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PRECIPMAP

PRECIPMAP

Name


      PrecipMap

Purpose



      This is a program that demonstrates how to place an IDL map projection
      onto an image that is already in a map projection space. It uses a NOAA
      precipitation image that is in a polar stereographic map projection, and
      for which the latitudes and longitudes of its four corners are known.
      For additional details, see http://www.idlcoyote.com/map_tips/precipmap.html.

Author



      FANNING SOFTWARE CONSULTING
      David Fanning, Ph.D.
      1645 Sheely Drive
      Fort Collins, CO 80526 USA
      Phone: 970-221-0438
      E-mail: david@idlcoyote.com
      Coyote's Guide to IDL Programming: http://www.idlcoyote.com/

Category



      Map Projection

Calling Sequence



      IDL> PrecipMap, filename

Inputs



      filename: The name of the precipitation file. For demo, download
                  ST4.2005010112.24h.bin from http://www.idlcoyote.com/data/ST4.2005010112.24h.bin.
                 

Keywords


 
      DATA: Set this keyword to a named variable that on output will contain the scaled data.
     
      PALETTE: Set this keyword to a named variable that on output will contain the color
                  palette used to display the data.
                 

Restrictions



    Requires files from the Coyote Library:
    http://www.idlcoyote.com/documents/programs.html

Modification History



  Written by David W. Fanning, 28 April 2006 from code and discussion supplied
      by James Kuyper in the IDL newsgroup.
  Renamed Colorbar procedure to cgColorbar to avoid conflict with IDL 8 Colorbar function.
        26 September 2010. DWF.
  Got the polar stereo map projection correct. 5 September 2011. DWF.
  Added DATA, MAP, and PALETTE output keywords and updated to use more modern Coyote
        Library mapping routines. 2 November 2012. DWF.



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