QGIS » QGIS Application

My setup: QGIS 1.8.0 on Debian Squeeze (1.8.0~squeeze1 package) I'm trying to apply a style to a in-memory layer from a .qml file.

If I apply the style with the loadNamedStyle function, the style is correctly applied, with the exception of the labelfield (all the the labels of the features show the default value set in the style). If I go through the GUI, I can verify that the field label is not set.

To rule out problems with the .qml file, loading the same .qml file in the layer properties dialog correctly sets the label with the contents of the desired field.

Here's the code I'm using for testing:

puntoA = QgsPoint(-7.45,42.45)

vl = QgsVectorLayer("Point", "puntos_en_memoria", "memory")
pr = vl.dataProvider()

vl.startEditing()

pr.addAttributes( [ QgsField("name", QVariant.String),
                QgsField("size", QVariant.Double) ] )

fet = QgsFeature()
fet.setGeometry( QgsGeometry.fromPoint(puntoA) )

fet.setAttributeMap( { 0 : QVariant("puntoA"),
                   1 : QVariant(20) } )

pr.addFeatures( [ fet ] )
vl.loadNamedStyle("/path_to_styles/puntos_en_memoria.qml")
vl.commitChanges()
vl.updateExtents()
QgsMapLayerRegistry.instance().addMapLayer(vl)

and this is the content of the .qml file:

<!DOCTYPE qgis PUBLIC 'http://mrcc.com/qgis.dtd' 'SYSTEM'>
<qgis version="1.8.0-Lisboa" minimumScale="0" maximumScale="1e+08" minLabelScale="0" maxLabelScale="1e+08" hasScaleBasedVisibilityFlag="0" scaleBasedLabelVisibilityFlag="0">
  <transparencyLevelInt>255</transparencyLevelInt>
  <singlesymbol>
    <symbol>
      <lowervalue></lowervalue>
      <uppervalue></uppervalue>
      <label>Nodos</label>
      <pointsymbol>hard:circle</pointsymbol>
      <pointsize>4</pointsize>
      <pointsizeunits>pixels</pointsizeunits>
      <rotationclassificationfieldname></rotationclassificationfieldname>
      <scaleclassificationfieldname></scaleclassificationfieldname>
      <symbolfieldname></symbolfieldname>
      <outlinecolor red="0" blue="0" green="0"/>
      <outlinestyle>SolidLine</outlinestyle>
      <outlinewidth>0.26</outlinewidth>
      <fillcolor red="216" blue="88" green="73"/>
      <fillpattern>SolidPattern</fillpattern>
      <texturepath></texturepath>
    </symbol>
  </singlesymbol>
  <customproperties/>
  <displayfield>name</displayfield>
  <label>1</label>
  <labelfield>name</labelfield>
  <labelattributes>
    <label fieldname="name" text="Desconocido"/>
    <family fieldname="" name="Sans"/>
    <size fieldname="" units="pt" value="12"/>
    <bold fieldname="" on="0"/>
    <italic fieldname="" on="0"/>
    <underline fieldname="" on="0"/>
    <strikeout fieldname="" on="0"/>
    <color fieldname="" red="0" blue="0" green="0"/>
    <x fieldname=""/>
    <y fieldname=""/>
    <offset x="0" y="0" units="pt" yfieldname="" xfieldname=""/>
    <angle fieldname="" value="0" auto="0"/>
    <alignment fieldname="" value="center"/>
    <buffercolor fieldname="" red="255" blue="255" green="255"/>
    <buffersize fieldname="" units="pt" value="1"/>
    <bufferenabled fieldname="" on=""/>
    <multilineenabled fieldname="" on=""/>
    <selectedonly on=""/>
  </labelattributes>
  <edittypes>
    <edittype type="0" name="N"/>
    <edittype type="0" name="age"/>
    <edittype type="0" name="alt"/>
    <edittype type="0" name="i"/>
    <edittype type="0" name="lat"/>
    <edittype type="0" name="lon"/>
    <edittype type="0" name="name"/>
    <edittype type="0" name="nodlab"/>
    <edittype type="0" name="pini"/>
    <edittype type="0" name="pmin"/>
    <edittype type="0" name="size"/>
    <edittype type="0" name="theta"/>
  </edittypes>
  <editform></editform>
  <editforminit></editforminit>
  <annotationform></annotationform>
  <attributeactions/>
</qgis>