Created
October 28, 2019 12:51
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Create advanced labeling strategy for a gvSIG layer #gvsig #scripting
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# encoding: utf-8 | |
import gvsig | |
gvsig.uselib.use_plugin("org.gvsig.labeling.app.mainplugin") | |
from gvsig import geom | |
from org.gvsig.labeling.label import GeneralLabelingFactory | |
from org.gvsig.fmap.mapcontext.rendering.legend.styling import IPlacementConstraints | |
from org.gvsig.symbology.fmap.mapcontext.rendering.legend.styling import LabelClassFactory | |
from org.gvsig.symbology import SymbologyLocator | |
def main(*args): | |
# Creating new layer | |
ft = gvsig.createSchema() | |
ft.append("ID", "INTEGER") | |
ft.append("GEOMETRY", "GEOMETRY") | |
ft.get('GEOMETRY').setGeometryType(geom.POINT,geom.D2) | |
layer = gvsig.createShape(ft, prefixname="testSymbol") | |
store = layer.getFeatureStore() | |
layer.edit() | |
layer.append({"ID":1,"GEOMETRY":geom.createPoint(geom.D2, 10, 20)}) | |
layer.append({"ID":2,"GEOMETRY":geom.createPoint(geom.D2, 20, 20)}) | |
layer.append({"ID":3,"GEOMETRY":geom.createPoint(geom.D2, 20, 30)}) | |
layer.commit() | |
gvsig.currentView().addLayer(layer) | |
# Change to ADVANCED LABELING STRATEGY | |
layer.setIsLabeled(True) | |
symManager = SymbologyLocator.getSymbologyManager() | |
glf = GeneralLabelingFactory() | |
gls = glf.createStrategy(layer, None, None, None) | |
placementc = gls.getPlacementConstraints() | |
placementc.setPlacementMode(IPlacementConstraints.ON_TOP_OF_THE_POINT) | |
defaultLabel = symManager.createDefaultLabel() | |
# Puedes agregar las diferentes etiquetas que responde a una expresion | |
# En esta caso dos etiquetas con dos campos | |
defaultLabel.setLabelExpressions(["ID", "ID"]) | |
resp = symManager.createDefaultLabelingMethod() #ILabelingMethod | |
resp.addLabelClass(defaultLabel) | |
gls.setLabelingMethod(resp) | |
layer.setLabelingStrategy(gls) |
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