Re: [gdal-dev] [help][gdalwarp]Use of gdalwarp with data overlapping antimeridian

2018-03-13 Thread LAVOYE Christophe
18 15:41 À : LAVOYE Christophe Cc : gdal-dev@lists.osgeo.org Objet : Re: [gdal-dev] [help][gdalwarp]Use of gdalwarp with data overlapping antimeridian Hi Christophe, Have a look at the following: https://lists.osgeo.org/pipermail/gdal-dev/2016-January/043358.html https://gis.stackexchange.com

Re: [gdal-dev] [help][gdalwarp]Use of gdalwarp with data overlapping antimeridian

2018-03-08 Thread Even Rouault
On jeudi 8 mars 2018 14:40:44 CET Robert Coup wrote: > Hi Christophe, > > Have a look at the following: > > https://lists.osgeo.org/pipermail/gdal-dev/2016-January/043358.html > https://gis.stackexchange.com/questions/37790/how-to-> >

Re: [gdal-dev] [help][gdalwarp]Use of gdalwarp with data overlapping antimeridian

2018-03-08 Thread Robert Coup
or just reply to > you? > > > > Best regards, > > > > > > [image: cid:image003.png@01D1FD34.3B7C8CC0] > > *Christophe LAVOYE - **Analyste* > * AKKA Technologies *Informatique & Systèmes > 7 boulevard Henri Ziegler – 31700 BLAGNAC > <htt

Re: [gdal-dev] [help][gdalwarp]Use of gdalwarp with data overlapping antimeridian

2018-03-07 Thread Robert Coup
Hi Christophe, What do you *expect or want* to happen with your images? Are your 4326 image coordinates in -180° to +180° range (ie. the right longitude is < the left); or do they go past +180°? 3857 is a projected coordinate system, so doesn't have a builtin concept of wrapping. Some clients

[gdal-dev] [help][gdalwarp]Use of gdalwarp with data overlapping antimeridian

2018-03-01 Thread LAVOYE Christophe
Hello, I'm using GDAL library in a C# project. To reproject some geotiff files i'm calling gdalwarp tool as external process with this command: gdalwarp.exe -s_srs EPSG:4326 -t_srs EPSG:3857 -dstalpha input.tiff output.tiff All works fine except for data overlapping antimeridian such as the