[Qgis-user] create polygon: underlying image is covered

[Andre Joost]

Am 17.06.2014 23:19, schrieb Thomas Recknagel:
> I want to vectorize land forms from an ortho image, so I make a new
> polygon shape file and create new objects inside it. When I follow the
> outline of the land form, I have the problem that the new polygon covers
> the underlying layer (it is red and only slightly transparent), so I
> cant see the structures of the ortho image anymore. Is there a way to
> create new polygons, but only have the border of the polygon drawn while
> creating it? I couldnt find such an option in QGIS.

Settings -> Options -> Digitizing

You can change the colour of the rubber line. I have changed the alpha 
channel to 100.

HTH,
André Joost