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Summing all the elements along a dimension in a matrix

• To: mathgroup at smc.vnet.net
• Subject: [mg104288] Summing all the elements along a dimension in a matrix
• From: CuppoJava <patrickli_2001 at hotmail.com>
• Date: Sun, 25 Oct 2009 23:25:13 -0500 (EST)

Hi,
I just started using Mathematica after a year of experience with
Matlab, 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

• Follow-Ups:
  • Re: Summing all the elements along a dimension in a matrix
    • From: Murray Eisenberg <murray@math.umass.edu>