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| author | Javier Goizueta <jgoizueta@gmail.com> | 2018-04-11 17:56:08 +0200 |
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| committer | Javier Goizueta <jgoizueta@gmail.com> | 2018-04-11 17:57:02 +0200 |
| commit | f1ea5041d5049498e3cd88f9a215ebb0f4b86a34 (patch) | |
| tree | fdcb7734a21a821f41b47357e3624a075e48b320 /docs/source | |
| parent | cb376cb8172896553d3d5b5d0995873264eaf64e (diff) | |
| download | PROJ-f1ea5041d5049498e3cd88f9a215ebb0f4b86a34.tar.gz PROJ-f1ea5041d5049498e3cd88f9a215ebb0f4b86a34.zip | |
Enhance the precision of Spherical Mercator projection near the equator
This uses a linear approximation of tan(x+pi/4) for better precision at small latitudes.
As a result points of latitude 0 maintain a 0 Y coordinate and 0,0 is transformed to 0,0
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