MATLAB: Should I use “bsxfun” or implicit expansion

bsxfunexpansionimplicit

Which one is better, "bsxfun" or implicit expansion whenever possible?

Best Answer

It is now recommended that you replace most uses of bsxfun with direct calls to the functions and operators that support implicit expansion. Compared to using bsxfun, implicit expansion offers faster speed of execution, better memory usage, and improved readability of code.

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MATLAB: How to simplify polynomial expansion

Maple pretty quickly calculates it as the ratio of a cubic divided by a quartic. The coefficients involved are quite large.

You can get very long coefficients such as that if you input floating point numbers, as by default MuPad converts floating point numbers in to rational values. For example, in a problem earlier today someone wanted to use 0.707 which would have led to a _much _messier answer than what the probable value was, 1/sqrt(2)

I have confirmed that the numerator and denominator of the ratio do not have any roots in common (not even close), so it is not possible to reduce the expression to a polynomial instead of a ratio of polynomials.

MATLAB: How to used the combination between “bsxfun” and “operator AND”

B = logical(randi([0 1], 15, 1));
C = randi([0 5], 1, 10, 'uint8');
bsxfun(@and, C == 0, ~B)

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Related Solutions

MATLAB: How to simplify polynomial expansion

MATLAB: How to used the combination between “bsxfun” and “operator AND”

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