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

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.

[Bruno Luong]

sum along the 2nd dimension

You can also take a look at the reference document

[Simson Hutagalung]

Thank you very much, sir.

Answer 1

[Les Beckham]

That tells the sum() function to sum along the rows.

See the documentation for sum here

[Simson Hutagalung]

Thank you very much, sir.

[Les Beckham]

You are welcome. Please accept the answer if it helped you. Thanks.