labelingqgis
Has anyone been using callout labelling with QGIS, either trunk or stable?
Used for clustered points. That means the point stays where it is, the label maybe moved if required and a leader (plain or pointed) shows the linkage between the label and the point.
How could I do it (you know what I mean, no coding….)?
With ArcGIS Maplex Label Engine
Switch on the View Unplaced Labels but clicking the icon on
the toolbar.
Displays the labels that could not be placed on the map
http://resources.arcgis.com/en/help/main/10.1/index.html#//00s800000054000000
There maybe a more settings that are causing the labels not to be placed. See http://resources.arcgis.com/en/help/main/10.1/index.html#//00s800000071000000 for reference
Forcing all labels to display this is the last resort Check the Never remove (place overlapping) check box.
Click the Label Manager button Label Manager on the Labeling toolbar.
Check the check box next to the layer you want to label.
Choose a label class under the layer.
Click the Properties button.
Click the Conflict Resolution tab.
Check the Never remove (place overlapping) check box.
(There should be no difference in the Maplex Labeling Engine in 9.2 and 10.1)
I had the same question and looked everywhere! Finally a solution - you need to use "TIN interpolation". This video explains it perfectly: https://www.youtube.com/watch?v=PhJ77uHlTJA
It demonstrates other processes as well but the main thing is they used contour line data and created a DEM. Really good explanation as well.
Key tools used:
Best Answer
You can do this without any coding but just to follow the points carefully...
1) Download & add Qgis plugin 'Easy Custom Labelling' from Qgis Official repository. Run the first part of the plugin, "generate centroids".
2) Label your layer using 'Labeling' tool & move overlapping labels manually (Using Label Move-Present at Labeling Toolbar) after toggoling editing mode.
3) after saving the necessary edits...run the 'Easy Custom Labelling' plugin and select 'generates Lines from Labels' button (This will create your desired Leader as a separate .shp file).
For safety, when the tool asks for a projection (CRS), use the same as the layer which is being labelled. Your mileage may vary if you choose another.....
Check the snap attached for further understanding...
...Thanks