I'm having trouble with using QGIS.
I have a GRIB file containing meteorological data, this is loaded in QGIS as raster data if I'm not mistaken.
I also have a shapefile containing a polygon, describing regions within the area covered in the GRIB file.
What I need to know, is how many % of a raster-cell is covered by a region within the polygon. I'm using QGIS.
What I have done so far, is I rasterized the polygon, and used zonal statistics to calculate the SUM and COUNT on the shapefile, and then used the field calculator to calculate the percentage covered. This does not seem to provide the result I hoped for.
Can anyone push me in the right direction?