Re: mirror image of a square matrix

*To*: mathgroup at smc.vnet.net*Subject*: [mg66335] Re: [mg66318] mirror image of a square matrix*From*: Sseziwa Mukasa <mukasa at jeol.com>*Date*: Wed, 10 May 2006 06:33:23 -0400 (EDT)*References*: <200605090635.CAA18543@smc.vnet.net>*Sender*: owner-wri-mathgroup at wolfram.com

On May 9, 2006, at 2:35 AM, ravi wrote: > Let me define the mirror image of a matrix as the operation of > flipping > the columns such that the last column becomes the first, the second > last becomes the second and so on. I would like to know if this can be > done simpler than as follows: > > mat=Table[Random[],{n},{n}] > matR=Transpose[Reverse[Transpose[mat]]] You can avoid the transposition with: matR=Reverse/@mat Alternatively you can do matR=mat[[All,Range[Last[Dimensions[mat]],1,-1]]] > Are there any built in functions for operations like these? Not for this particular one, although there is the LinearAlgebra`MatrixManipulation package. Regards, Ssezi

**References**:**mirror image of a square matrix***From:*"ravi" <rv15i@yahoo.se>