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Articles (2) tagged with #compression

Experiments with the global JAXA ALOS World 30m elevation model on AWS S3

## TL;DR Using "this one weird GDAL creation option" `-co PREDICTOR=2` shaves 325Gb off the ALOS World global 30m elevation model. Data available in requester pays S3 bucket via GDAL virtual file system at `/vsis3/geofolio-public/jaxa_alos_world_30m/jaxa_alos_world_30m.vrt`. ## Data access I...

Guide to GeoTIFF compression and optimization with GDAL

With the fast ZSTD compression (GDAL 2.3 and above) and Limited Error Raster Compression (GDAL 2.4) becoming available in our favourite geospatial toolkit, I thought it would be interesting to run some benchmarks and write a guide on compressing and optimizing GeoTIFF files using the latest...