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REPMAT

REPMAT

Name


      REPMAT

Purpose



      This program replicates a matrix or array in the style of
      the MATLAB RebMat command. The matrix or array is "tiled"
      in some integer number of columns and rows.

Author



      FANNING SOFTWARE CONSULTING
      David Fanning, Ph.D.
      1645 Sheely Drive
      Fort Collins, CO 80526 USA
      Phone: 970-221-0438
      E-mail: david@idlcoyote.com
      Coyote's Guide to IDL Programming: http://www.idlcoyote.com

Category



      Utilities

Calling Sequence



      tiledMatrix = RepMat(matrix, ncol, nrow)

Auguments



      matix: The matrix or array to be tiled.
     
      ncol: The number of columns in the tile.
     
      nrow: The number of rows in the tile.

Return Value



      tiledMatrix: If (xdim,ydim) is the size of the original 2D matrix, then the
                      output matrix is sized (ncol*xdim, nrow*ydim).

Keywords



    None.
   

Example


 
        IDL> matrix = Reform(Indgen(6) + 1, 3, 2)
        IDL> Print, matrix, FORMAT='(3I3)'
            1 2 3
            4 5 6
        IDL> Print, RepMat(matrix, 3, 2), FORMAT='(9I3)'
            1 2 3 1 2 3 1 2 3
            4 5 6 4 5 6 4 5 6
            1 2 3 1 2 3 1 2 3
            4 5 6 4 5 6 4 5 6
       

Modification History



      Written by David W. Fanning, 8 May 2009.
      Algorithm significantly improved by Ronn Kling, 4 August 2009.
      Added line to handle an input matrix with a trailing 1 dimension correctly. DJ 8 March 2011.



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