Hi, I've just committed into GDAL trunk read/write support for the GeoPackage tiled grided elevation data extension.
I've generated a few sample datasets from SRTMHGT datasets. They are available (under the terms of the source datasets https://mapzen.com/documentation/terrain-tiles/attribution/ ) at : http://even.rouault.free.fr/geopackage/N49E002_int16.gpkg http://even.rouault.free.fr/geopackage/N45E006_uint16.gpkg http://even.rouault.free.fr/geopackage/N49E002_float32_tiff.gpkg http://even.rouault.free.fr/geopackage/N49E002_float32_png.gpkg They have been generated with the following procedure: wget https://s3.amazonaws.com/elevation-tiles-prod/skadi/N49/N49E002.hgt.gz gunzip N49E002.hgt.gz wget https://s3.amazonaws.com/elevation-tiles-prod/skadi/N45/N45E006.hgt.gz gunzip N45E006.hgt.gz gdal_translate N49E002.hgt N49E002_int16.gpkg -of GPKG --config CREATE_METADATA_TABLES NO gdaladdo -r average N49E002_int16.gpkg 2 4 8 16 gdal_translate N49E002.hgt N49E002_float32_tiff.gpkg -of GPKG -ot Float32 -co TILE_FORMAT=TIFF --config CREATE_METADATA_TABLES NO gdal_translate N49E002.hgt N49E002_float32_png.gpkg -of GPKG -ot Float32 -co TILE_FORMAT=PNG --config CREATE_METADATA_TABLES NO gdal_translate N45E006.hgt N45E006_uint16.gpkg -of GPKG -ot UInt16 -a_nodata none --config CREATE_METADATA_TABLES NO I'd appreciate feedback from other implementation on those datasets. And I'm still interested in, easily accessible, test datasets from other implementations. Even -- Spatialys - Geospatial professional services http://www.spatialys.com
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