indexed to the cell.
A geospatial practice in the making — built in public over six months. The first project, mapping where Spain actually lives, ships May 26, 2026.
Every business problem has a location. Most companies leave that signal on the floor. We pick it up, give it an address, and put it to work.
Where does Spain actually live?
The opening project bins Spain's population into H3 cells from the INE Padrón, then cross-checks the result against NASA's Black Marble night-lights — a test of where people really are, not just where the registry lists them.
It's the first chapter of a three-part series on Spain's demographic and housing story.
Population
Index
Validation
Where does Spain actually live?
Population density per H3 cell, cross-validated against NASA Black Marble night-lights.
Read the build →The 2020–2024 reshuffling
Internal migration flows across Spain, traced year over year.
Coming soon →Where Spain grew but didn't build
Housing pressure where migration meets prices and the pace of construction.
Coming soon →See all five projects → Projects
Essays on the methods behind each project — the indexing schemes, the data sources, the trade-offs worth arguing about. The first pieces ship alongside P-01.
Prospectra is a geospatial analytics practice, built in public. Spain has a gap: the traditional GIS shops don't run on the lakehouse, and the big Databricks consultancies don't do geospatial. Prospectra is being built to live in that intersection — Databricks-native spatial pipelines on Spain's open data.
Right now it's week 5 of a six-month sprint: twenty lessons, five portfolio projects, each shipping as a public article. Block 1 of the curriculum is cleared; the first project ships May 26. This site is the stage where the work goes public.