Name

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      UNIT

Purpose

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      Returns unit vector along given vector.

Category

---

Calling Sequence

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      u = unit(v)

Inputs

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      v = vector: [vx,vy,vz]. in

Keyword Parameters

---

Outputs

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      u = unit vector along v: [ux,uy,uz]. out

Common Blocks

---

Notes

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      Note: if length of vector is 0 then the 0 vector is returned.

Modification History

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      R. Sterner. 24 Aug, 1986.
      R. Sterner, 14 Feb, 1991 --- converted to IDL V2.
      Johns Hopkins University Applied Physics Laboratory.
  Copyright (C) 1986, 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.