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I have got a raster (.tif) which has areas with "no data". I want to extract just the area where i have data.

I can do this with gdal:polygonize (1) and native:dissolve (2).

But especially the first step needs a long time to build all the small polygons.

Does anybody know a faster workflow for this?

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1 Answer 1

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The following workflow is much faster:

  1. Raster Calculator: "LAYERNAME@1" = "LAYERNAME@1"

  2. gdal:polygonize

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