[gdal-dev] GDAL GeoPackage Tiled Gridded Elevation test datasets

Even Rouault even.rouault at spatialys.com
Fri Feb 17 06:28:24 PST 2017


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 :


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.


Spatialys - Geospatial professional services
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