[Proj] Proj 4.9.1RC3 Released
Hermann Peifer
peifer at gmx.eu
Sat Feb 21 14:22:02 EST 2015
On 2015-02-21 18:31, Howard Butler wrote:
> All,
>
> Proj4 4.9.1RC3 is now released for testing. Should no significant issues be identified, ...
(...)
>>
>> o Regenerate nad/epsg with GDAL r28536 to avoid precision loss in TOWGS84
>> parameters, e.g. on Amersfoort / RD EPSG:4289 (#260)
No sure if this is significant, but instead of a precision loss for
TOWGS84's X,Y,Z-offsets, there is now a "precision gain" for the
rotation values in several cases, e.g. for the mentioned Amersfoort / RD
EPSG:4289. I wonder if this is as it should be.
Hermann
$ diff -u proj/nad/epsg proj-4.9.1/nad/epsg | grep -C4 "<4289>"
@@ -433,7 +433,7 @@
# Loma Quintana
<4288> +proj=longlat +ellps=intl +no_defs <>
# Amersfoort
-<4289> +proj=longlat +ellps=bessel
+towgs84=565.417,50.3319,465.552,-0.398957,0.343988,-1.8774,4.0725
+no_defs <>
+<4289> +proj=longlat +ellps=bessel
+towgs84=565.4171,50.3319,465.5524,-0.398957388243134,0.343987817378283,-1.87740163998045,4.0725
+no_defs <>
# SAD69
...
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