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

[Andre Joost]

Am 01.09.2017 um 20:14 schrieb Even Rouault:

>
>>
>> ogr2ogr -s_srs EPSG:4326 -t_srs "+proj=lcc +lat_1=13.31666666666667
>> +lat_2=14.25 +lat_0=13.783333 +lon_0=-89 +x_0=500000 +y_0=295809.184
>> +k_0=0.99996704 +ellps=clrk66 +units=m +no_defs
>> +towgs84=0,125,194,0,0,0,0 +wktext" LimitesNAD27.shp dptoA_WGS_1984.shp
>> gdalsrsinfo LimitesNAD27.prj >>out.txt
>>
>> neither saves towgs84 or wktext
>
> Yes, a .prj file contains a ESRI flavour of WKT, which supports neither TOWGS84 or
> EXTENSION, so they get stripped.
>

So how is a datum shift outside of the EPSG code world supposed to be 
applied to a shapefile with ogr2ogr?

Greetings,
André Joost