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Re: Select All Lists Where Any Element is a Given Value

  • To: mathgroup at smc.vnet.net
  • Subject: [mg96664] Re: Select All Lists Where Any Element is a Given Value
  • From: jonm at wolfram.co.uk
  • Date: Thu, 19 Feb 2009 03:35:45 -0500 (EST)
  • References: <gncmgo$fkq$1@smc.vnet.net> <gngk16$jjg$1@smc.vnet.net>

One more approach...

Cases[X, {___, NA, ___}]

On Feb 18, 9:22 am, Peter Breitfeld <ph... at t-online.de> wrote:
> Gregory Lypny wrote:
> > Hello everyone,
>
> > Suppose I have the list
>
> >    X = {{1, 2, 3}, {8, NA, 20}, {-7, 9, NA}},
>
> > where NA is a string, although it need not be.  How can I use Select =
 
> > to pull out all lists in X where NA appears in any element?  In this =
 
> > example, I want to pull out the second and third list.
>
> >            Regards,
>
> >                    Gregory
>
> Try:
>
> Select[X, MemberQ[#, "NA"] &]
>
> Out={{8, "NA", 20}, {-7, 9, "NA"}}
>
> --
> _________________________________________________________________
> Peter Breitfeld, Bad Saulgau, Germany --http://www.pBreitfeld.de



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