Hi,
I need to crop a DEM raster file with a shapefile. This shapefile has many
polygons. I need to calculate several variables after the crop operation.
I do not need to write the warped result out to my disk and I intend to use
either VRT or MEM once the test is passed.
The shapefile has the sam
Hi all,
I've been puzzling over a problem with trying to get a higher resolution
images using a VRT file so low res data looks smoother in mapserver.
This is my source tif image:
gdalinfo /maps/wms/data/HYCOM/HYCOM_today_mlt.tif
Driver: GTiff/GeoTIFF
Files: /maps/wms/data/HYCOM/HYCOM_today_m
John
New proj now adds support for geotiffs for datums, much smaller and can be
accessed over net, subset, etc. There is a CDN for the data, cdn.prog.org as
well as a utility for fetching data, https://proj.org/apps/projsync.html.
You can use the online CDN to just fetch what a user needs at ru
Hi,
This question may belong rather to the Proj mailing list. There is already a
thread https://lists.osgeo.org/pipermail/proj/2020-July/009729.html.
-Jukka Rahkonen-
John Daniel-2 wrote
> Hello,
> The old proj-datumgrid is divided into a small, 13 MB required dataset and
> a number of much la
Hello,
The old proj-datumgrid is divided into a small, 13 MB required dataset and a
number of much larger optional regional datasets. The new proj-data doesn't
seem to have this distinction. It is smaller overall, but still 500 MB.
I am interested in using GDAL in mobile apps so I don't want to
Hi,
I wonder if it a) might work and b) could have some practical use to implement
an open option for attaching other SQLite databases to SQLite based datasources
https://www.sqlite.org/lang_attach.html. The usage could be something like -oo
ATTACH=path/to/other.gpkg:alias, where "alias" part
Hi,
In case of polylines (i.e. road segments, single layer) - each polyline
is vertex and edge is pure virtual (so it identifier is -1).
There are different cases, for example:
1. Water network with pipes (vertices) and edges (valves)
2. Road network - each road segment is vertex, edges are
Hi All,
Does anyone know the status of this driver?
https://gdal.org/drivers/vector/idb.html. I see no test suite, but some
patches were applied back in 2017.
Is it still used in production by anyone of this list? Does it have any
known significant limitations? e.g catalog or layer metadata que
Hi,
You need to follow these steps:
1. Create empty network
> gnmmanage.exe create -f GNMFile -t_srs "EPSG:4326" -dsco
"net_name=my_network_1" C:\tmp\gnmnetwork
2. Load your data
> gnmmanage.exe import lines.shp -l lines C:\tmp\gnmnetwork
Repeat for all your layers
3. Connect features to
