I am looking to replicate a tool that is available in Geospatial Modelling Environment (GME) within QGIS, preferably not using GRASS. The tool is isectlinerst (Intersect Lines With Raster) http://www.spatialecology.com/gme/isectlinerst.htm
I am hoping to have a tool that can extract raster information (i.e. slope) for an entire linear network (i.e. roads). I have seen other post on here that show a rasterize process, but I am looking to maintain the vector input data and add the attributes to the data.
Best Answer
SAGA Profiles from lines may satisfy your needs, though it does not directly return slope or other information. It returns rather raw data of cells intersected by your line layer.
When you give the raster (DEM) and linestrings (roads), it will return a
Profiles
(points) along the line.Each point represents the cell center of the raster along the line. The attribute table is populated with information from your raster:
You will need to calculate slope and/or other statistics, but I think you would be more confident about the result.