB, 1+(j-1)*ColsB:j*ColsB ) = A(i,j) * B;
end
end
Instead of making a function and calling C = myfunction(A,B), I'd like to use C = A # B, with # the new operator (or perhaps another symbol if this is not possible).
采纳的回答
Jan
2012-4-24
0 个投票
You cannot define a new operator in Matlab using non-standard symbols like #.
While using myFunction(A, B) is a perfect solution already, you can create a new object type for the matrices and overload the standard operators. E.g. for A+B the code plus(A, B) is called implicitly. But the restriction to standard operator characters +-*/\ and [] will reduce the readability. Therefore I prefer myFunction().
2 个评论
Pieter
2012-4-24
Walter Roberson
2012-4-24
That would be the method named "mpower", and you would have the same restrictions as Jan noted -- i.e., you would have to use a different object type rather than simple number matrices.
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