min /max for arrays

min max extension into array.

Description

Gives minimum or maximum value and its indices [row column] for a 2D array. For a vector works same as regular min and max.

• MATLAB release: MATLAB 6.5 (R13)

[Amber Anderson]

Perfect. Simple program that does exactly what it says it does.

[Jan Simon]

Help existing, no H1-line, author and date mentioned, no check of inputs (fails for the empty matrix), program works.

Some ideas for improvements:
  [i,j]=find(A==-Inf); A(i,j)=NaN;
can be computed faster:
  A(A==-Inf)=NaN;
But I'd omit replacing -Inf completely, because there is no motivation to do this in a general function.

The exceptional handling of vectors is a drawback, because the user has to catch this case. With the following, the row and column indices are replied even for vectors and the empty matrix:
  [vall, L] = min(A(:)); s1 = size(A, 1);
  indd = [rem(L - 1, s1) + 1, floor(((L - 1) / s1) + 1];

Using the standard indentation scheme and just one command per line would increase the readability.