This is documentation for Mathematica 7, which was
based on an earlier version of the Wolfram Language.

GeoGridPosition

 GeoGridPosition[{x, y, z}, projection]represents a point {x, y, z} in a planimetric cartographic grid using the specified projection.
• Projections can be specified in the following forms:
 "proj" named projection with default parameter values {"proj",1,...} projection with standard parallels specified {{"proj",...},{lat,long}} projection centered on the specified position {proj,opts} projection with detailed options specified
• Names of possible projections are given by .
• Default values of options for a particular named projection are given by GeoProjectionData[proj].
• GeoGridPosition[{x, y}] represents a point {x, y} in a cartographic grid, assuming a standard ellipsoid height of zero.
• GeoGridPosition[{x, y, z, t}] includes a time, given as a date t in decimal years.
Convert a geodetic position to a grid point using a spherical gnomonic projection:
Convert back to a geodetic position:
Compute a spherical gnomonic projection using a custom setting for the central meridian:
Compute a projection using explicitly specified projection parameters:
Convert a geodetic position to a grid point using a spherical gnomonic projection:
 Out[1]=
Convert back to a geodetic position:
 Out[2]=

Compute a spherical gnomonic projection using a custom setting for the central meridian:
 Out[1]=

Compute a projection using explicitly specified projection parameters:
 Out[1]=
 Applications   (1)
Get latitude, longitude lists for the main boundaries of a country:
Convert geodetic coordinates to grid positions using the spherical Mercator projection:
Use the Cassini projection with central meridian -50 degrees:
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