Re: How to Invert Rows and Columns for a Grid of List of Lists

*To*: mathgroup at smc.vnet.net*Subject*: [mg125920] Re: How to Invert Rows and Columns for a Grid of List of Lists*From*: Bill Rowe <readnews at sbcglobal.net>*Date*: Sat, 7 Apr 2012 05:55:58 -0400 (EDT)*Delivered-to*: l-mathgroup@mail-archive0.wolfram.com

On 4/6/12 at 6:02 AM, brtubb at pdmusic.org wrote: >Consider two lists >a = {{1,2,3},{4,5,6},{7,8,9}}; >b = {{1,4,7},{2,5,8},{3,6,9}}; >I want to transform a "into" b Use Transpose, that is In[4]:= a = {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}}; b = {{1, 4, 7}, {2, 5, 8}, {3, 6, 9}}; b == Transpose[a] Out[6]= True