Function: col2diag

COL2DIAG  Move columns of a matrix to diagonals
  Usage:  cout=col2diag(cin);

  COL2DIAG(cin) will rearrange the elements in the square matrix cin so
  that columns of cin appears as diagonals. Column number n will appear
  as diagonal number -n and L-n, where L is the size of the matrix.

  The function is its own inverse.

  COL2DIAG performs the underlying coordinate transform for spreading
  function and Kohn-Nirenberg calculus in the finite, discrete setting.

Url: http://ltfat.github.io/doc/gabor/col2diag.html

See also: spreadop, spreadfun, tconv.

Package: ltfat