Data projects I document here — from idea, through data, to deployment.
VIE/BTS Aviation Tracker
I live in Bratislava, and lately it’s hard to miss how much is being written about our airport — record passenger growth month after month. In parallel, another story played out: both Wizz Air and Ryanair significantly scaled back their presence in Vienna in March 2026, after Austria introduced an aviation tax that Slovakia doesn’t have. These two stories are really one. The neighboring airport is picking up exactly what the other is losing. ...