I have incorporated a geometry generator into a style in QGIS 3.4 which creates a callout line from a feature to its relevant spatial position.
For reasons out of my control our projects use CRS: EPSG:27700 but some of the layers we need to import use CRS: EPSG:4326. QGIS handles this fine and can plot the features, but the geometry generator cannot.
I know I could convert beforehand but this is not practical for all our users so I just want the expression to handle this for them.
I am looking for a method to convert from
'27700' within the expression but I am not currently aware if this is possible.
My current geometry generator expression
make_line(make_point($x, $y), make_point("Longitude", "Latitude"))
"Latitude" fields relate to the fields in the relevant layer which is projected with EPSG:4326.