Andreas Neumann a.neumann@... writes:
Hi,
Some of my maps I georeference are rotated approx. 45 degrees because
they did not point to the north before georeferencing. This is desired -
however - the resulting file has a huge black background as a result of
the rotation.
I tried with
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Il 13/01/2014 22:05, Jukka Rahkonen ha scritto:
Don't let QGIS to do the warping but just push the button and create the
GDAL commands. Then you can edit the gdal_translate command and have total
control over all the features it supports
Hi,
Some of my maps I georeference are rotated approx. 45 degrees because
they did not point to the north before georeferencing. This is desired -
however - the resulting file has a huge black background as a result of
the rotation.
I tried with the option use 0 for transparency if necessary -
Dear Andreas,
try Raster | Extraction | Clipper with a mask layer and alpha band.
Regards,
Zoltan
On Tue, 7 Jan 2014, Andreas Neumann wrote:
Hi,
Some of my maps I georeference are rotated approx. 45 degrees because
they did not point to the north before georeferencing. This is desired -
I had the same issue, but with a mosaic image, and edited the source
rasters with Gimp to make black pixels slightly lighter. Not noticeable in
the image but enough to not be transparent.
On Jan 8, 2014 12:25 AM, Andreas Neumann a.neum...@carto.net wrote:
Hi,
Some of my maps I georeference are
