I use Contour plugin in QGIS to produce a filled contour map (consecutive value ranges are marked by colours). The map covers only the area between input points with assigned value of interpolated data. I need my map extended to a larger area, corresponding to another polygon and thus I want QGIS to extrapolate the map produced by Contour plugin. Or come up with the result I want to see any other way.
I don't know how to approach this.
