Re: Select All Lists Where Any Element is a Given Value
- To: mathgroup at smc.vnet.net
- Subject: [mg96621] Re: Select All Lists Where Any Element is a Given Value
- From: samuel.thomas.blake at gmail.com
- Date: Tue, 17 Feb 2009 06:27:49 -0500 (EST)
- References: <gncmgo$fkq$1@smc.vnet.net>
On Feb 17, 8:40 am, Gregory Lypny <gregory.ly... at videotron.ca> 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 this
In[12]:= X = {{1, 2, 3}, {8, NA, 20}, {-7, 9, NA}};
In[13]:= Select[X, ! FreeQ[#, NA] &]
Out[13]= {{8, NA, 20}, {-7, 9, NA}}
Sam