Re: Summing all the elements along a dimension in a matrix
- To: mathgroup at smc.vnet.net
- Subject: [mg104303] Re: [mg104288] Summing all the elements along a dimension in a matrix
- From: Murray Eisenberg <murray at math.umass.edu>
- Date: Tue, 27 Oct 2009 04:57:25 -0500 (EST)
- References: <200910260425.XAA18560@smc.vnet.net>
- Reply-to: murray at math.umass.edu
A matrix is 2-dimensional and has no "third dimension". Are you trying to sum along the 3rd row? Along the 3rd column? Or are you talking about a higher-dimensional array? CuppoJava wrote: > Hi, > I just started using Mathematica after a year of experience with > another system, and I have a question regarding how to handle matrices. > > What is the equivalent code for doing > sum(A,3) in mathematica? > This sums all the elements A along the third dimension. > > I'm having a hard time finding it in the documentation. > > Thanks a lot for your help > -Patrick > -- Murray Eisenberg murray at math.umass.edu Mathematics & Statistics Dept. Lederle Graduate Research Tower phone 413 549-1020 (H) University of Massachusetts 413 545-2859 (W) 710 North Pleasant Street fax 413 545-1801 Amherst, MA 01003-9305
- References:
- Summing all the elements along a dimension in a matrix
- From: CuppoJava <patrickli_2001@hotmail.com>
- Summing all the elements along a dimension in a matrix