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MathGroup Archive 1992

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Re: setting tolerance for small answers

  • To: mathgroup at yoda.physics.unc.edu
  • Subject: Re: setting tolerance for small answers
  • From: Boss Man <BOSS at noaapmel.gov>
  • Date: Mon, 21 Sep 1992 09:04 PDT

Susan Rempe writes:
========================================================================
Mathgroup:
        Does anyone know how to set a tolerance such that values
in an answer set smaller than that tolerance are automatically
returned as zero?
        In particular, I'm interested in setting very small eigenvalues
to zero.

        Susan Rempe
        rempe at chemc2.chem.washington.edu
=======================================================================
The answer is the Chop command.  The syntax is
     Chop[<expr>] or
     Chop[<expr>, <dx>]
See the big book for details.

Ed Boss
NOAA/PMEL






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