Name

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      SPL_ANGINT

Purpose

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      Spline angular interpolation of a periodic function.

Category

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Calling Sequence

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      r2 = spl_angint(r, a, a2)

Inputs

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      r = Radii of spline anchor points. in
      a = Angles of spline anchor points. in
      a2 = Angles of desired interpolated points. in

Keyword Parameters

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Keywords

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        /DEGREES means angles are in degrees, else radians.
        /CLOSED means last point has already been repeated,
          else repeat it here before interpolating.

Outputs

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      r2 = Radii of desired interpolated points. out
        Make sure a2 is in a range appropriate to a.

Common Blocks

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Notes

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      Notes: If given curve has the first point repeated as
      the last it is closed. This routine must be told if the
      curve is closed. The given points are assumed to be not
      too non-uniform along the curve.

Modification History

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      R. Sterner, 1998 May 14
      R. Sterner, 1998 May 18 --- Fixed angles.
  Copyright (C) 1998, Johns Hopkins University/Applied Physics Laboratory
  This software may be used, copied, or redistributed as long as it is not
  sold and this copyright notice is reproduced on each copy made. This
  routine is provided as is without any express or implied warranties
  whatsoever. Other limitations apply as described in the file disclaimer.txt.