I'm working on the geopackage elevation extension experiment, and trying to
produce some GeoTIFF tiles that get inserted into sqlite.
I need to remap the existing nodata (nan) to some other value that I can
insert into a sqlite table as a number (say zero).
I had a long explanation of what I'm
Le mercredi 06 janvier 2016 20:32:04, Jim Lacy a écrit :
> Thanks Even. I was actually more curious about the quality differences of
> jpeg2000, GDAL 1.11 vs 2.1. File size is important too, of course.
Quality and size are highly correlated. The JPEG2000 encoder honours quite
strictly the compr
Thanks Even. I was actually more curious about the quality differences of
jpeg2000, GDAL 1.11 vs 2.1. File size is important too, of course.
I did some further tests. For example, in GDAL 1.11.2:
gdal_translate -of JP2OpenJPEG -b 1 -b 2 -b 3 -co "QUALITY=12" Kenosha.tif
Kenosha_gdal1_11.jp2
Hi everybody,
thanks for the comments. Regarding the technical details:
Each Tile is its own discrete dataset therefore the hardest part would be
> merging of features into the original features across tiles. You could use
> some complicated merging technique, but that could be very expensive.
>
Le mardi 05 janvier 2016 21:06:55, Blake Thompson a écrit :
> Petr,
>
> No one that I know of is currently working on such a tool. It could be a
> little difficult to write as well.
>
> Each Tile is its own discrete dataset therefore the hardest part would be
> merging of features into the origin
Le mercredi 06 janvier 2016 11:32:25, Gane R a écrit :
> Here is a link to the file
>
> https://drive.google.com/file/d/0B4shTM1bPS5TMDhNMUpkUC04RlE/view?usp=shari
> ng
Fixed by https://trac.osgeo.org/gdal/ticket/6292
--
Spatialys - Geospatial professional services
http://www.spatialys.com
Here is a link to the file
https://drive.google.com/file/d/0B4shTM1bPS5TMDhNMUpkUC04RlE/view?usp=sharing
This the gdalinfo of the TIF file
Size is 5210, 3498
Coordinate System is:
PROJCS["WGS 84 / Pseudo-Mercator",
GEOGCS["WGS 84",
DATUM["WGS_1984",
SPHEROID["WGS 84",6378
Le mardi 05 janvier 2016 18:51:03, Jim Lacy a écrit :
> Can anyone with knowledge of the JP2OpenJPEG driver confirm or deny the
> following observation?
>
> I've been generating jpeg2000's in both GDAL 1.11.2 and GDAL 2.1. With all
> settings the same, I've noticed the visual quality of the image
Le mardi 05 janvier 2016 20:17:34, Gane R a écrit :
> It is weired, when I call CreateDataSource as I had discussed earlier, I
> send a large filename with absoluted path to it. I causes a crash at when
> called from java via jni
>
>
> Is there any limitation in the name of the filename when pass
> I was involved in discussions a few months ago where Mapbox Vector Tiles
> read/write support would have been part of a larger project, but I'm not
> sure if/when this will come true.
Update: just learned that this project has been won by another bidding group,
so I'm not sure if the winner ha
10 matches
Mail list logo
