MathGroup Archive 1993

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Vectorising Matrices

  • To: mathgroup at
  • Subject: Vectorising Matrices
  • From: robt at (Rob Trevor)
  • Date: Tue, 21 Sep 1993 16:45:01 +1000

So I don't re-invent the wheel...has anyone written a small package for
vectorising matrices? 

I've written the 'vec' function to stack the rows of a matrix into a column
vector, and the 'vech' function to stack the upper triangular part of a
symmetric matrix into a column vector.  I'm just working out how to reverse
these operations and thought I'd check if someone had already done
something along these lines.




Rob Trevor  Associate Professor, Australian Graduate School of Management
            University of New South Wales
            PO Box 1, Kensington, NSW, AUSTRALIA    2033

Internet:  robt at  or  R.Trevor at

VOICE: +61 (2) 931-9274    FAX: +61 (2) 662-7621  or   +61 (2) 662-2451


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