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Re: setting elements of an array based on a condition

  • To: mathgroup at smc.vnet.net
  • Subject: [mg87180] Re: setting elements of an array based on a condition
  • From: Ray Koopman <koopman at sfu.ca>
  • Date: Thu, 3 Apr 2008 05:16:11 -0500 (EST)
  • References: <fsvejr$ssp$1@smc.vnet.net>

On Apr 2, 1:03 am, Claus <clausena... at gmail.com> wrote:
> [...]
> 2) Then I want to calculate the sum of the elements in each column of W.
> How can I do this?
> [...]

In[1]:= W = Table[Random[Integer],{4},{5}]
        Total@W

Out[1]= {{0,1,1,1,1},
         {1,0,1,0,1},
         {0,0,1,0,0},
         {1,0,1,1,1}}

Out[2]=  {2,1,4,2,3}


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