labelinglegendprint-composerqgis
In a legend of a map I want to label the icon with a number, just as it appears in the map. As example, I have different parcels and every parcel has a number. In the map, the parcels are labelled. In the legend, there only appears the border of the parcel, but not the label inside. Is it possible to get just a random number inside of the icon within the legend?
Hope you understand my question.
I've sort of replicated your situation.
Not sure if there's an easier way to do it, but the following code snippet works for me (I'm using QGIS v.2.8). To use it, activate your layer in the ToC, open the QGIS Python console, and copy&paste the code there.
lyr = iface.activeLayer()
renderer = lyr.rendererV2()
children = renderer.rootRule().children()
fieldName1 = "Klass"
fieldName2 = "Percentage"
for child in children: # Iterate through groups
if child.filter():
feat = next(lyr.getFeatures(QgsFeatureRequest(child.filter())), None)
if feat:
child.setLabel( feat.attribute(fieldName1) + " (" + feat.attribute(fieldName2) + ")")
for subChild in child.children(): # Iterate through subgroups
if subChild.filter():
feat = next(lyr.getFeatures(QgsFeatureRequest(subChild.filter())), None)
if feat:
subChild.setLabel( feat.attribute(fieldName1) + " (" + feat.attribute(fieldName2) + ")")
The code assumes fields to concatenate are of type String.
After the code runs, open the layer properties and you should see the new concatenated labels. Click on Ok to refresh your legend.
I obtain this:
Let me know if you have troubles with it.
I'm reasonably certain there's not a good way to do this. Here's a terrible, terrible workaround.
Cover the legend text that you want italicized with a label with the same text in italics. Select the legend and the label and Group Items so you don't accidentally move one without the other.
Ta DA!
Sadly, this isn't a joke. I used to do this a lot. Then I decided to just live with un-italicized botanical names, and hope that my former Plant Systematics professor never sees one of my maps. At least the genus is capitalized and the specific epithet is lower case.
Best Answer
An alternative workaround is to create a symbol with fake labels using font markers. You still won't have all the font styling options that you have in labeling but at least you don't need to resort to adding an overlay textbox in print composer.