Re: Position
- To: mathgroup at smc.vnet.net
- Subject: [mg119223] Re: Position
- From: Andrzej Kozlowski <akoz at mimuw.edu.pl>
- Date: Wed, 25 May 2011 19:31:07 -0400 (EDT)
You are using a pure function as your second argument but you should use a pattern: Position[data, x_ /; x > 0.95] or Position[data, _?(# > 0.95 &)] Andrzej Kozlowski On 25 May 2011, at 11:54, Joerg Schroeder wrote: > Dear Group, > > I don't understand the following: > > I have a list of data and want to find the position of special elements: > > data=Table[CDF[BinomialDistribution[150,0.3],k],{k,0,150}] > > Position[data,#>=0.95&] > > With this I get {} (null set) as an answer, whereas for example Select gives the answer I expect. > > Select[data,#>=0.95&] > > Do I do something wrong with Position? > > Thanks > > Jorg Schroder > -- > Dr. J=F6rg Schr=F6der > Gymnasium Walsrode > Sunderstrasse 19 > 29664 Walsrode >