How to write ||a-p||^2 in matlab code

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Soumili Sen 2021-3-12

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https://ww2.mathworks.cn/matlabcentral/answers/770438-how-to-write-a-p-2-in-matlab-code

评论： Soumili Sen 2021-3-13

采纳的回答： Bjorn Gustavsson

Hello all,

I have two variables 'a' and 'p Now I want to express this expression as

f=||a-p||^2;

What will be the matlab code for this expression?

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KSSV 2021-3-12

Read about norm

Soumili Sen 2021-3-13

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ok thanks.

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Bjorn Gustavsson 2021-3-12

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在 MATLAB Online 中打开

Have a look at the norm function and its help and documentation. If your a and p are [n x m] arrays and you want to get ||a-p||^2 for each row you might do something like this:

n_ap = sum((a-p).^2,2);

adapt to handle complex values if necessary.

HTH

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Soumili Sen 2021-3-13

Thank you.

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