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MathGroup Archive 2006

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Merge of Matrices

  • To: mathgroup at
  • Subject: [mg71098] Merge of Matrices
  • From: Robert Berger <rberger06 at>
  • Date: Wed, 8 Nov 2006 06:15:22 -0500 (EST)
  • Organization: EUnet Telekommunikationsdienstleistungs GmbH


I like to create from the four matrices A (N1 rows and N1 columns),
B (N1 rows and N2 columns), C (N2 rows and N1 columns),
D (N2 rows and N2 columns) a new matrix X of the form

      A  B
X =
      C  D

Once A & B and C & D have been merged, the first (A & B) and the 
second row (C& D) can be merged in that way by applying Join, which is 
not a problem but how can I merge A & B (and of course C & D) in
that way?

Kindly regards,

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