0
votes
2answers
72 views

Conversion of diagonally adjacent pixels into one polygon?

I am trying to vectorize a raster whose digital numbers indicate different classes they belong to. ArcGIS and QGIS yield similar results: separate shapes out of pixels sharing the class that are ...
2
votes
0answers
78 views

Creating water surface from vector line in QGIS

I want to create a raster surface representing the flood level in a creek based on output from a 1D hydraulic model. I receive a 3D profile of the water surface in a creek line as a 3D Polyline ...
2
votes
1answer
151 views

Inland / crater watershed delination

Even though watershed delineation is a quite popular matter here, I have what seems to be a somewhat unusual demand. I start with a DEM which is constituted of a series of craters, all centered on ...
10
votes
3answers
3k views

How to do hydrological modeling in QGIS?

Can someone please direct me to a tutorial where I can learn more about hydrological modelling? I am particularly interested in learning how to model flooding using data from gauging stations along ...