Name

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      NEW_RANGE

Purpose

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      Compute a new range array from old.

Category

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Calling Sequence

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      r2 = new_range(r,mag,[center])

Inputs

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      r = current range: [lo,hi]. in
      mag = magnification factor. in
      center = optional new center. in
        Default = (lo+hi)/2.

Keyword Parameters

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Keywords

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        LIMIT=r0 Max allowed range.
          Default is r when mag > 1, no default for mag < 1.

Outputs

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      r2 = new range: [lo2,hi2]. out

Common Blocks

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Notes

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      Notes: Useful for changing plot ranges, like xrange or
      yrange. mag may be < 1 to zoom out (new range is bigger).
      If given, center will be centered in new range if
      possible. New range will be contained within
      current range when mag > 1.

Modification History

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      R. Sterner, 2003 Mar 14
  Copyright (C) 2003, 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.