[~,i]=max(y); what does it mean in matlab

can i know the meaning of this command "[~,i]=max(y);" in matlab??

Answer 1

[Mark Sherstan]

Your answer can be found here, I copied and pasted it below for your convience:

The ~ represents an output that is discarded. It is essentially equivalent to:

[dummy,idx]=min(dists);
clear dummy

For this example, the code wants to work with the index of the minimum value, not the value itself, so the minimum value that is returned is discarded and only the index is retained.

http://www.mathworks.com/help/matlab/matlab_prog/ignore-function-outputs.html?searchHighlight=tilde