[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.


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 \
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 \
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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