Hi Stefan,
Excellent - it works fine! Thanks for this solution.
As someone who was quite a bit involved with aggregate expression
functions I should have thought about that solution myself - but
apparently, that was too long ago ...
Many thanks for this solution - So good to have QGIS expression power
users around!
Andreas
On 2022-07-13 11:54, Stefan Giese (WhereGroup) via QGIS-Developer wrote:
Hi Andreas,
you can use the aggregate function for this, something like:
aggregate(layer:='layer1',
aggregate:='concatenate',
expression:="name",
filter:=intersects(
map_get( item_variables( 'Karte 1'), 'map_extent_center' ), $geometry),
concatenator:=',')
and no need to build a point with make_point, the item variable
map_extent_center is already a point.
Best regards
Stefan
Am 13.07.2022 um 09:33 schrieb Andreas Neumann via QGIS-Developer:
Hi,
I would like to use the "overlay_within" expression function, but in
layout context - and in this case I dont have a "current_feature".
The goal is to find out the municipality from the map center of my
main map in the layout (but not in atlas context).
What I tried:
-----------
with_variable(
'current_geometry',
make_point(
x( map_get( item_variables( 'Hauptkarte'), 'map_extent_center' ) ),
y( map_get( item_variables( 'Hauptkarte'), 'map_extent_center' ) )
),
overlay_within(
layer:='Gemeindegrenzen',
expression:=gemeindename
)
)
------------------
But apparently the "overlay_within" geometry function needs a
"$currentfeature" - which I don't have, but could create artificially
with make_point from the map center.
Is there any way to "artificially" create a "$currentfeature", so that
my overlay expression function would work?
Thanks for any ideas,
Andreas
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---------------------------------------------
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