I want to convert my Geotiff map into the shapefile.

For this purpose, I used the GDAL->Raster Conversion -> Polygonize option.

enter image description here

I have the status "Processing algorithm" for nearly 2 hours!

I found the similar problem here:

Long Time for conversion raster file to vector in QGIS

but the guy had the file over 1GB. I already clipped my Geotiff map trimming down the size to 30MB.

Why does it take so long then?

Have I missed something?

Or shall I use other options...

Converting Raster to vector and creating polygons based on each pixel using QGIS

enter image description here

  • Can you show us a screenshot of your raster? How complex is it? Commented Oct 22, 2020 at 10:00
  • This is the Ordnance Survey map covering the hamlet. See above
    – Geographos
    Commented Oct 22, 2020 at 10:12


Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Browse other questions tagged or ask your own question.