VectorToMatrix

*To*: mathgroup at smc.vnet.net*Subject*: [mg4283] VectorToMatrix*From*: Robert Pratt <rpratt at math.unc.edu>*Date*: Sat, 29 Jun 1996 03:54:08 -0400*Sender*: owner-wri-mathgroup at wolfram.com

I want to define a function VectorToMatrix[list_, n_] that behaves as follows: VectorToMatrix[{a,b,c,d,e,f,g,h,i,j}, 4]//MatrixForm 0 a b c d 0 0 e f g 0 0 0 h i 0 0 0 0 j Now n can be determined from Length[list], which will always be equal to n choose 2 for some n. But I would rather input n to save that computation. (I will be doing this for a lot of vectors.) Any ideas? Rob Pratt Department of Mathematics The University of North Carolina at Chapel Hill CB# 3250, 331 Phillips Hall Chapel Hill, NC 27599-3250 rpratt at math.unc.edu