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I'm attempting to create a DEM in QGIS from contours using the "Rasterize (vector to raster)" function.

How do I create a DEM that is clean and does not have blank spots?

DEM

contours

settings

Lilium
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Sam Wilder
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  • I would use a simple filtering tool, for instance, a median filter with a tiny smoothing value (or find the best threshold?) – Gery Feb 10 '22 at 23:56

1 Answers1

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The rasterize tool is only making a raster version of your line data. Each 300 ft x 300 ft pixel is picking up a value of one of the contour lines that would overlap that pixel. This is the wrong choice for making a surface model.

Use one of the interpolation tools. Descriptions for using these tools are available here.

Or see this question: Creating DEM from contours in QGIS?

GBG
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