Name

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      POLYSTAT

Purpose

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      Compute polygon statistics (# vertices, area, perimeter).

Category

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Calling Sequence

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      polystat, x, y, s

Inputs

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      x,y = polygon vertices. in

Keyword Parameters

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Keywords

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        /CURVE means x,y are a curve, return
          arc_length instead of perimeter (area=0).
        /SIGNED returned signed area (no abs(a)).

Outputs

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      s = statistics. out
        s = [n_vertices, area, perimeter].

Common Blocks

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Notes

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      Notes: See also drawpoly.

Modification History

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      R. Sterner, 30 Oct, 1990
      R. Sterner, 2006 Mar 15 --- Added /SIGNED.
  Copyright (C) 1990, 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.