Re: [gdal-dev] ECW Driver

2025-01-16 Thread Norman Barker via gdal-dev
Should note that this is the desktop redistributable not the server redistributable. I don't think (and this was the case in the past for me) that you can use this in a server though INAL. Norman On Thu, Jan 16, 2025 at 11:33 AM Kurt Schwehr via gdal-dev < gdal-dev@lists.osgeo.org> wrote: > Fr

Re: [gdal-dev] ECW Driver

2025-01-16 Thread Kurt Schwehr via gdal-dev
>From https://gdal.org/en/stable/drivers/raster/ecw.html "Support is optional and requires linking in the libraries available from the ECW/JP2 SDK Download page." You must build from source and have Hexagon's binary SDK. On Thu, Jan 16, 2025 at 8:06 AM Richard Greenwood via gdal-dev < gdal-dev@l

Re: [gdal-dev] Fwd: GDAL open flags

2025-01-16 Thread Michał Kowalczuk via gdal-dev
Thank you Laurentiu, “*They exist for safety reasons (so you don't modify a dataset by mistake), not as an optimization.” * This is what I’m looking for. 😊 All the best, Michal Kowalczuk W dniu czw., 16 sty 2025 o 10:11 Laurențiu Nicola via gdal-dev < gdal-dev@lists.osgeo.org> napisał(a): > Hi

[gdal-dev] Killing useless write side of drivers

2025-01-16 Thread Even Rouault via gdal-dev
Hi, I strongly suspect a number of drivers are hardly used, in particular their write/edition side My list of candidate victims for removal (of the write side) is at https://docs.google.com/spreadsheets/d/12yk0p8rRK4rAYO_VwXboatWkiILAjE2Cepu32lsHhM8/edit?gid=0#gid=0 . Please add your potenti

Re: [gdal-dev] DXF MLTIPOINT

2025-01-16 Thread Michał Kowalczuk via gdal-dev
Dear Andrew, are you a CAD user? DXF does not support MultiPolylines (MultiLineString) natively. Lines and MultiLines are both saved as LWPOLYLINE objects. It means that Multilines are exploded. Below you can find the DXF definition of 3 separate LWPOLYLINES that originally in GIS creates a MultiP

Re: [gdal-dev] ECW Driver

2025-01-16 Thread Richard Greenwood via gdal-dev
It looks like you have to request the read-only redistributable: https://supportsi.hexagon.com/s/article/ERDAS-ECW-JP2-SDK-Read-Only-Redistributable-Request And I am guessing that you will need to build GDAL from source. Rich On Wed, Jan 15, 2025 at 11:44 PM selim sezer via gdal-dev < gdal-dev@l

Re: [gdal-dev] DXF MLTIPOINT

2025-01-16 Thread Andrew C Aitchison via gdal-dev
On Thu, 16 Jan 2025, Michał Kowalczuk via gdal-dev wrote: Thank you, Jukka. I saw this post. The main question is why the DXF driver implementation can explode MultiPolylines and MultiPolygons (which is more complex) and MultiPoint *not*? As I read the DXF 2014 spec http://images.autodesk.com/

Re: [gdal-dev] Fwd: GDAL open flags

2025-01-16 Thread Laurențiu Nicola via gdal-dev
Hi Michał, Without knowing a lot about the underlying implementation, I would expect those flags to make no difference in performance. They exist for safety reasons (so you don't modify a dataset by mistake), not as an optimization. As for the docs, that seems expected. The documentation can't

Re: [gdal-dev] DXF MLTIPOINT

2025-01-16 Thread Rahkonen Jukka via gdal-dev
Hi, * The main question is why... Those who have written the DXF driver (Frank Warmerdam, Alan Thomas, Even Rouault...) may know why but I guess that that their client did not have multipoints in their data, or they were not willing to pay for something that they do not need. Multipoints ar

Re: [gdal-dev] DXF MLTIPOINT

2025-01-16 Thread Michał Kowalczuk via gdal-dev
Thank you, Jukka. I saw this post. The main question is why the DXF driver implementation can explode MultiPolylines and MultiPolygons (which is more complex) and MultiPoint *not*? Michał Kowalczuk czw., 16 sty 2025 o 08:24 Rahkonen Jukka < jukka.rahko...@maanmittauslaitos.fi> napisał(a): > Hi,