GUILLAUME SUEUR
I am an independent GIS consultant and the founder of Geomermaids, with over 20 years of geospatial experience spanning national and regional spatial data infrastructure projects in France and consulting work now based near Boston. I am a long-time open source advocate, focused on cloud-native and the emerging geospatial stacks. My current work centers on building lean, automatable spatial data pipelines and helping teams move heavy geospatial workloads onto modern, open formats.
Sessions
Hazard datasets are critical and exhausting to work with: shapefiles, oversized polygons, per county distribution. This workshop walks through a pattern that turns this kind of data into a clean, query-optimized GeoParquet asset — using DuckDB, Python, and object storage.
DuckDB complex geospatial workloads stay tricky: the planner reasons about columns while complexity hides in the geometry field. We will read planner output, see why PostGIS reflexes mislead, and tune queries differently for GeoParquet over httpfs versus native tables.