def testQgsGraduatedSymbolRenderer_1(self): """Test QgsGraduatedSymbolRenderer: Basic get/set functions """ # Create a renderer renderer = QgsGraduatedSymbolRenderer() symbol = createMarkerSymbol() renderer.setSourceSymbol(symbol.clone()) self.assertEqual(symbol.dump(), renderer.sourceSymbol().dump(), "Get/set renderer source symbol") attr = '"value"*"value"' renderer.setClassAttribute(attr) self.assertEqual(attr, renderer.classAttribute(), "Get/set renderer class attribute") for m in ( QgsGraduatedSymbolRenderer.Custom, QgsGraduatedSymbolRenderer.EqualInterval, QgsGraduatedSymbolRenderer.Quantile, QgsGraduatedSymbolRenderer.Jenks, QgsGraduatedSymbolRenderer.Pretty, QgsGraduatedSymbolRenderer.StdDev, ): renderer.setMode(m) self.assertEqual(m, renderer.mode(), "Get/set renderer mode") format = createLabelFormat() renderer.setLabelFormat(format) self.assertEqual(dumpLabelFormat(format), dumpLabelFormat(renderer.labelFormat()), "Get/set renderer label format") ramp = createColorRamp() renderer.setSourceColorRamp(ramp) self.assertEqual(dumpColorRamp(ramp), dumpColorRamp(renderer.sourceColorRamp()), "Get/set renderer color ramp") renderer.setSourceColorRamp(ramp) self.assertEqual(dumpColorRamp(ramp), dumpColorRamp(renderer.sourceColorRamp()), "Get/set renderer color ramp") # test for classificatio with varying size renderer.setGraduatedMethod(QgsGraduatedSymbolRenderer.GraduatedSize) renderer.setSourceColorRamp(None) renderer.addClassLowerUpper(0, 2) renderer.addClassLowerUpper(2, 4) renderer.addClassLowerUpper(4, 6) renderer.setSymbolSizes(2, 13) self.assertEqual(renderer.maxSymbolSize(), 13) self.assertEqual(renderer.minSymbolSize(), 2) refSizes = [2, (13 + 2) * .5, 13] ctx = QgsRenderContext() for idx, symbol in enumerate(renderer.symbols(ctx)): self.assertEqual(symbol.size(), refSizes[idx])
def testQgsGraduatedSymbolRenderer_1(self): """Test QgsGraduatedSymbolRenderer: Basic get/set functions """ # Create a renderer renderer = QgsGraduatedSymbolRenderer() symbol = createMarkerSymbol() renderer.setSourceSymbol(symbol.clone()) self.assertEqual(symbol.dump(), renderer.sourceSymbol().dump(), "Get/set renderer source symbol") attr = '"value"*"value"' renderer.setClassAttribute(attr) self.assertEqual(attr, renderer.classAttribute(), "Get/set renderer class attribute") for m in ( QgsGraduatedSymbolRenderer.Custom, QgsGraduatedSymbolRenderer.EqualInterval, QgsGraduatedSymbolRenderer.Quantile, QgsGraduatedSymbolRenderer.Jenks, QgsGraduatedSymbolRenderer.Pretty, QgsGraduatedSymbolRenderer.StdDev, ): renderer.setMode(m) self.assertEqual(m, renderer.mode(), "Get/set renderer mode") format = createLabelFormat() renderer.setLabelFormat(format) self.assertEqual( dumpLabelFormat(format), dumpLabelFormat(renderer.labelFormat()), "Get/set renderer label format") ramp = createColorRamp() renderer.setSourceColorRamp(ramp) self.assertEqual( dumpColorRamp(ramp), dumpColorRamp(renderer.sourceColorRamp()), "Get/set renderer color ramp") renderer.setSourceColorRamp(ramp) self.assertEqual( dumpColorRamp(ramp), dumpColorRamp(renderer.sourceColorRamp()), "Get/set renderer color ramp") # test for classificatio with varying size renderer.setGraduatedMethod(QgsGraduatedSymbolRenderer.GraduatedSize) renderer.setSourceColorRamp(None) renderer.addClassLowerUpper(0, 2) renderer.addClassLowerUpper(2, 4) renderer.addClassLowerUpper(4, 6) renderer.setSymbolSizes(2, 13) self.assertEqual(renderer.maxSymbolSize(), 13) self.assertEqual(renderer.minSymbolSize(), 2) refSizes = [2, (13 + 2) * .5, 13] ctx = QgsRenderContext() for idx, symbol in enumerate(renderer.symbols(ctx)): self.assertEqual(symbol.size(), refSizes[idx])
def testQgsGraduatedSymbolRenderer_1(self): """Test QgsGraduatedSymbolRenderer: Basic get/set functions """ # Create a renderer renderer = QgsGraduatedSymbolRenderer() symbol = createMarkerSymbol() renderer.setSourceSymbol(symbol.clone()) self.assertEqual(symbol.dump(), renderer.sourceSymbol().dump(), "Get/set renderer source symbol") attr = '"value"*"value"' renderer.setClassAttribute(attr) self.assertEqual(attr, renderer.classAttribute(), "Get/set renderer class attribute") for m in ( QgsGraduatedSymbolRenderer.Custom, QgsGraduatedSymbolRenderer.EqualInterval, QgsGraduatedSymbolRenderer.Quantile, QgsGraduatedSymbolRenderer.Jenks, QgsGraduatedSymbolRenderer.Pretty, QgsGraduatedSymbolRenderer.StdDev, ): renderer.setMode(m) self.assertEqual(m, renderer.mode(), "Get/set renderer mode") format = createLabelFormat() renderer.setLabelFormat(format) self.assertEqual( dumpLabelFormat(format), dumpLabelFormat(renderer.labelFormat()), "Get/set renderer label format") ramp = createColorRamp() renderer.setSourceColorRamp(ramp) self.assertEqual( dumpColorRamp(ramp), dumpColorRamp(renderer.sourceColorRamp()), "Get/set renderer color ramp") renderer.setInvertedColorRamp(True) self.assertTrue(renderer.invertedColorRamp(), "Get/set renderer inverted color ramp") renderer.setInvertedColorRamp(False) self.assertFalse(renderer.invertedColorRamp(), "Get/set renderer inverted color ramp") value = '"value"*2' exp = QgsSymbolLayerUtils.fieldOrExpressionToExpression(value) valuestr = QgsSymbolLayerUtils.fieldOrExpressionFromExpression(exp) renderer.setRotationField(value) self.assertEqual(valuestr, renderer.rotationField(), "Get/set renderer rotation field") value = '"value"*3' exp = QgsSymbolLayerUtils.fieldOrExpressionToExpression(value) valuestr = QgsSymbolLayerUtils.fieldOrExpressionFromExpression(exp) renderer.setSizeScaleField(value) self.assertEqual(valuestr, renderer.sizeScaleField(), "Get/set renderer size scale field") renderer.setSourceColorRamp(ramp) self.assertEqual( dumpColorRamp(ramp), dumpColorRamp(renderer.sourceColorRamp()), "Get/set renderer color ramp") for sm in ( QgsSymbol.ScaleArea, QgsSymbol.ScaleDiameter, ): renderer.setScaleMethod(sm) self.assertEqual(str(sm), str(renderer.scaleMethod()), "Get/set renderer scale method") # test for classificatio with varying size renderer.setGraduatedMethod(QgsGraduatedSymbolRenderer.GraduatedSize) renderer.setSourceColorRamp(None) renderer.addClassLowerUpper(0, 2) renderer.addClassLowerUpper(2, 4) renderer.addClassLowerUpper(4, 6) renderer.setSymbolSizes(2, 13) self.assertEqual(renderer.maxSymbolSize(), 13) self.assertEqual(renderer.minSymbolSize(), 2) refSizes = [2, (13 + 2) * .5, 13] ctx = QgsRenderContext() for idx, symbol in enumerate(renderer.symbols2(ctx)): self.assertEqual(symbol.size(), refSizes[idx])
def testQgsGraduatedSymbolRenderer_1(self): """Test QgsGraduatedSymbolRenderer: Basic get/set functions """ # Create a renderer renderer = QgsGraduatedSymbolRenderer() symbol = createMarkerSymbol() renderer.setSourceSymbol(symbol.clone()) self.assertEqual(symbol.dump(), renderer.sourceSymbol().dump(), "Get/set renderer source symbol") attr = '"value"*"value"' renderer.setClassAttribute(attr) self.assertEqual(attr, renderer.classAttribute(), "Get/set renderer class attribute") for m in ( QgsGraduatedSymbolRenderer.Custom, QgsGraduatedSymbolRenderer.EqualInterval, QgsGraduatedSymbolRenderer.Quantile, QgsGraduatedSymbolRenderer.Jenks, QgsGraduatedSymbolRenderer.Pretty, QgsGraduatedSymbolRenderer.StdDev, ): renderer.setMode(m) self.assertEqual(m, renderer.mode(), "Get/set renderer mode") format = createLabelFormat() renderer.setLabelFormat(format) self.assertEqual(dumpLabelFormat(format), dumpLabelFormat(renderer.labelFormat()), "Get/set renderer label format") ramp = createColorRamp() renderer.setSourceColorRamp(ramp) self.assertEqual(dumpColorRamp(ramp), dumpColorRamp(renderer.sourceColorRamp()), "Get/set renderer color ramp") renderer.setInvertedColorRamp(True) self.assertTrue(renderer.invertedColorRamp(), "Get/set renderer inverted color ramp") renderer.setInvertedColorRamp(False) self.assertFalse(renderer.invertedColorRamp(), "Get/set renderer inverted color ramp") value = '"value"*2' exp = QgsSymbolLayerUtils.fieldOrExpressionToExpression(value) valuestr = QgsSymbolLayerUtils.fieldOrExpressionFromExpression(exp) renderer.setRotationField(value) self.assertEqual(valuestr, renderer.rotationField(), "Get/set renderer rotation field") value = '"value"*3' exp = QgsSymbolLayerUtils.fieldOrExpressionToExpression(value) valuestr = QgsSymbolLayerUtils.fieldOrExpressionFromExpression(exp) renderer.setSizeScaleField(value) self.assertEqual(valuestr, renderer.sizeScaleField(), "Get/set renderer size scale field") renderer.setSourceColorRamp(ramp) self.assertEqual(dumpColorRamp(ramp), dumpColorRamp(renderer.sourceColorRamp()), "Get/set renderer color ramp") for sm in ( QgsSymbol.ScaleArea, QgsSymbol.ScaleDiameter, ): renderer.setScaleMethod(sm) self.assertEqual(str(sm), str(renderer.scaleMethod()), "Get/set renderer scale method") # test for classificatio with varying size renderer.setGraduatedMethod(QgsGraduatedSymbolRenderer.GraduatedSize) renderer.setSourceColorRamp(None) renderer.addClassLowerUpper(0, 2) renderer.addClassLowerUpper(2, 4) renderer.addClassLowerUpper(4, 6) renderer.setSymbolSizes(2, 13) self.assertEqual(renderer.maxSymbolSize(), 13) self.assertEqual(renderer.minSymbolSize(), 2) refSizes = [2, (13 + 2) * .5, 13] ctx = QgsRenderContext() for idx, symbol in enumerate(renderer.symbols2(ctx)): self.assertEqual(symbol.size(), refSizes[idx])
class LayerBase(QgsVectorLayer): """QGIS layer base class (read-only memory based). :param fileName: path to input file :param storageFormat: storage format for layer (Memory or SQLite) """ def __init__(self, fileName, storageFormat): self._fileName = fileName self._layerName = os.path.splitext(os.path.basename(self._fileName))[0] self.storageFormat = storageFormat # create point layer (WGS-84, EPSG:4326) super(LayerBase, self).__init__('Point?crs=epsg:4326', self._layerName, "memory") self._aliases = [] # list of attribute aliases self._provider = self.dataProvider() # import errors self._errs = {} # layer is empty, no data loaded self._loaded = False self.metadata = None # layer type not defined self.layerType = None # style self._style = Style() self._renderer = None def load(self, reader): """Load input data by specified reader. :param reader: reader class used for reading input data """ if self._loaded: return # data already loaded # create progress bar widget progressMessageBar = iface.messageBar().createMessage( self.tr("Loading data...")) progress = QtWidgets.QProgressBar() progress.setMaximum(100) progressMessageBar.layout().addWidget(progress) iface.messageBar().pushWidget(progressMessageBar, Qgis.Info) # load items as new point features (inform user about progress) i = 0 count = reader.count() start = time.clock() prev = None # previous feature self.startEditing() for item in reader: i += 1 if i == 1 and not self._aliases: # set attributes from data item if needed self._aliases = self._setAttrbsDefs( limit=item.keys(), defs=reader.attributeDefs()) feat = self._item2feat(item) if not feat: # error appeared continue feat.setId(i) self.addFeature(feat) if i % 100 == 0: percent = i / float(count) * 100 progress.setValue(percent) # add features (attributes recalculated if requested) self.commitChanges() if self.storageFormat != "memory": self._writeToOgrDataSource() self.reload() # finish import endtime = time.clock() - start progress.setValue(100) iface.messageBar().clearWidgets() if self._errs: # report errors if any iface.messageBar().pushMessage( self.tr("Info"), self. tr("{} invalid measurement(s) skipped (see message log for details)" ).format(sum(self._errs.values())), level=Qgis.Info, duration=5) for attr in list(self._errs.keys()): QgsMessageLog.logMessage( "{}: {} measurement(s) skipped (invalid {})".format( self._fileName, self._errs[attr], attr), tag=PLUGIN_NAME) # inform user about successful import iface.messageBar().pushMessage( self.tr("Data loaded"), self.tr("{} features loaded (in {:.2f} sec).").format( self.featureCount(), endtime), level=Qgis.Success, duration=3) # data loaded (avoid multiple imports) self._loaded = True # switch to read-only mode self.setReadOnly(True) def _writeToOgrDataSource(self): fileExt = self.storageFormat.lower() filePath = os.path.splitext(self._fileName)[0] + '.{}'.format(fileExt) writer, msg = QgsVectorFileWriter.writeAsVectorFormat( self, filePath, self._provider.encoding(), self._provider.crs(), driverName=self.storageFormat) if writer != QgsVectorFileWriter.NoError: raise LoadError( self.tr("Unable to create SQLite datasource: {}").format(msg)) # set datasource to new OGR datasource self.setDataSource(filePath, self._layerName, 'ogr') self._provider = self.dataProvider() # create metadata layer if self.metadata and 'table' in self.metadata: ds = ogr.Open(filePath, True) layer_name = self.metadata['table'] layer = ds.GetLayerByName(layer_name) if layer is None: layer = ds.CreateLayer(layer_name, None, ogr.wkbNone) layer_defn = layer.GetLayerDefn() if 'columns' in self.metadata: for key in self.metadata['columns']: field = ogr.FieldDefn(key, ogr.OFTString) layer.CreateField(field) feat = ogr.Feature(layer_defn) for key, value in list(self.metadata['columns'].items()): feat.SetField(key, value) layer.CreateFeature(feat) feat = None def _addError(self, etype): """Add error message. :param etype: error type (HDOP, SAT, ...) """ if etype not in self._errs: self._errs[etype] = 0 self._errs[etype] += 1 def _item2feat(self, item): """Create QgsFeature from data item. """ raise NotImplementedError() def _setAttrbsDefs(self, limit=[], defs=None): """Set attributes definition from CSV file if available. :param limit: limit to list of attributes :returns: list of aliases """ def addAttribute(row, attrbs, aliases): attrbs.append( QgsField(row['attribute'], eval("QVariant.{}".format(row['qtype'])))) if 'alias' in row and row['alias']: aliases.append(row['alias'].replace('_', ' ')) def processAttributes(csv_attrbs, limit): attrbs = [] aliases = [] if limit: # limit attributes based on input file (first feature) - ERS/PEI format specific for name in limit: # first try full name match found = False for row in csv_attrbs: if row['attribute'] == name: addAttribute(row, attrbs, aliases) found = True break if found: continue for row in csv_attrbs: # full name match is not required see # https://gitlab.com/opengeolabs/qgis-radiation-toolbox-plugin/issues/41#note_136183930 if row['attribute'] == name[:len( row['attribute'] )] or name == row['attribute'][:len(name)]: row_modified = copy.copy(row) row_modified[ 'attribute'] = name # force (full) attribute name from input file if row_modified['alias']: row_modified['alias'] = '{} ({})'.format( name, row_modified['alias']) addAttribute(row_modified, attrbs, aliases) break else: # add all attributes for row in csv_attrbs: addAttribute(row, attrbs, aliases) return attrbs, aliases if not defs: # predefined attributes (CSV file) # Safecast, ERS csv_file = self._attributesCSVFile() if not os.path.exists(csv_file): return [] with open(csv_file) as fd: csv_attrbs = list(csv.DictReader(fd, delimiter=';')) attrbs, aliases = processAttributes(csv_attrbs, limit) else: # data-driven attributes # PEI attrbs, aliases = processAttributes(defs, limit) if limit and len(attrbs) != len(limit): raise LoadError("Number of attributes differs {} vs {}".format( len(attrbs), len(limit))) if aliases and self.storageFormat != "memory": aliases.insert(0, "FID") # set attributes self._provider.addAttributes(attrbs) self.updateFields() return aliases def setAliases(self): """Set aliases """ for i in range(0, len(self._aliases)): self.setFieldAlias(i, self._aliases[i]) def setStyle(self, idx): """Set layer style. :param int idx: style (combobox) index """ try: style = self._style[idx] except (IndexError, KeyError): return None if 'file' in style: # QML style stylePath = style['file'] if not os.path.isfile(stylePath): raise StyleError( self.tr("Style '{}' not found").format(stylePath)) self.loadNamedStyle(stylePath) elif 'colorramp' in style: if not self._renderer: # symbol (store transparent) symbol = QgsSymbol.defaultSymbol(self.geometryType()) symbol.symbolLayer(0).setStrokeColor(QColor("transparent")) # renderer self._renderer = QgsGraduatedSymbolRenderer() self._renderer.setSourceSymbol(symbol) print(self._renderer.sourceSymbol()) self._renderer.setClassAttribute(style['attribute']) self._renderer.setMode( QgsGraduatedSymbolRenderer.EqualInterval) self._renderer.updateClasses( self, QgsGraduatedSymbolRenderer.EqualInterval, style['classes']) self.setRenderer(self._renderer) self._renderer.updateColorRamp(style['colorramp']) else: raise StyleError(self.tr("Undefined style")) def style(self): """Get style. :return: style class """ return self._style def _attributesCSVFile(self): return os.path.join( os.path.dirname(__file__), os.path.splitext(inspect.getfile(self.__class__))[0] + '.csv')