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INDICES

INDICES

Purpose


  This procedure creates coordinate arrays for each dimension in an
  input array. The coordinate arrays have the same shape as the
  input, and the i'th pixel in those arrays denote that dimension's
  coordinate value at the i'th location in the input

Inputs


  array: An array to generate indices for

Keyword Parameters


  center: Optionally, set to an array with ndim elements, where ndim
  is the dimensionality of array. The output indices will be centered
  around the coordinates of center.

Outputs


  x: The coordinate array for dimension 1
  y: The coordinate array for dimension 2
  z: The coordinate array for dimension 3
  a: The coordinate array for dimension 4
  b: The coordinate array for dimension 5
  c: The coordinate array for dimension 6
  d: The coordinate array for dimension 7
  e: The coordinate array for dimension 8

Examples


  array = findgen(3,3)
  indices, array, x, y
  print, x
  0 1 2
  0 1 2
  0 1 2
  print, y
  0 0 0
  1 1 1
  2 2 2

Modification History


  April 2010: Written by Chris Beaumont
  July 29 2010: Now handles 1D arrays correctly. cnb.
  Mar 15 2011: Added parameter checking and center keyword. cnb.
  June 21 2011: Fixed bug when center=0. cnb.
  June 23 2011: Optimized for speed and memory (10x speedup). cnb.



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