Re: Position of element in a list
- To: mathgroup at smc.vnet.net
- Subject: [mg16392] Re: [mg16301] Position of element in a list
- From: "Richard Finley" <rfinley at medicine.umsmed.edu>
- Date: Thu, 11 Mar 1999 02:16:56 -0500
- Sender: owner-wri-mathgroup at wolfram.com
Roger,
Here is one way....
Position[Negative[list],True]
regards, RF
>>> Roger Mason <rmason at sparky2.esd.mun.ca> 03/07/99 12:05AM >>>
Hi,
I want to find the Position[] of negative elements in a list. The obvious
methods do not work:
Position[{-1, 3, -2, 1}, -_]
and
Position[{-1, 3, -2, 1}, -x_]
return
{}
So how do I perform this apparently simple task?
Thanks,
Roger Mason