I intended to digitize the following PNG image in QGIS 3.8 following this instruction:
which is valid for version 2.2 (2+)
In the result some steps don't match to the 3.8 version, therefore I have a few doubts/problems, that I already encountered:
The edit toolbar doesn't match with the tutorial for 2.2 I should have an option to drawing the polyline and polygon, which doesn't appear here. In turn I can only draw the straight line from the topleft corner of the map.
Settings don't provide the "Snapping options"
I have no option for drawing (redrawing) the existing lines on the PDF image
Is anyone able to give me some hint?
Even if I activate the Snapping toolbar I am still unable to draw the lines. I can only mark the polygons as per in the image below: