Re: List Position
- To: mathgroup at smc.vnet.net
- Subject: [mg15835] Re: [mg15740] List Position
- From: "Tomas Garza" <tgarza at mail.internet.com.mx>
- Date: Fri, 12 Feb 1999 18:39:55 -0500 (EST)
- Sender: owner-wri-mathgroup at wolfram.com
Harry Flynn wrote:
>Can anyone tell me how I find the position in a list of the first value
>less than or equal to zero.
>For example, how can I get Mathematica to tell me that in the list
>{{1},{1},{2},{8},{-3}}
>that the first value of interest to me is position 5.
Harry,
In[1]:=
listA={{1},{1},{2},{8},{-3}};
Position[-listA,{_?NonNegative}]//First//First Out[1]=
5
Good luck,
Tomas Garza
Mexico City