Gil, > > I got two questions: > 1) I have a question about something I believe is a bug, I recently upgraded > from 2.0.2 to 2.3.1, when using gdal_translate to convert a GeoTiff to > GeoPackage it doesn't create the GeoPackage's metadata tables > (gpkg_metadata/gpkg_metadata_reference). > If I create without the tiling scheme, like this, it works just fine, it > creates the tables with data in them: gdal_translate.exe -of GPKG a.tif > b.gpkg > > When specifying the tiling scheme, it doesn't create the tables (tried > GoogleCRS84Quad / InspireCRS84Quad): gdal_translate.exe -co > TILING_SCHEME=GoogleCRS84Quad -of GPKG a.tif b.gpkg > When specifying like the above and setting CREATE_METADATA_TABLES to YES, it > creates the tables but they are empty: gdal_translate.exe -co > TILING_SCHEME=GoogleCRS84Quad -of GPKG a.tif b.gpkg --config > CREATE_METADATA_TABLES YES > I don't assume this is the wanted behavior, in 2.0.2 it worked fine.
From my testing, it didn't work fine in 2.0.2 either: it just created empty tables. I've just fixed that issue in GDAL master and backported to 2.3 branch. > > 2) I have another question relating to GoogleCRS84Quad, I know this may not > be the best place to ask this and you may ignore this if you wish, I am > trying to make sure I understand the specs correctly, as far as I > understand level 0 has 1 tile that covers the world. Is there any alternate > definition that says otherwise? In > http://docs.opengeospatial.org/is/13-082r2/13-082r2.html which is a later > dated document than the one in GDAL specs, it says that the level -1 has > one tile and 0 has two tiles, I may just be mixing two different > definitions, which I assume I am, but I was hoping if someone could > clarify. Interesting. I've added that "clarification" to the driver doc: +NOTE: <a href="http://docs.opengeospatial.org/is/ 13-082r2/13-082r2.html#30">OGC WMTS Simple Profile 13-082r2</a> +changed the definition of GoogleCRS84Quad (so not implemented by the driver). +The new definition includes a -1 level (that cannot be modeled in GeoPackage given +constraints on zoom_level being positive or 0), with a single tile at origin -180,90 +and whose bottom 128 lines are empty. Levels 0 or greater are identical to the +InspireCRS84Quad tiling scheme. So for practical purposes, InspireCRS84Quad in +GeoPackage is conformant to the new GoogleCRS84Quad definition. Even -- Spatialys - Geospatial professional services http://www.spatialys.com _______________________________________________ gdal-dev mailing list gdal-dev@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/gdal-dev
