Re: Selecting Sub-lists After Split
- To: mathgroup at smc.vnet.net
- Subject: [mg77475] Re: [mg77425] Selecting Sub-lists After Split
- From: Bob Hanlon <hanlonr at cox.net>
- Date: Sat, 9 Jun 2007 05:42:52 -0400 (EDT)
- Reply-to: hanlonr at cox.net
myList = Table[RandomReal[{-1, 1}], {10}];
myNewList = Split[myList, #1 #2 > 0 &];
Select[myNewList, #[[1]] < 0 &]
{{-0.653948,-0.875564,-0.770361},{-0.240326}}
Bob Hanlon
---- Gregory Lypny <gregory.lypny at videotron.ca> wrote:
> Hello everyone,
>
> Suppose I have a list of real number called myList. I split it into
> sub-lists of positive and negative numbers called myNewList by doing
> this (there may be a more elegant way):
>
> myNewList = Split[myList, #1 #2 > 0 &]
>
> Now, how can I select all of the sub-lists of negative numbers from
> myNewList?
>
> Any tips would be most appreciated.
>
> Regards,
>
> Gregory
>