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I have a raster file which is only partly covered by a shapefile with polygons.

Now I want to apply raster::extract in order to get the mean value for each polygon based on the rasterfile - But some features of the shapefile are complete outside of the rasterfile.

If I'm using snow clusters in order to speed the extraction up - I get the following error: R raster::extract Error in .local(x, y, ...) : cluster error at polygon: 1

Do you have an idea, how to resolve this issue?

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  • Can you make a simple reproducible example or even just some sample code? I can never remember how to run over snow clusters...
    – Spacedman
    Commented Nov 5, 2019 at 15:43
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    Should be handled out of the box with the exactextractr package, if you want to give it a try (I'm the author.) Should remove the need to use snow.
    – dbaston
    Commented Nov 5, 2019 at 17:49
  • @dbaston thank you for your package! This works much fast compared to classical raster package and you can also use it with snow clusters! - Thanks!
    – Marcel Gangwisch
    Commented Nov 8, 2019 at 14:26

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