Re: How do I use Select[list,condition]?
- To: mathgroup at smc.vnet.net
- Subject: [mg4547] Re: How do I use Select[list,condition]?
- From: Wolfram at 3rd.Eye.net
- Date: Wed, 7 Aug 1996 04:17:53 -0400
- Organization: 3rd Eye
- Sender: owner-wri-mathgroup at wolfram.com
In article <4thatm$j6e at dragonfly.wolfram.com>, welter at texoma.com (Jason
Welter) wrote:
> I have a list that looks like:
>
> data = {{1,1,a,4,5,6},{2,1,a,2,3,4},{3,1,a,7,8,9},
> {1,2,b,4,5,6},{2,2,b,2,3,4},{3,2,b,7,8,9},
> {1,3,c,4,5,6},{2,3,c,2,3,4},{3,3,c,7,8,9}}
>
> and I want to pick out the lists that have a 2 as the second element
> of the list. I tried something like:
>
> data1 = Select[data,data[[#,2]]==2];
>
> but this doesn't work. How do I do it?
Like this:
Select[data, #[[2]]==2&]
the "&" makes it a `pure' function
Wjr
--
}.
`\
I only exist in interaction
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