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Raster to polygon,output polygons are larger than input raster

Question asked by Ditlev on May 19, 2015
Latest reply on May 25, 2015 by Ditlev

Hey everyone.

I am using a raster layer (raster1) to clip another raster layer (raster2). As far as I understand I need to use the raster to polygon tool on raster 1 to be able to do this as you cannot clip a raster with another raster. If this is wrongly interpreted, please let me know.

 

My problem is that the polygon output is bigger the the raster input. The polygons are filling out many of the gabs between the raster pixel, resulting in a polygon that is much larger than the input raster. How can I make it "finer" so that It only draws polygons where there is actually a relevant pixel?

Thank you very much.

Best regards

Ditlev Reventlow.

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