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polar stereographic coordinate transformation (map to lat/lon)

5.0 | 1 rating Rate this file 10 Downloads (last 30 days) File Size: 3.42 KB File ID: #32907 Version: 1.1

polar stereographic coordinate transformation (map to lat/lon)


Andrew Bliss (view profile)


15 Sep 2011 (Updated )

Transforms map data into lat/lon coordinates for a polar stereographic map projection. NSIDC/SCAR

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File Information

  The National Snow and Ice Data Center (NSIDC) and Scientific Committee
  on Antarctic Research (SCAR) use a version of the polar stereographic
  projection that Matlab does not have. This file does transformations to
  geographic coordinates from map coordinates to facilitate
  comparisons with other datasets.

POLARSTEREO_INV transforms map coordinates to lat/lon data for a polar stereographic system
  LAT and LON are in decimal degrees with negative numbers (-) for S and W.
  X and Y are the map coordinates (scalars, vectors, or matrices of equal size).
  EARTHRADIUS is the radius of the earth defined in the projection
      (default is 6378137.0 m, WGS84)
  ECCENTRICITY is the earth's misshapenness
      (default is 0.08181919)
  LAT_TRUE is the latitude of true scale in degrees, aka standard parallel
      (default is -70). Note that some NSIDC data use 70 and some use 71.
  LON_POSY is the meridian in degrees along the positive Y axis of the map
      (default is 0)

  Equations from: Map Projections - A Working manual - by J.P. Snyder. 1987
    See the section on Polar Stereographic, with a south polar aspect and
  known phi_c not at the pole.



This file inspired Antarctic Mapping Tools.

MATLAB release MATLAB 7.4 (R2007a)
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Comments and Ratings (1)
08 Mar 2013 Chad Greene

Chad Greene (view profile)

This is absolutely magnificent! Thanks for sharing!

19 Sep 2011 1.1

Note: companion file (forward transformation) hasn't been approved yet by TMW. Should come through in a couple days.

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