Tutoriel: Créer une carte du niveau d'eaux souterraines à partir de données de forage et d'un MNT: Echantillonner les élévations du MNT aux forages | OCWGIS
![raster - Point sampling tool returning no value for for extractions in QGIS - Geographic Information Systems Stack Exchange raster - Point sampling tool returning no value for for extractions in QGIS - Geographic Information Systems Stack Exchange](https://i.stack.imgur.com/RbUTt.png)
raster - Point sampling tool returning no value for for extractions in QGIS - Geographic Information Systems Stack Exchange
![raster - Receiving NULL values from Point Sampling Tool in QGIS - Geographic Information Systems Stack Exchange raster - Receiving NULL values from Point Sampling Tool in QGIS - Geographic Information Systems Stack Exchange](https://i.stack.imgur.com/uhXJm.png)