If there is a coding "sqrt(sum(​data(:,1:e​nd).^2,2))​" , so what is the function number 2 after comma?

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Hello everyone, i wanna ask, what is the function of number 2 after comma in coding "sqrt(sum(data(:,1:end).^2,2))"?
Thank you.

Accepted Answer

Les Beckham
Les Beckham on 4 Aug 2022
That tells the sum() function to sum along the rows.
See the documentation for sum here

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