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restricting interpolating functions to be positive

  • To: mathgroup at smc.vnet.net
  • Subject: [mg106402] restricting interpolating functions to be positive
  • From: dantimatter <google at dantimatter.com>
  • Date: Mon, 11 Jan 2010 18:52:33 -0500 (EST)

Hi All,

I would like to construct an interpolation that can only take on
positive values.  The data that I'm trying to interpolate is all
positive, but for some reason the Interpolation[] function 'wants' to
connect the dots by dipping below zero.  Is there a way to force
positivity?  Or should I simply adjust the InterpolationOrder until it
works?

Thanks,
Dan


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