Index from accumarray with max/min

Question

I have a vector and a cell array (with repeating strings) with the same size. The cell array defines the groups. I want to find min/max values in the vector for each group.

Answer 1

When faced with a similar problem*, I came up with this solution:

• define the following function (in a .m file)

     function i=argmax(x)
     [~,i]=max(x);
     end
  

• then you can find the max locations as

     gridx = accumarray(grnum,grnum,[],@(i)i(argmax(value(i))) );
  

• and the max values as

     grvalue = value(gridx);
  

(*if I understand your problem correctly)