[Proj] PROJ 4.4.8 - Release Candidate
Markus Neteler
neteler at itc.it
Tue May 4 12:20:40 EDT 2004
On Tue, May 04, 2004 at 12:48:40AM -0400, Frank Warmerdam wrote:
> Folks,
>
> I have cut a new PROJ release (4.4.8). The changes from NEWS include:
>
> 4.4.8 Release Notes
> -------------------
>
> o Updated epsg file to EPSG 6.5, added other.extra pseudo-EPSG WMS
> definitions
>
> o Made significant fixes to prime meridian support.
>
> o Substantially change pj_datum_transform(), so it and pj_transform() will
> work between coordinate systems with different ellipsoids but no datum
> shift information (assume +towgs84=0,0,0).
>
> o Added pj_get_release() function.
>
> o Ensure pj_transform() will try to transform all points in provided list
> if
> even some might transform properly.
>
> o Improved the accuracy of Geocentric_To_Geodetic() via an iterative
> solution.
>
> o Various other bug fixes.
>
>
>
> Let me know if anyone notices any striking problems with this release and
> I will re-cut it.
Frank,
thanks for the updates. However, the problem with prime meridian
seems to be unsolved.
# LatLong to Italian Gauss Boaga Fuso Ovest (1st Zone):
cs2cs -v +proj=latlong +datum=WGS84 +to +init=epsg:26591 \
+towgs84=-104.1,-49.1,-9.9,0.971,-2.917,0.714,-11.68
11d12'26E 46d06'17N 100
-251428.83 5362296.50 54.97
-> This result is wrong.
# Using the old method:
cs2cs -v +proj=latlong +datum=WGS84 +to +proj=tmerc +lat_0=0 +lon_0=9 \
+k=0.999600 +x_0=1500000 +y_0=0 +ellps=intl +units=m \
+towgs84=-104.1,-49.1,-9.9,0.971,-2.917,0.714,-11.68 \
+no_defs
11d12'26E 46d06'17N 100
1670617.27 5108072.04 54.97
-> This looks correct.
In my opinion the nad/epsg file entries for 26591 and 26592
and maybe all others with +pm parameter are wrong (more than
60 projections). Or the prime meridian is not applied correctly.
Interesting: The lon_0 values seem to be correct in GDAL/gcs.csv
Probably I am missing something (please let me know),
best regards
Markus Neteler
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