Name

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      REPMAT

Purpose

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      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

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      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

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      Utilities

Calling Sequence

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      tiledMatrix = RepMat(matrix, ncol, nrow)

Auguments

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      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

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

Keywords

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    None.
   

Example

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        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

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      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.