Hi Harrissou,
YES ! You've solved my problem and taught me something I knew
nothing about.
Many thanks.
Steve
On 6/10/2023 8:57 PM, Harrissou s. wrote:
Hi Stephen,
You seem to have fallen in the annotation layer "trap" [0]. There is
no layer behind and polygon deletion is mentioned in the docs I
pointed to. Basically, select it with the "modify annotations" tool on
the same toolbar, and press Del.
To create regular polygon feature, you have to select the layer, turn
it into edit mode and use digitizing tools. Read [1].
Hope that helps.
Harrissou
[0]
https://docs.qgis.org/3.28/en/docs/user_manual/map_views/map_view.html#interaction
[1]
https://docs.qgis.org/3.28/en/docs/user_manual/working_with_vector/editing_geometry_attributes.html#digitizing-an-existing-layer
Le 11 juin 2023 01:22:43 GMT+02:00, Stephen Sacks via QGIS-User
<[email protected]> a écrit :
My intention was to create a new vector layer consisting of
several polygons. I used the CreatePolygon tool to mark the four
vertices of a rectangle. I must have done something wrong because
I've ended up with a polygon that seems to belong to no layer. In
desperation I ran the following python code, hoping to delete the
mysterious polygon, but it's still there. Are some layers not in
the legend? How do I get rid of the polygon?
========================
from qgis.core import QgsProject
from qgis.utils import iface
project = QgsProject.instance()
for lyr in project.mapLayers().values():
lyrName = lyr.name()
print (lyrName)
QgsProject.instance().removeMapLayers([lyr.id()])
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