MATLAB: What mean normr in matlab?

MATLAB

what mean normr in matlab??

That is a function in the Neural Network Toolbox that normalizes the rows of the matrix to have l2 norm.

For example:

X = randn(10,4);
Y = normr(X);

Now if you check:

for kk = 1:size(Y,1)
 norm(Y(kk,:),2)
end

They all have unit norm.

use cart2pol function

You can open the m-file (type norm.m) and find something like this:

[mr,mc]=size(m);
if (mc == 1)
  n = m ./ abs(m);
else
  n=sqrt(ones./(sum((m.*m)')))'*ones(1,mc).*m;
end

That's all ...