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SCALEDATA

SCALEDATA

Name


      SCALEDATA

Purpose


      Linearly scale data from one range to another (allow missing).

Category


Calling Sequence


      b = scaledata( a, in1, in2, out1, out2)

Inputs


      a = Array to scale. in
      in1 = array value to scale to out1. in
      in2 = array value to scale to out2. in
      out1 = value in1 gets scaled to (def=0). in
      out2 = value in2 gets scaled to (def=255). in

Keyword Parameters


Keywords


        MISSING=miss Missing data value. Anything less than
          out1 or greater than out2 is set to miss if given.
        /SBYTE The input array is a signed byte.
          IDL does not have signed bytes so signed byte data will
          be in a byte with values from 0 to 255 but anything
          over 127 represents a negative value. This keyword
          corrects the values into a signed integer before
          applying the scaling.

Outputs


      b = scaled array. out

Common Blocks


Notes


Modification History


      R. Sterner, 2012 Nov 27
  Copyright (C) 2012, 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.



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