[gdal-dev] white line between tiles when using gdal_translate on a vrt file

[Jukka Rahkonen]

00darki <alex.jong0019 <at> gmail.com> writes:

> 
> Hello,
> 
> I've a problem when I use gdal_translate on a vrt, some lines appear on the
> generated image.
> These lines correspond to the border of each small image referenced in the
> vrt.
> These images have been reprojected to mercator projection.
> 
> Lines appears randomly at some zoom levels.
> I thought the overview (by gdaladdo) were the problem, but when I delete the
> .ovr file, this doesn't make any difference.
> 
> Thanks for any help :)
> 
> <http://osgeo-org.1560.x6.nabble.com/file/n5162050/img_bug.png> 

Hi,

Have you warped each tile first individually into EPSG:3857 and VRT file is
combining these warped tiles?

In that case it could help to run gdalwarp with -tr and -tap options. Use
the same pixel size than the original in -tr, or bigger.

-Jukka Rahkonen-