[gdal-dev] no translation for Mercator to PROJ.4

[Andre Joost]

Am 04.06.2013 00:14, schrieb rawalpundi:
> hello,
>
> i'm trying to gdalwarp a google map tile geotiff its SRS is a
> 3857.prj
>
> PROJCS["WGS 84 / Pseudo-Mercator",GEOGCS["Popular Visualisation
> CRS",DATUM["D_Popular_Visualisation_Datum",SPHEROID["Popular_Visualisation_Sphere",6378137,0]],PRIMEM["Greenwich",0],UNIT["Degree",0.017453292519943295]],PROJECTION["Mercator"],PARAMETER["central_meridian",0],PARAMETER["scale_factor",1],PARAMETER["false_easting",0],PARAMETER["false_northing",0],UNIT["Meter",1]]
>
>  unfortunately this proj is not supported by my framework so I'm
> trying to convert it to a standard WGS84 proj : gdalwarp -t_srs
> WGS84
>
> but I get the following error : ERROR6 : No translation for Mercator
> to PROJ.4 format is known
>
> any idea of what it wrong ?



You can explicitly give the source and target CRS with
  -s_srs EPSG:3857 t_srs EPSG:4326

HTH,
André Joost