Creating leader lines for moved labels

Question

With a lot of help from gis.stackexchange.com I've created leader lines for point symbols. The lines are based on a geometry generator symbology:

Shortening line geometry using expression dialog in QGIS?

Now, I want to implement leader lines for moved labels. It's very importent to me, that the lines start at the center of the labels and end at the point coordinates (or vice versa).

-- Geometry generator:
make_line(
    make_point(label_x, label_y),
    $geometry)

Once again, the lines are covered by the labels:

Is there a way to address the label boxes and shorten the leader lines? I suppose this is quite a tricky question :/

Answer 1

Firstly, this is a really neat solution! I solved this using a database view (a bit of overkill, but it worked).

My suggestion is to use a background and fill on the label.

Or, looking here, you may be able to chain together a buffer and clip type solution.

difference(make_line(make_point( "x" ,  "y" ), $geometry), buffer(make_point( "x" ,  "y" ),1))

I just tested the above, and it works (I have different fields than you, but it proves the point). The use of the geometry generator is really flexible, so you could have the buffer distance a field too, dependent on symbology perhaps?

I'm not sure what's happening with point 'three', but I guess the anchor point is off to the left a bit.

Answer 2

I currently work on a fork of easy custom labeling plugin, to enable automatic creation of label and linked header line.

Have a look at : EasycustomLabaling

Download it, unzip it, and paste the 'EasyCustomLabeling' repertory in the the repertory of your QGIS plugin repertory. Reload QGIS.