Changes between Version 12 and Version 13 of FAQ

Timestamp:

07/28/11 10:06:32 (23 months ago)

Author:

springmeyer

Comment:

--

FAQ

@@ -114 +114 @@
 Note the strategic addition of +nadgrids=@null to the spherical projection definition.
 
-Similar issues apply with many other datasets distributed with projections based on a spherical earth model - such as many NASA datasets.  This coordinate system is now known by the EPSG code 3857 and has in the past been known as EPSG:3785 and EPSG:900913.  When using this coordinate system with GDAL/OGR it is helpful to include the +wktext so the extract proj.4 string will be preserved in the WKT representation:
+Similar issues apply with many other datasets distributed with projections based on a spherical earth model - such as many NASA datasets.  This coordinate system is now known by the EPSG code 3857 and has in the past been known as EPSG:3785 and EPSG:900913.  When using this coordinate system with GDAL/OGR it is helpful to include the +wktext so the exact proj.4 string will be preserved in the WKT representation (otherwise key parameters like `+nadgrids=@null` will be dropped):
 
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