- #30DayMapChallenge Day 29: Raster #LiDAR DSMs often leave nodata voids at water bodies, breaking shadow modeling. For Rotterdam, I used the 0.5 m AHN4 DSM and filled gaps with my #QGIS script from the Resources Hub 👉 hub.qgis.org/scripts/4 (install via QGIS Hub plugin). 🎦 youtu.be/79yFgVLvuZMNov 29, 2025 08:50