sort2li

Transforms permutation indices from sort to linear indices

Description

This function transforms the indices output from sort into a matrix of linear indices so that parallel sorting is simplified. If no dimension argument is supplied, sort2li will operate on the first non-singleton dimension just like sort will do without a dimension argument.

Usage: li=sort2li(sort_indices)
       li=sort2li(sort_indices,dim)

Examples:
      
Sort a and then sort the elements of b exactly the same way.

  b=1./a;
  [c,i]=sort(a)
  d=b(sort2li(i))
  isequal(c,1./d)

• MATLAB release: MATLAB 7.5 (R2007b)
• Other requirements: Not tested on pre-7.