Hi Régis, thanks a lot for your insights. Finally I caught the issue. It's easy, since the labelling layer is a view, everytime this view was updated, the id, changed, and then the messy thing happened. I fixed already. Again, thanks ^^
El lun., 11 nov. 2019 a las 18:43, Régis Haubourg (<[email protected]>) escribió: > Oh ok, expression taken from label connector plugin :) > > Be aware that it can be slow with big geometries and that it is a > temporary approach before having a native one in core (which I'd be > pleased to have implemented if anyone supports it). > > So it seems you have something messing the unique id's that auxiliary > storage database uses to link your data and qgis projected data when > you add a new feature. Are you sure your ID's and foreign keys beahve > like expected on the database side? For the auxiliary storage, a new > feature shouldn't have any x-y value and thus the label should fall > back to the automatic labeling options. In your case, it seems the > newly created feature inherits from the id of another feature. This is > a common case in labeling, and I remember the famous Mapinfo label > callout mix ups that occured when compressing datasets, just because > it didn't use real id's, but line number to identify features. > > > Régis > > Le lun. 11 nov. 2019 à 17:33, Luís Miguel Royo Pérez > <[email protected]> a écrit : > > > > Of course, here is: > > > > case when "auxiliary_storage_labeling_positionx" < $x and > "auxiliary_storage_labeling_positiony" > $y and > abs("auxiliary_storage_labeling_positiony"-$y) < > abs("auxiliary_storage_labeling_positionx"-$x) THEN > > make_line($geometry, > make_point($x-abs("auxiliary_storage_labeling_positiony"-$y),"auxiliary_storage_labeling_positiony"),make_point("auxiliary_storage_labeling_positionx", > "auxiliary_storage_labeling_positiony")) > > when "auxiliary_storage_labeling_positionx" < $x and > "auxiliary_storage_labeling_positiony" > $y and > abs("auxiliary_storage_labeling_positiony"-$y) >= > abs("auxiliary_storage_labeling_positionx"-$x) then > > make_line($geometry, > make_point($x,abs("auxiliary_storage_labeling_positionx"-$x)+$y),make_point("auxiliary_storage_labeling_positionx", > "auxiliary_storage_labeling_positiony")) > > when "auxiliary_storage_labeling_positionx" < $x and > "auxiliary_storage_labeling_positiony" < $y and > abs("auxiliary_storage_labeling_positiony"-$y) < > abs("auxiliary_storage_labeling_positionx"-$x) THEN > > make_line($geometry, > make_point($x-abs("auxiliary_storage_labeling_positiony"-$y),"auxiliary_storage_labeling_positiony"),make_point("auxiliary_storage_labeling_positionx", > "auxiliary_storage_labeling_positiony")) > > when "auxiliary_storage_labeling_positionx" < $x and > "auxiliary_storage_labeling_positiony" < $y and > abs("auxiliary_storage_labeling_positiony"-$y) >= > abs("auxiliary_storage_labeling_positionx"-$x) then > > make_line($geometry, > make_point($x,$y-abs("auxiliary_storage_labeling_positionx"-$x)),make_point("auxiliary_storage_labeling_positionx", > "auxiliary_storage_labeling_positiony")) > > when "auxiliary_storage_labeling_positionx" >= $x and > "auxiliary_storage_labeling_positiony" > $y and > abs("auxiliary_storage_labeling_positiony"-$y) > > abs("auxiliary_storage_labeling_positionx"-$x) then --quadrant ur alternatif > > make_line($geometry, > make_point($x,"auxiliary_storage_labeling_positiony"-abs("auxiliary_storage_labeling_positionx"-$x)),make_point("auxiliary_storage_labeling_positionx", > "auxiliary_storage_labeling_positiony")) > > when "auxiliary_storage_labeling_positionx" >= $x and > "auxiliary_storage_labeling_positiony" > $y and > abs("auxiliary_storage_labeling_positiony"-$y) < > abs("auxiliary_storage_labeling_positionx"-$x) then > > make_line($geometry, > make_point($x+abs("auxiliary_storage_labeling_positiony"-$y),"auxiliary_storage_labeling_positiony"),make_point("auxiliary_storage_labeling_positionx", > "auxiliary_storage_labeling_positiony")) > > when "auxiliary_storage_labeling_positionx" >= $x and > "auxiliary_storage_labeling_positiony" <= $y and > abs("auxiliary_storage_labeling_positiony"-$y) > > abs("auxiliary_storage_labeling_positionx"-$x) THEN > > make_line($geometry, > make_point($x,$y-abs("auxiliary_storage_labeling_positionx"-$x)),make_point("auxiliary_storage_labeling_positionx", > "auxiliary_storage_labeling_positiony")) > > when "auxiliary_storage_labeling_positionx" >= $x and > "auxiliary_storage_labeling_positiony" <= $y and > abs("auxiliary_storage_labeling_positiony"-$y) < > abs("auxiliary_storage_labeling_positionx"-$x) THEN > > make_line($geometry, > make_point($x+abs("auxiliary_storage_labeling_positiony"-$y),"auxiliary_storage_labeling_positiony"),make_point("auxiliary_storage_labeling_positionx", > "auxiliary_storage_labeling_positiony")) > > END > > > > > > > > > > El lun., 11 nov. 2019 17:15, Régis Haubourg <[email protected]> > escribió: > >> > >> Hi Luis, can you share your geometry generator expression please? > >> regards > >> Régis > >> > >> Le lun. 11 nov. 2019 à 09:04, Luís Miguel Royo Pérez > >> <[email protected]> a écrit : > >> > > >> > Hello everyone, > >> > > >> > I'm developing a QGIS plugin along with PostGIS and I'm facing some > problems with labeling. This plugin creates several layers and tables. Some > of these layers are views (labeling layers), so if I edit the one fo the > source layer the view changes and then the label. I explain more detailed: > >> > > >> > I have the following: > >> > > >> > One layer. Let's call it layer1. > >> > One none spatial table. Let's call it table1. > >> > One spatial view from these other two layers layer1 and table1 meant > for labeling. Let's call it labelView1. > >> > > >> > The point is this, when I edit table1 adding a new element linked by > a foreign key with layer1. The label position in labelView1 changes into a > messy thing. The Style of labelView1 is the following: > >> > > >> > Symbol is a geometry generator. Since I want to create callouts from > label to the geometry, wich is a point. > >> > The position of the label is saved on project. In the qgd file. > >> > > >> > I have seen this behaviour in Windows10 and in Ubuntu. The QGIS > version is 3.4, but I tried to move to the new 3.10 version of QGIS, with > the callouts new feature, but is the same result. > >> > > >> > As well I tried to reproduce it in a much simple way, but without > succed, that's why I want to share a link with a GIF file showing this > issue: > >> > > >> > https://gifyu.com/image/vMY7 > >> > > >> > I've done the same but without fixed position,and the labels don't > move, but the geometry_generator does. > >> > > >> > Is this a bug? Is there any way to prevent it? > >> > > >> > Thanks. > >> > -- > >> > Luís Miguel Royo Pérez. > >> > Analista-Programador GIS > >> > C/ Antic Regne de Valencia nº 4. Manises (Valencia) > >> > Teléfono:+34 679846103 > >> > webs: > >> > inisig.com > >> > geofibra.com > >> > > >> > > >> > _______________________________________________ > >> > QGIS-Developer mailing list > >> > [email protected] > >> > List info: https://lists.osgeo.org/mailman/listinfo/qgis-developer > >> > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-developer > -- Luís Miguel Royo Pérez. Analista-Programador GIS C/ Antic Regne de Valencia nº 4. Manises (Valencia) Teléfono:+34 679846103 webs: inisig.com geofibra.com
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