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MathGroup Archive 2012

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Model fitting

  • To: mathgroup at smc.vnet.net
  • Subject: [mg128748] Model fitting
  • From: dzinoviev at gmail.com
  • Date: Fri, 23 Nov 2012 03:26:53 -0500 (EST)
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I have an array of 3D data in the form {xi,yi,0/1} (that is, the z coordinate is either 0 or 1). The points are not on a rectangular grid. The 0 and 1 areas are more or less contiguous, though the boundary between them can be somewhat fuzzy. The boundary is expected to be described by the equation y=a x^b. How can I adapt NonlinearModelFit or any other standard function to find the best fit values for a and b? Thanks!



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