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<font size="4">Hi Harrissou,<br>
YES ! You've solved my problem and taught me something I knew
nothing about. <br>
Many thanks.</font><br>
<font size="5">Steve</font><br>
<br>
<br>
<br>
<div class="moz-cite-prefix">On 6/10/2023 8:57 PM, Harrissou s.
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:99B82E9C-1AAC-44A1-A7E3-61CEED48162E@gmail.com">
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<div dir="auto">Hi Stephen,<br>
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.<br>
<br>
To create regular polygon feature, you have to select the layer,
turn it into edit mode and use digitizing tools. Read [1].<br>
<br>
Hope that helps.<br>
Harrissou<br>
<br>
[0] <a
href="https://docs.qgis.org/3.28/en/docs/user_manual/map_views/map_view.html#interaction"
moz-do-not-send="true" class="moz-txt-link-freetext">https://docs.qgis.org/3.28/en/docs/user_manual/map_views/map_view.html#interaction</a><br>
[1] <a
href="https://docs.qgis.org/3.28/en/docs/user_manual/working_with_vector/editing_geometry_attributes.html#digitizing-an-existing-layer"
moz-do-not-send="true" class="moz-txt-link-freetext">https://docs.qgis.org/3.28/en/docs/user_manual/working_with_vector/editing_geometry_attributes.html#digitizing-an-existing-layer</a></div>
<br>
<br>
<div class="gmail_quote">
<div dir="auto">Le 11 juin 2023 01:22:43 GMT+02:00, Stephen
Sacks via QGIS-User <a class="moz-txt-link-rfc2396E" href="mailto:qgis-user@lists.osgeo.org"><qgis-user@lists.osgeo.org></a> a
écrit :</div>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt
0.8ex; border-left: 1px solid rgb(204, 204, 204);
padding-left: 1ex;"> <font size="4">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? <br>
========================<br>
from qgis.core import QgsProject<br>
from qgis.utils import iface<br>
<br>
project = QgsProject.instance()<br>
for lyr in project.mapLayers().values(): <br>
lyrName = lyr.name()<br>
print (lyrName)<br>
QgsProject.instance().removeMapLayers([lyr.id()]) <br>
<br>
<br>
<br>
</font> </blockquote>
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