Hi Even, This episode is a reminder that making quotation marks part of the GDAL filename syntax was a mistake. Reverting it would be a big effort, but at the very least we should stop propagating it. Specifically, if a new driver with subdataset capabilities were to be written tomorrow it should be forbidden from relying on quotation marks
On Fri, Nov 22, 2024 at 5:32 AM Even Rouault via gdal-dev < gdal-dev@lists.osgeo.org> wrote: > If you struggle with quoting, the easiest would be to "alias" complex > connections strings as VRT with > > gdal_translate "STACIT: .. complex stuff here.." my_stacit.vrt > > and the use "vrt://my_stacit.vrt?...." > > There should be hardly any performance overhead doing that since the VRT > driver is optimized to detect situations like that where it is used as a > passthrough. > > On Linux/Unix you can actually avoid creating an actual vrt file and just > create a symbolic link: > > $ ln -sf "STACIT:\ > "https://planetarycomputer.microsoft.com/api/stac/v1/search?collections=naip&bbox=-100,40,-99,41&datetime=2019-01-01T00:00:00Z%2F..\"; > <https://planetarycomputer.microsoft.com/api/stac/v1/search?collections=naip&bbox=-100,40,-99,41&datetime=2019-01-01T00:00:00Z%2F..%5C>:asset=image" > my_stacit > $ gdalinfo vrt://my_stacit > > That's a trick I use often to make it easier in QGIS to use such non-file > datasets. > > Le 22/11/2024 à 10:53, Rahkonen Jukka via gdal-dev a écrit : > > Hi, > > > > In case of STACIT, I can’t discover how to use the vrt:// connection > string > https://gdal.org/en/latest/drivers/raster/vrt.html#vrt-connection-string > with subdataset name (or even without). Can you? > > Start with > gdalinfo "STACIT:\ > https://planetarycomputer.microsoft.com/api/stac/v1/search?collections=naip^&bbox=-100,40,-99,41^&datetime=2019-01-01T00:00:00Z%2F..\ > <https://planetarycomputer.microsoft.com/api/stac/v1/search?collections=naip%5E&bbox=-100,40,-99,41%5E&datetime=2019-01-01T00:00:00Z%2F..%5C> > and try to show a vrt:// string for > SUBDATASET_1_NAME=STACIT: > https://planetarycomputer.microsoft.com/api/stac/v1/search?collections=naip&bbox=-100,40,-99,41&datetime=2019-01-01T00:00:00Z%2F..:asset=image > > > > -Jukka- > > > > *Lähettäjä:* Michael Sumner <mdsum...@gmail.com> <mdsum...@gmail.com> > *Lähetetty:* perjantai 22. marraskuuta 2024 11.10 > *Vastaanottaja:* Rahkonen Jukka <jukka.rahko...@maanmittauslaitos.fi> > <jukka.rahko...@maanmittauslaitos.fi> > *Aihe:* Re: [gdal-dev] Issue with the STACIT usage examples > > > > > > On Fri, 22 Nov 2024, 03:52 Rahkonen Jukka via gdal-dev, < > gdal-dev@lists.osgeo.org> wrote: > > Understood, and good reason to start using the new gdalinfo convenience > option "-sd" for selecting sub-datasets by their index. > > > > Do beware that index isn't necessarily reliable (good old netcdf), it can > change through an ostensibly consistent dataset while name does remain > robust. > > > > vrt:// has sd_name for this purpose, and to avoid driver declaration with > full subdataset syntax. > > > > I may have considered sd_name for gdalinfo ?? probably a good idea. And > maybe something to put on the 4.0 break list 🙏 > > > > Cheers, Mike > > > > gdalinfo "STACIT:\ > https://paituli.csc.fi/geoserver/ogc/stac/v1/search?collections=corine_land_cover_at_geocubes\"; > -sd 2 > > > > -Jukka- > > > > *Lähettäjä:* Even Rouault <even.roua...@spatialys.com> > *Lähetetty:* torstai 21. marraskuuta 2024 18.36 > *Vastaanottaja:* Rahkonen Jukka <jukka.rahko...@maanmittauslaitos.fi>; > Daniel Evans <daniel.fred.ev...@gmail.com> > *Kopio:* 'gdal-dev@lists.osgeo.org' (gdal-dev@lists.osgeo.org) < > gdal-dev@lists.osgeo.org> > *Aihe:* Re: [gdal-dev] Issue with the STACIT usage examples > > > > > > > > However, the subdataset names on the list are not accepted as-is without > small edits. > Does not work: > gdalinfo STACIT: > "https://paituli.csc.fi/geoserver/ogc/stac/v1/search?collections=corine_land_cover_at_geocubes"; > <https://paituli.csc.fi/geoserver/ogc/stac/v1/search?collections=corine_land_cover_at_geocubes> > :asset=1000m > > That's "expected". Subdataset names are designed to be used verbatim by > GDALOpen(). The STACIT driver isn't aware it has been invoked from a shell > and which quoting rules would apply. > > > > > -- Sean Gillies
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