MATLAB: What's [Y,I]=max(AS,[],2);?

Question

I just started matlab and need to finish this program really fast, so I don\'t have time to go through all the tutorials.

can someone familiar with it please explain

Answer 1

note the apparent wrinkle in the matlab convention; there are a number of builtin functions which have signature like:

xs = sum(x,dim)

which works 'along' the dimension dim. max and min are the oddbal exceptions:

xm = max(x,dim);     %this is probably a silent semantical error!
xm = max(x,[],dim);  %this is probably what you want

I sometimes wish matlab had a binary max and a collapsing max, instead of shoving them into the same function...