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MathGroup Archive 2005

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  • To: mathgroup at
  • Subject: [mg61045] Select from list
  • From: "Steven Taracevicz" <sftara at>
  • Date: Sat, 8 Oct 2005 02:49:15 -0400 (EDT)
  • Sender: owner-wri-mathgroup at


I read a text file that gives me a list.
nLevel[8, 10] = Import["output8_10.txt", "List"]


I have no problems calculating mean, variance etc. with the list.

When I use:

Select[nLevel[8,10], #<0]



despite negative elements.

I cannot figure out why.


Steven Taracevicz

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