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RE: Extraction of positive values from list of both +/- values

  • To: mathgroup at smc.vnet.net
  • Subject: [mg34643] RE: [mg34637] Extraction of positive values from list of both +/- values
  • From: "Florian Jaccard" <jaccardf at eicn.ch>
  • Date: Fri, 31 May 2002 04:26:18 -0400 (EDT)
  • Sender: owner-wri-mathgroup at wolfram.com

In[4]:=
DeleteCases[lstvals,x_/;x<0]

Out[4]=
{700,600,500,400,300,200,100,100}

Meilleures salutations

Florian Jaccard
EICN-HES
e-mail : jaccardf at eicn.ch


-----Message d'origine-----
De : O.A. Linares, M.D., Ph.D. [mailto:divinesaam at aol.com]
Envoyé : jeu., 30. mai 2002 08:55
À : mathgroup at smc.vnet.net
Objet : [mg34637] Extraction of positive values from list of both +/-
values


Dear Colleagues,

I have a list of values:

lstvals={700, 600, 500, 400, 300, 200, 100, -50, 100, -200, -300}

I want to create a list that contains only the positive values. I know I can
use

lst=Take[lstvals, 7]

The problem is, the size of the vectors vary. Help appreciated.

Thanks,

Oscar




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