Hi Even,
Thanks for the quick response! The source dataset is a LZW cog with RGBA, and I
confirmed (I think) that the issue was the mask layer by playing with the
switches I used to generate the LZW cog - I didn't even have to do a JPEG COG.
I can cause the same, or very similar behavior, by ch
Louis-Philippe,
Support for rotated grid is a nightmare due to different conventions used for
GRIB, netCDF
or PROJ ob_tran method. The GDAL GRIB and netCDF drivers normally do what is
needed
map from the native product convention to the PROJ one.
Below 2 emails I wrote some time ago the OGC C
Thanks Even for your answer.
Than I guess it's a problem with my NetCDF projection definition since it is
not projected correctly when I view it...
I also found out that I cannot reproject those NetCDF (with a rotated grid) to
a standard projection like EPSG:4326, it fails with:
ERROR 1: Too m
Hi
I see that I forgot to create polygons from the splitted lines
Sp the syntax should be something like:
ST_ExteriorRing((ST_Dump(ST_Polygonize(ST_LineMerge(ST_Union(ST_Force2D(geometry>)).geom)
Hi Ari and Andreas,
Thanks for the information. I will check it out. Today I advanced a
lit
Hi Ari and Andreas,
Thanks for the information. I will check it out. Today I advanced a little
by almost implementing what's been proposed in my message there.
Regards,
Chao
On Wed, Apr 15, 2020 at 3:04 PM Ari Jolma wrote:
> Andreas Oxenstierna kirjoitti 15.4.2020 klo 9.03:
>
> Hi
>
> Have you
Andrew,
Has your source raster an alpha band ? That could explain the difference
since it isn't possible to directly create a YCbCrA JPEG compressed file, but
internally a mask band must be created. However I wouldn't anticipate such
a huge difference in performance between compression schemes.
On mercredi 15 avril 2020 11:56:58 CEST Andrea Aime wrote:
> On Wed, Apr 15, 2020 at 11:36 AM Even Rouault
>
> wrote:
> > > http://www.geopackage.org/spec/
> >
> > My understanding of table 27 is that it is just to define constraints on
> > the values of a column, but not a way to establish a in
Hi Andrea,
> but could be more efficiently represented as enums, as they
>have a small set of values.
> GeoPackage has a native notion of enums, check the spec and search for
> "table 27" for an example:
> http://www.geopackage.org/spec/
My understanding of table 27 is that it is just to define
Andreas Oxenstierna kirjoitti 15.4.2020 klo 9.03:
Hi
Have you tested PostGIS?
ST_ExteriorRing((ST_Dump(ST_LineMerge(ST_Union(ST_Force2D(geometry>).geom)
should extract the points you want to keep by splitting at
intersections - but it may fail in very complex cases. Then I would
start wi
