def update_syms(self, catalogue):
self.syms = {}
for flag in set(catalogue.data['Cluster_Flag'].tolist()):
for index in set(catalogue.data['Cluster_Index'].tolist()):
# main shock
point = QgsMarkerSymbolV2.createSimple(
{'color': 'blue', 'name': 'square'})
if index: # belongs to a cluster
color = self.catalogue_model.cluster_color(index)
# non poissonian
if flag:
point = QgsMarkerSymbolV2.createSimple(
{'color': 'blue', 'name': 'triangle'})
color.setAlpha(125 + 125 * abs(flag))
point.setSize(3)
point.setColor(color)
else:
point = QgsSymbolV2.defaultSymbol(QGis.Point)
point.setColor(QtGui.QColor("0,0,0,125"))
point.setSize(1.5)
self.syms[self.Cluster(index, flag)] = point
def legend_test(self):
self.mAtlasMap.setAtlasDriven(True)
self.mAtlasMap.setAtlasScalingMode(QgsComposerMap.Auto)
self.mAtlasMap.setAtlasMargin(0.10)
# add a point layer
ptLayer = QgsVectorLayer("Point?crs=epsg:4326&field=attr:int(1)&field=label:string(20)", "points", "memory")
pr = ptLayer.dataProvider()
f1 = QgsFeature(1)
f1.initAttributes(2)
f1.setAttribute(0, 1)
f1.setAttribute(1, "Test label 1")
f1.setGeometry(QgsGeometry.fromPoint(QgsPoint(-0.638, 48.954)))
f2 = QgsFeature(2)
f2.initAttributes(2)
f2.setAttribute(0, 2)
f2.setAttribute(1, "Test label 2")
f2.setGeometry(QgsGeometry.fromPoint(QgsPoint(-1.682, 48.550)))
pr.addFeatures([f1, f2])
# categorized symbology
r = QgsCategorizedSymbolRendererV2("attr", [QgsRendererCategoryV2(1, QgsMarkerSymbolV2.createSimple({"color": "255,0,0"}), "red"),
QgsRendererCategoryV2(2, QgsMarkerSymbolV2.createSimple({"color": "0,0,255"}), "blue")])
ptLayer.setRendererV2(r)
QgsMapLayerRegistry.instance().addMapLayer(ptLayer)
# add the point layer to the map settings
layers = self.mapSettings.layers()
layers = [ptLayer.id()] + layers
self.mapSettings.setLayers(layers)
# add a legend
legend = QgsComposerLegend(self.mComposition)
legend.moveBy(200, 100)
# sets the legend filter parameter
legend.setComposerMap(self.mAtlasMap)
legend.setLegendFilterOutAtlas(True)
self.mComposition.addComposerLegend(legend)
self.mAtlas.beginRender()
self.mAtlas.prepareForFeature(0)
self.mLabel1.adjustSizeToText()
checker = QgsCompositionChecker('atlas_legend', self.mComposition)
myTestResult, myMessage = checker.testComposition()
assert myTestResult
self.mAtlas.endRender()
# restore state
self.mapSettings.setLayers([layers[1]])
self.mComposition.removeComposerItem(legend)
QgsMapLayerRegistry.instance().removeMapLayer(ptLayer.id())
def getmap(self):
if self.canvas:
settings = self.canvas.mapSettings()
layers = settings.layers()
if GPS.isConnected:
try:
gpslayer = QgsMapLayerRegistry.instance().mapLayersByName(
"__gps_layer")[0]
except IndexError:
gpslayer = QgsVectorLayer("Point", "__gps_layer", "memory")
symbol = QgsMarkerSymbolV2.createSimple({
'name': 'circle',
'color': 'blue',
"size": '5'
})
gpslayer.rendererV2().setSymbol(symbol)
QgsMapLayerRegistry.instance().addMapLayer(gpslayer, False)
layers.append(gpslayer.id())
settings.setLayers(layers)
map_pos = QgsPoint(GPS.gpsinfo("longitude"),
GPS.gpsinfo("latitude"))
# map_pos = QgsPoint(115.72589,-32.29597)
geom = QgsGeometry.fromPoint(map_pos)
feature = QgsFeature()
feature.setGeometry(geom)
gpslayer.startEditing()
gpslayer.addFeature(feature)
# gpslayer.commitChanges()
self.renderjob = QgsMapRendererParallelJob(settings)
self.renderjob.finished.connect(self.rendermap)
self.renderjob.start()
def setUp(self):
self.iface = get_iface()
polys_shp = os.path.join(TEST_DATA_DIR, 'polys.shp')
points_shp = os.path.join(TEST_DATA_DIR, 'points.shp')
lines_shp = os.path.join(TEST_DATA_DIR, 'lines.shp')
self.polys_layer = QgsVectorLayer(polys_shp, 'Polygons', 'ogr')
self.points_layer = QgsVectorLayer(points_shp, 'Points', 'ogr')
self.lines_layer = QgsVectorLayer(lines_shp, 'Lines', 'ogr')
QgsMapLayerRegistry.instance().addMapLayer(self.polys_layer)
QgsMapLayerRegistry.instance().addMapLayer(self.lines_layer)
QgsMapLayerRegistry.instance().addMapLayer(self.points_layer)
# Create style
sym1 = QgsFillSymbolV2.createSimple({'color': '#fdbf6f'})
sym2 = QgsLineSymbolV2.createSimple({'color': '#fdbf6f'})
sym3 = QgsMarkerSymbolV2.createSimple({'color': '#fdbf6f'})
self.polys_layer.setRendererV2(QgsSingleSymbolRendererV2(sym1))
self.lines_layer.setRendererV2(QgsSingleSymbolRendererV2(sym2))
self.points_layer.setRendererV2(QgsSingleSymbolRendererV2(sym3))
self.mapsettings = self.iface.mapCanvas().mapSettings()
self.mapsettings.setOutputSize(QSize(400, 400))
self.mapsettings.setOutputDpi(96)
self.mapsettings.setExtent(QgsRectangle(-133, 22, -70, 52))
def setUp(self):
self.iface = get_iface()
polys_shp = os.path.join(TEST_DATA_DIR, 'polys.shp')
points_shp = os.path.join(TEST_DATA_DIR, 'points.shp')
lines_shp = os.path.join(TEST_DATA_DIR, 'lines.shp')
self.polys_layer = QgsVectorLayer(polys_shp, 'Polygons', 'ogr')
self.points_layer = QgsVectorLayer(points_shp, 'Points', 'ogr')
self.lines_layer = QgsVectorLayer(lines_shp, 'Lines', 'ogr')
QgsMapLayerRegistry.instance().addMapLayer(self.polys_layer)
QgsMapLayerRegistry.instance().addMapLayer(self.lines_layer)
QgsMapLayerRegistry.instance().addMapLayer(self.points_layer)
# Create style
sym1 = QgsFillSymbolV2.createSimple({'color': '#fdbf6f'})
sym2 = QgsLineSymbolV2.createSimple({'color': '#fdbf6f'})
sym3 = QgsMarkerSymbolV2.createSimple({'color': '#fdbf6f'})
self.polys_layer.setRendererV2(QgsSingleSymbolRendererV2(sym1))
self.lines_layer.setRendererV2(QgsSingleSymbolRendererV2(sym2))
self.points_layer.setRendererV2(QgsSingleSymbolRendererV2(sym3))
self.mapsettings = self.iface.mapCanvas().mapSettings()
self.mapsettings.setOutputSize(QSize(400, 400))
self.mapsettings.setOutputDpi(96)
self.mapsettings.setExtent(QgsRectangle(-133, 22, -70, 52))
def getmap(self):
if self.canvas:
settings = self.canvas.mapSettings()
layers = settings.layers()
if GPS.isConnected:
try:
gpslayer = QgsMapLayerRegistry.instance().mapLayersByName("__gps_layer")[0]
except IndexError:
gpslayer = QgsVectorLayer("Point", "__gps_layer", "memory")
symbol = QgsMarkerSymbolV2.createSimple({'name': 'circle', 'color': 'blue', "size": '5'})
gpslayer.rendererV2().setSymbol(symbol)
QgsMapLayerRegistry.instance().addMapLayer(gpslayer, False)
layers.append(gpslayer.id())
settings.setLayers(layers)
map_pos = QgsPoint(GPS.gpsinfo("longitude"), GPS.gpsinfo("latitude"))
# map_pos = QgsPoint(115.72589,-32.29597)
geom = QgsGeometry.fromPoint(map_pos)
feature = QgsFeature()
feature.setGeometry(geom)
gpslayer.startEditing()
gpslayer.addFeature(feature)
# gpslayer.commitChanges()
self.renderjob = QgsMapRendererParallelJob(settings)
self.renderjob.finished.connect(self.rendermap)
self.renderjob.start()
def createMarkerSymbol():
symbol = QgsMarkerSymbolV2.createSimple({
"color": "100,150,50",
"name": "square",
"size": "3.0"
})
return symbol
def buildRenderer(self, xAttr, yAttr):
color = QColor(randint(0, 255), randint(0, 255), randint(0, 255))
symbol = QgsMarkerSymbolV2.createSimple({})
symbol.deleteSymbolLayer(0)
prop = QgsDataDefined()
prop.setField("size")
prop.setActive(True)
symbol_layer = QgsSimpleMarkerSymbolLayerV2()
symbol_layer.setColor(color)
symbol_layer.setOutputUnit(QgsSymbolV2.MapUnit)
symbol_layer.setDataDefinedProperty("size", prop)
symbol.appendSymbolLayer(symbol_layer)
symbol_layer = QgsVectorFieldSymbolLayer()
symbol_layer.setColor(color)
symbol_layer.VectorFieldType(QgsVectorFieldSymbolLayer.Cartesian)
symbol_layer.AngleUnits(QgsVectorFieldSymbolLayer.Degrees)
symbol_layer.setScale(2.0)
symbol_layer.setXAttribute(xAttr)
symbol_layer.setYAttribute(yAttr)
subSymbol = self.subRenderer(color)
symbol_layer.setSubSymbol(subSymbol)
symbol.appendSymbolLayer(symbol_layer)
renderer = QgsSingleSymbolRendererV2(symbol)
return renderer
def make_svg_link_sym_renderer(self, icon_name, svg_size=7, line_width=0.2):
symbol = QgsLineSymbolV2().createSimple({})
symbol.deleteSymbolLayer(0)
# Line
line_sym_lay = QgsSimpleLineSymbolLayerV2()
line_sym_lay.setWidth(line_width)
symbol.appendSymbolLayer(line_sym_lay)
# Symbol
self.marker_sym = QgsMarkerSymbolV2.createSimple({})
self.marker_sym.deleteSymbolLayer(0)
# marker_sym_lay = QgsSimpleMarkerSymbolLayerV2()
current_dir = os.path.dirname(__file__)
svg_props = dict()
svg_props['name'] = os.path.join(current_dir, icon_name)
svg_props['size'] = str(svg_size)
marker_sym_lay = QgsSvgMarkerSymbolLayerV2().create(svg_props)
self.marker_sym.appendSymbolLayer(marker_sym_lay)
marker_line_sym_lay = QgsMarkerLineSymbolLayerV2()
marker_line_sym_lay.setSubSymbol(self.marker_sym) # Causes crash !!!
marker_line_sym_lay.setPlacement(QgsMarkerLineSymbolLayerV2.CentralPoint)
symbol.appendSymbolLayer(marker_line_sym_lay)
renderer = QgsSingleSymbolRendererV2(symbol)
return renderer
def createMarkerSymbol():
symbol = QgsMarkerSymbolV2.createSimple({
"color": "100,150,50",
"name": "square",
"size": "3.0"
})
return symbol
def __init__(self):
QgsFeatureRendererV2.__init__(self, "CatalogueCompletenessRenderer")
complete = QgsSymbolV2.defaultSymbol(QGis.Point)
uncomplete = QgsMarkerSymbolV2.createSimple(
{'color': 'blue', 'name': 'triangle'})
uncomplete.setSize(3)
complete.setSize(1.5)
complete.setColor(QtGui.QColor(255, 0, 0, 125))
self.syms = [complete, uncomplete]
def create_qlayer(self):
layer= QgsVectorLayer("Point"+self.crs, self.prefix+"-nodes", "memory")
# nice clean black dot
symbol = QgsMarkerSymbolV2.createSimple({'outline_style':'no',
'name': 'circle',
'size_unit':'MM',
'size':'1',
'color': 'black'})
layer.rendererV2().setSymbol(symbol)
return layer
def setUp(self):
#Create some simple symbols
self.fill_symbol = QgsFillSymbolV2.createSimple({'color': '#ffffff'})
self.line_symbol = QgsLineSymbolV2.createSimple({
'color': '#ffffff',
'line_width': '3'
})
self.marker_symbol = QgsMarkerSymbolV2.createSimple({
'color': '#ffffff',
'size': '3'
})
self.report = "<h1>Python QgsSymbolV2 Tests</h1>\n"
def addLayer(self):
uri = QgsDataSourceURI()
# set host name, port, database name, username and password
#uri.setConnection("localhost", "5432", "jguelat", "jguelat", "")
uri.setConnection("local_jguelat", "", "", "")
# set database schema, table name, geometry column and optionally subset (WHERE clause)
uri.setDataSource("public", self.tableCombo.currentText(), "geom", "species_id = " + self.speciesCombo.currentText())
#vlayer = self.iface.addVectorLayer(uri.uri(), "Species " + self.speciesCombo.currentText(), "postgres")
vlayer = QgsVectorLayer(uri.uri(), "Species " + self.speciesCombo.currentText(), "postgres")
props = vlayer.rendererV2().symbol().symbolLayer(0).properties()
props['size'] = '3'
props['color'] = 'blue'
vlayer.rendererV2().setSymbol(QgsMarkerSymbolV2.createSimple(props))
QgsMapLayerRegistry.instance().addMapLayer(vlayer)
QgsMessageLog.logMessage("Tout est OK", 'BirdChooser', QgsMessageLog.INFO)
def createLayerControle(proj):
layerStopLine = QgsVectorLayer("Point?crs=" + proj,
CONST_NOM_LAYER_PT_CONTROLE, "memory")
# Style
# Symbologie des stations
symbolPoint = QgsMarkerSymbolV2.createSimple({
'name': 'square',
'color_border': '255,216,0'
})
symbolPoint.setColor(QColor.fromRgb(255, 216, 0)) #F 216,7,96
symbolPoint.setSize(2)
layerStopLine.rendererV2().setSymbol(symbolPoint)
return layerStopLine
def test_point_ordered_symbol_bound_offset(self):
# Test ordered placements for point using symbol bounds offset
self.layer = TestQgsPalLabeling.loadFeatureLayer('point_ordered_placement')
# Make a big symbol
symbol = QgsMarkerSymbolV2.createSimple({u'color': u'31,120,180,255',
u'outline_color': u'0,0,0,0',
u'outline_style': u'solid',
u'size': u'10',
u'name': u'rectangle',
u'size_unit': u'MM'})
renderer = QgsSingleSymbolRendererV2(symbol)
self.layer.setRendererV2(renderer)
self._TestMapSettings = self.cloneMapSettings(self._MapSettings)
self.lyr.placement = QgsPalLayerSettings.OrderedPositionsAroundPoint
self.lyr.dist = 2
self.lyr.offsetType = QgsPalLayerSettings.FromSymbolBounds
self.checkTest()
self.removeMapLayer(self.layer)
self.layer = None
def testInitialSizeSymbolMapUnits(self):
"""Test initial size of legend with a symbol size in map units"""
point_path = os.path.join(TEST_DATA_DIR, 'points.shp')
point_layer = QgsVectorLayer(point_path, 'points', 'ogr')
QgsMapLayerRegistry.instance().addMapLayers([point_layer])
marker_symbol = QgsMarkerSymbolV2.createSimple({
'color': '#ff0000',
'outline_style': 'no',
'size': '5',
'size_unit': 'MapUnit'
})
point_layer.setRendererV2(QgsSingleSymbolRendererV2(marker_symbol))
s = QgsMapSettings()
s.setLayers([point_layer.id()])
s.setCrsTransformEnabled(False)
composition = QgsComposition(s)
composition.setPaperSize(297, 210)
composer_map = QgsComposerMap(composition, 20, 20, 80, 80)
composer_map.setFrameEnabled(True)
composition.addComposerMap(composer_map)
composer_map.setNewExtent(point_layer.extent())
legend = QgsComposerLegend(composition)
legend.setSceneRect(QRectF(120, 20, 80, 80))
legend.setFrameEnabled(True)
legend.setFrameOutlineWidth(2)
legend.setBackgroundColor(QColor(200, 200, 200))
legend.setTitle('')
composition.addComposerLegend(legend)
legend.setComposerMap(composer_map)
checker = QgsCompositionChecker('composer_legend_mapunits',
composition)
checker.setControlPathPrefix("composer_legend")
result, message = checker.testComposition()
self.assertTrue(result, message)
QgsMapLayerRegistry.instance().removeMapLayers([point_layer.id()])
def test_point_ordered_symbol_bound_offset(self):
# Test ordered placements for point using symbol bounds offset
self.layer = TestQgsPalLabeling.loadFeatureLayer(
'point_ordered_placement')
# Make a big symbol
symbol = QgsMarkerSymbolV2.createSimple({
u'color': u'31,120,180,255',
u'outline_color': u'0,0,0,0',
u'outline_style': u'solid',
u'size': u'10',
u'name': u'rectangle',
u'size_unit': u'MM'
})
renderer = QgsSingleSymbolRendererV2(symbol)
self.layer.setRendererV2(renderer)
self._TestMapSettings = self.cloneMapSettings(self._MapSettings)
self.lyr.placement = QgsPalLayerSettings.OrderedPositionsAroundPoint
self.lyr.dist = 2
self.lyr.offsetType = QgsPalLayerSettings.FromSymbolBounds
self.checkTest()
self.removeMapLayer(self.layer)
self.layer = None
def testInitialSizeSymbolMapUnits(self):
"""Test initial size of legend with a symbol size in map units"""
point_path = os.path.join(TEST_DATA_DIR, 'points.shp')
point_layer = QgsVectorLayer(point_path, 'points', 'ogr')
QgsMapLayerRegistry.instance().addMapLayers([point_layer])
marker_symbol = QgsMarkerSymbolV2.createSimple({'color': '#ff0000', 'outline_style': 'no', 'size': '5', 'size_unit': 'MapUnit'})
point_layer.setRendererV2(QgsSingleSymbolRendererV2(marker_symbol))
s = QgsMapSettings()
s.setLayers([point_layer.id()])
s.setCrsTransformEnabled(False)
composition = QgsComposition(s)
composition.setPaperSize(297, 210)
composer_map = QgsComposerMap(composition, 20, 20, 80, 80)
composer_map.setFrameEnabled(True)
composition.addComposerMap(composer_map)
composer_map.setNewExtent(point_layer.extent())
legend = QgsComposerLegend(composition)
legend.setSceneRect(QRectF(120, 20, 80, 80))
legend.setFrameEnabled(True)
legend.setFrameOutlineWidth(2)
legend.setBackgroundColor(QColor(200, 200, 200))
legend.setTitle('')
composition.addComposerLegend(legend)
legend.setComposerMap(composer_map)
checker = QgsCompositionChecker(
'composer_legend_mapunits', composition)
checker.setControlPathPrefix("composer_legend")
result, message = checker.testComposition()
self.assertTrue(result, message)
QgsMapLayerRegistry.instance().removeMapLayers([point_layer.id()])
def create_virtual_layer(self, virtual_layer_name):
sql = (
"SELECT value FROM " + self.controller.schema_name +
".config_param_user"
" WHERE cur_user = current_user AND parameter = 'virtual_layer_point'"
)
row = self.controller.get_row(sql)
if not row:
sql = ("INSERT INTO " + self.schema_name +
".config_param_user (parameter, value, cur_user) "
" VALUES ('virtual_layer_point', '" + virtual_layer_name +
"', current_user)")
self.controller.execute_sql(sql)
uri = "Point?crs=epsg:" + str(self.srid)
virtual_layer = QgsVectorLayer(uri, virtual_layer_name, "memory")
props = {'color': 'red', 'color_border': 'red', 'size': '1.5'}
s = QgsMarkerSymbolV2.createSimple(props)
virtual_layer.setRendererV2(QgsSingleSymbolRendererV2(s))
virtual_layer.updateExtents()
QgsProject.instance().setSnapSettingsForLayer(virtual_layer.id(), True,
0, 0, 1.0, False)
QgsMapLayerRegistry.instance().addMapLayer(virtual_layer)
self.iface.mapCanvas().refresh()
def setUp(self):
# Create some simple symbols
self.fill_symbol = QgsFillSymbolV2.createSimple({"color": "#ffffff"})
self.line_symbol = QgsLineSymbolV2.createSimple({"color": "#ffffff", "line_width": "3"})
self.marker_symbol = QgsMarkerSymbolV2.createSimple({"color": "#ffffff", "size": "3"})
self.report = "<h1>Python QgsSymbolV2 Tests</h1>\n"
def legend_test(self):
self.mAtlasMap.setAtlasDriven(True)
self.mAtlasMap.setAtlasScalingMode(QgsComposerMap.Auto)
self.mAtlasMap.setAtlasMargin(0.10)
# add a point layer
ptLayer = QgsVectorLayer(
"Point?crs=epsg:4326&field=attr:int(1)&field=label:string(20)",
"points", "memory")
pr = ptLayer.dataProvider()
f1 = QgsFeature(1)
f1.initAttributes(2)
f1.setAttribute(0, 1)
f1.setAttribute(1, "Test label 1")
f1.setGeometry(QgsGeometry.fromPoint(QgsPoint(-0.638, 48.954)))
f2 = QgsFeature(2)
f2.initAttributes(2)
f2.setAttribute(0, 2)
f2.setAttribute(1, "Test label 2")
f2.setGeometry(QgsGeometry.fromPoint(QgsPoint(-1.682, 48.550)))
pr.addFeatures([f1, f2])
# categorized symbology
r = QgsCategorizedSymbolRendererV2("attr", [
QgsRendererCategoryV2(
1, QgsMarkerSymbolV2.createSimple({"color": "255,0,0"}),
"red"),
QgsRendererCategoryV2(
2, QgsMarkerSymbolV2.createSimple({"color": "0,0,255"}),
"blue")
])
ptLayer.setRendererV2(r)
QgsMapLayerRegistry.instance().addMapLayer(ptLayer)
# add the point layer to the map settings
layers = self.mapSettings.layers()
layers = [ptLayer.id()] + layers
self.mapSettings.setLayers(layers)
# add a legend
legend = QgsComposerLegend(self.mComposition)
legend.moveBy(200, 100)
# sets the legend filter parameter
legend.setComposerMap(self.mAtlasMap)
legend.setLegendFilterOutAtlas(True)
self.mComposition.addComposerLegend(legend)
self.mAtlas.beginRender()
self.mAtlas.prepareForFeature(0)
self.mLabel1.adjustSizeToText()
checker = QgsCompositionChecker('atlas_legend', self.mComposition)
myTestResult, myMessage = checker.testComposition()
assert myTestResult
self.mAtlas.endRender()
# restore state
self.mapSettings.setLayers([layers[1]])
self.mComposition.removeComposerItem(legend)
QgsMapLayerRegistry.instance().removeMapLayer(ptLayer.id())
def make_flow_sym_renderer(self, layer, field_name, ranges_colors=None):
feats = layer.getFeatures()
min_val = sys.float_info.max
max_val = -min_val
# Find values range
for feat in feats:
attr = feat.attribute(field_name)
val = float(attr)
if val < min_val:
min_val = val
if val > max_val:
max_val = val
# Define colors
if ranges_colors is None:
ranges_colors = []
colors = [
QColor(0, 255, 0),
QColor(128, 255, 0),
QColor(255, 255, 0),
QColor(255, 128, 0),
QColor(255, 0, 0)]
intv_nr = len(colors)
intv = (max_val - min_val) / intv_nr
for c in range(intv_nr):
vrange = [min_val + intv * c, min_val + intv * (c + 1)]
if c == len(colors) - 1:
vrange[1] = max_val
ranges_colors.append([vrange, colors[c]])
range_list = []
for range_col in ranges_colors:
r_min = range_col[0][0]
r_max = range_col[0][1]
title = str(r_min) + ' - ' + str(r_max)
range_list.append(symbology_from_range(layer, r_min, r_max, range_col[1], title))
renderer = QgsGraduatedSymbolRendererV2(field_name, range_list)
# Line
symbol = QgsLineSymbolV2().createSimple({})
symbol.deleteSymbolLayer(0)
line_sym_lay = QgsSimpleLineSymbolLayerV2()
line_sym_lay.setWidth(0.2)
symbol.appendSymbolLayer(line_sym_lay)
# Define arrows for flow and velocities
if u'Link flow' in layer.name() in layer.name():
self.marker_sym = QgsMarkerSymbolV2.createSimple({'name': 'triangle', 'color': 'black'})
data_def_angle = QgsDataDefined()
data_def_angle_exp =\
'case ' \
'when "' + field_name + '" >= 0 ' \
'then degrees(azimuth( start_point( $geometry), end_point($geometry))) ' \
'else ' \
'case ' \
'when degrees(azimuth( start_point( $geometry), end_point($geometry))) < 180 ' \
'then degrees(azimuth( start_point( $geometry), end_point($geometry))) + 180 ' \
'else ' \
'degrees(azimuth( start_point( $geometry), end_point($geometry))) - 180 ' \
'end ' \
'end'
data_def_angle.setExpressionString(data_def_angle_exp)
data_def_angle.setActive(True)
self.marker_sym.setDataDefinedAngle(data_def_angle)
# Size: 0 if attribute = 0
data_def_size = QgsDataDefined()
data_def_size_exp =\
'case ' \
'when "' + field_name + '" = 0 ' \
'then 0 ' \
'else ' \
'2 ' \
'end'
data_def_size.setExpressionString(data_def_size_exp)
data_def_size.setActive(True)
self.marker_sym.setDataDefinedSize(data_def_size)
marker_sym_lay = QgsMarkerLineSymbolLayerV2()
marker_sym_lay.setColor(QColor(0, 0, 0))
marker_sym_lay.setFillColor(QColor(0, 0, 0))
marker_sym_lay.setPlacement(QgsMarkerLineSymbolLayerV2.CentralPoint)
marker_sym_lay.setRotateMarker(False)
marker_sym_lay.setSubSymbol(self.marker_sym)
self.marker_sym.appendSymbolLayer(marker_sym_lay)
symbol.appendSymbolLayer(marker_sym_lay)
# renderer.setSourceSymbol(symbol)
renderer.updateSymbols(symbol)
return renderer
# coding: utf-8
from qgis.core import QgsMarkerSymbolV2
from qgis.gui import QgsSizeScaleWidget
from qgis.utils import iface
layer = iface.activeLayer()
canvas = iface.mapCanvas()
marker_symbol_v2 = QgsMarkerSymbolV2.createSimple({"color": "blue", "name": "triangle"})
size_scale_widget = QgsSizeScaleWidget(layer, marker_symbol_v2)
size_scale_widget.setMapCanvas(canvas)
size_scale_widget.show()
def setUp(self):
#Create some simple symbols
self.fill_symbol = QgsFillSymbolV2.createSimple({'color': '#ffffff'})
self.line_symbol = QgsLineSymbolV2.createSimple({'color': '#ffffff', 'line_width': '3'})
self.marker_symbol = QgsMarkerSymbolV2.createSimple({'color': '#ffffff', 'size': '3'})
self.report = "<h1>Python QgsSymbolV2 Tests</h1>\n"
def apply(self, layer):
symbol = QgsMarkerSymbolV2.createSimple({'name': self.shape,
'color': self.color})
self.renderer = QgsSingleSymbolRendererV2(symbol)
super(SimpleSymbology, self).apply(layer)
# coding: utf-8
from qgis.core import QgsMarkerSymbolV2
from qgis.gui import QgsSizeScaleWidget
from qgis.utils import iface
layer = iface.activeLayer()
canvas = iface.mapCanvas()
marker_symbol_v2 = QgsMarkerSymbolV2.createSimple({
'color': 'blue',
'name': 'triangle'
})
size_scale_widget = QgsSizeScaleWidget(layer, marker_symbol_v2)
size_scale_widget.setMapCanvas(canvas)
size_scale_widget.show()