MathGroup Archive 2007

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Hole/Disk function

  • To: mathgroup at
  • Subject: [mg76024] Hole/Disk function
  • From: Mathieu G <ellocomateo at>
  • Date: Tue, 15 May 2007 04:45:55 -0400 (EDT)

Is there a better way to define a Disk/Hole function than that?:

DHole[x_, y_] := If[Sqrt[x^2 + y^2] <= HoleSize, 1, 0];

I would like to use it for a convolution using the definition as shown 

Best regards,

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