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 with a
ST_SnapToGrid with a quite high tolerance to l
Hi,
I wrote a method to a Polygon class (in Python) that solves that problem
because the ones in GEOS via Shapely did not seem good enough. My method
was based on no published algorithm but just my own reasoning, it is
probably not optimal speed-wise. I did not perform formal testing on it
bu
I've been working in the gdal-dev-env (version 3.1.0, installed around
mid-December) on OSGeo4w (mostly because it's faster than making COGs using the
GTIFF driver) on large (e.g. 102600x91100) orthophoto rasters, generating VRTs,
TIFFs and COGs.
While I can do LZW, DEFLATE, and uncompressed ju
Dear all,
Does anyone have some experience or is aware of some algorithm that can
find and clip the inner loop formed in a polygon ? I attach one example
here. In this case I would only keep the outer points and drop the ones
that make an inner loop. I am developing some algorithm to simulate
wild
Louis-Phillipe,
Reading netCDF or GRIB2 rotated grids works, but not writing
them to netCDF. That could potentially be added, but this is not
handled currently.
Even
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http://www.spatialys.com
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gdal-d
Hi all,
I have a NetCDF file with a rotated grid that I try to manipulate with GDAL
(master build GDAL 3.1.0dev-c6bff27467, released 2020/04/14) and open in QGIS
(nightly build) and it looks like the rotated grid is not recognized or
supported:
ERROR 1: Only OGC WKT GEOGCS and PROJCS Projectio
Hardien,
> I read about the ISG in here says that driver is "New In Version 3.1"
> https://gdal.org/drivers/raster/isg.html#driver-capabilities
>
> Does this mean in the current release 3.0.4 the driver is not available
> yet?
Yes
> If it doesn't, is there any way to force install it somehow us
