Re: [Qgis-user] Error in clipping a raster

2017-03-23 Thread Nicolas Cadieux
Hi, A raster can only be square or a rectangle. Try with a square or rectangle region. You can use your current polygone but create a new one using the file extent. After, you can use the original polygone to create a mask. Raster math will then take care of "stamping out" the irregular

[Qgis-user] Error in clipping a raster

2017-03-23 Thread Giacomo Fontanelli
Hello forum I'm trying to cut a raster (geo tif) using a polygon shape. Both are in the same reference system. The polygon is not a regular polygon, but has many vertex. I'm using raster > extraction > clipper, but at the end I receive this error message ERROR 1: Unable to compute a