Re: [gdal-dev] Which Proj.4 transforms are available in GDAL?

2017-09-01 Thread Even Rouault
On vendredi 1 septembre 2017 20:42:34 CEST Andre Joost wrote: > Am 01.09.2017 um 20:14 schrieb Even Rouault: > >> ogr2ogr -s_srs EPSG:4326 -t_srs "+proj=lcc +lat_1=13.316667 > >> +lat_2=14.25 +lat_0=13.78 +lon_0=-89 +x_0=50 +y_0=295809.184 > >> +k_0=0.6704 +ellps=clrk66 +units=m

Re: [gdal-dev] Which Proj.4 transforms are available in GDAL?

2017-09-01 Thread Andre Joost
Am 01.09.2017 um 20:14 schrieb Even Rouault: ogr2ogr -s_srs EPSG:4326 -t_srs "+proj=lcc +lat_1=13.316667 +lat_2=14.25 +lat_0=13.78 +lon_0=-89 +x_0=50 +y_0=295809.184 +k_0=0.6704 +ellps=clrk66 +units=m +no_defs +towgs84=0,125,194,0,0,0,0 +wktext" LimitesNAD27.shp dptoA_WGS_

Re: [gdal-dev] Which Proj.4 transforms are available in GDAL?

2017-09-01 Thread Even Rouault
> This seems to work arbitrary. Not really. GDAL is an abstraction of a lot of imperfections, so losses can happen for various (more or less well documented) reasons each time you export & import. > > gdalwarp -overwrite -dstnodata 0 -s_srs EPSG:3857 -t_srs "+proj=lcc > +lat_1=13.31666

Re: [gdal-dev] Which Proj.4 transforms are available in GDAL?

2017-09-01 Thread Andre Joost
Am 25.08.2017 um 13:52 schrieb Even Rouault: For unsupported projections, add +wktext. A dummy WKT representation is then built that captures the full proj.4 string in a EXTENSION node. Can also serve for supported projections if you want to overrite the WKT -> proj.4 string conversion done by