I have a shapefile with contours and their heights.
Is it possible to make a DEM from contours in QGIS without using GRASS?
I found Creating DEM from contours using ArcGIS Desktop? but the answer is for ArcGIS Desktop.
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Yes, there are several options available in QGIS:
Raster > Grid (Interpolation). GDAL's interpolation is more robust because you can use other interpolation algorithms (IDW, nearest neighbor, moving average, etc.). This tools only works for point data.
r.surf.*). You need convert your shapefile into a GRASS database to use the GRASS modules in QGIS.
GRASS has also many options
available one way or another also trough the QGIS/GRASS plugin.
I just posted this answer on another thread that was asking the same question. This is by far the easiest method that I have found.
I had the same question and looked everywhere! Finally a solution - you need to use "TIN interpolation". This video explains it perfectly: https://www.youtube.com/watch?v=PhJ77uHlTJA
It demonstrates other processes as well but the main thing is they used contour line data and created a DEM. Really good explanation as well.
Key tools used:
The question is old, but as it is ranked high in Google search, so I think it is helpful to say QGIS has built-in interpolation tools:
However, the tutorial is also old.
For QGis 3.2, you can find it in the PROCESSING TOOLBOX, or in the RASTER > ANALYSIS > GRID menu: