[gdal-dev] Projection definition issue with Mapinfo files

[Yves Jacolin]

Thanks Even! I did not remember this ticket :)

I attached the zip file and add a comment which I hope clarify things about the 
zip file content.

Y.
Le mardi 30 août 2011 00:35:54, Even Rouault a écrit :
> Le lundi 29 août 2011 13:34:22, Yves Jacolin a écrit :
> > Hello,
> > 
> > One of QGIS user report an issue with mapInfo file (TAB file). If you
> > understand french you can see the thread here:
> > http://georezo.net/forum/viewtopic.php?pid=197022
> 
> This looks really similar to the issue raised in ticket
> http://trac.osgeo.org/gdal/ticket/3292 that you reported almost 2 years ago
> ;-) but that did not see any progress unfortunately :-(
> 
> Although not a specialist of the mapinfo format, I think the fix for
> EPSG:2154 should be straightforward (adding an entry in a table) once we
> know the mapinfo code that matches to the Reseau_Geodesique_Francais_1993
> datum. One way to get it would be to attach the COMMUNEL93.TAB (and the
> other related files that make dataset) mentionned in
> http://georezo.net/forum/viewtopic.php?pid=197022 to the ticket.
> 
> > I try to sum up the issue in english in this email. The process is
> > basicly as follow:
> > 1. check projection information with ogrinfo
> > 
> > > DATUM["GRS_80",
> > > 
> > >             SPHEROID["GRS 80",6378137,298.257222101],
> > 
> > 2. update projection information file with ogr2ogr:
> > > ogr2ogr -f "MapInfo file" -s_srs "EPSG:2154" -t_srs "EPSG:2154" new.tab
> > 
> > origin.tab
> > 
> > 3. check projection information with ogrinfo
> > 
> > > DATUM["WGS_1984",
> > > 
> > >             SPHEROID["WGS 84",6378137,298.257223563],
> > 
> > 1 and 3 show differents projection information! If I try to change file
> > format to shp, it seems that projection information are correct.
> > 
> > I can share tab files if needed.
> > 
> > Any idea? Thanks.
> > 
> > Y.

-- 
Yves Jacolin

http://yjacolin.gloobe.org