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| author | Even Rouault <even.rouault@spatialys.com> | 2020-04-14 17:17:55 +0200 |
|---|---|---|
| committer | Even Rouault <even.rouault@spatialys.com> | 2020-04-15 01:07:18 +0200 |
| commit | 964569728722e9e91f152410a4747a0ba078bd84 (patch) | |
| tree | 54369133947916e20bbe9004eb16857f3f1b72cd /data/proj.ini | |
| parent | 5b017a8a78acc1f8b086ae339ecec257ee9d9684 (diff) | |
| download | PROJ-964569728722e9e91f152410a4747a0ba078bd84.tar.gz PROJ-964569728722e9e91f152410a4747a0ba078bd84.zip | |
tmerc/utm: add a +algo=auto/evenden_snyder/poder_engsager parameter
The default remains +alg=poder_engsager.
This default value can be changed in proj.ini
+algo=auto will use Evenden Synder implementation if the error in
doing so remains below 0.1 mm on Earth-sized ellipsoid
Diffstat (limited to 'data/proj.ini')
| -rw-r--r-- | data/proj.ini | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/data/proj.ini b/data/proj.ini index c9e29e52..067f0170 100644 --- a/data/proj.ini +++ b/data/proj.ini @@ -14,3 +14,11 @@ cache_enabled = on cache_size_MB = 300 cache_ttl_sec = 86400 + +; Transverse Mercator (and UTM) default algorithm: auto, evenden_snyder or poder_engsager +; * evenden_snyder is the fastest, but less accurate far from central meridian +; * poder_engsager is slower, but more accurate far from central meridian +; * default will auto-select between the two above depending on the coordinate +; to transform and will use evenden_snyder if the error in doing so is below +; 0.1 mm (for an ellipsoid of the size of Earth) +tmerc_default_algo = poder_engsager |