def testRefineWithRanges(self):
#Test refining rule with ranges (refs #10815)
#First, try with a field based category (id)
ranges = []
ranges.append(QgsRendererRangeV2(0, 1, QgsMarkerSymbolV2(), "0-1"))
ranges.append(QgsRendererRangeV2(1, 2, QgsMarkerSymbolV2(), "1-2"))
g = QgsGraduatedSymbolRendererV2("id", ranges)
QgsRuleBasedRendererV2.refineRuleRanges(self.r2, g)
assert self.r2.children()[0].filterExpression() == '"id" >= 0.0000 AND "id" <= 1.0000'
assert self.r2.children()[1].filterExpression() == '"id" > 1.0000 AND "id" <= 2.0000'
#Next try with an expression based range
ranges = []
ranges.append(QgsRendererRangeV2(0, 1, QgsMarkerSymbolV2(), "0-1"))
ranges.append(QgsRendererRangeV2(1, 2, QgsMarkerSymbolV2(), "1-2"))
g = QgsGraduatedSymbolRendererV2("id / 2", ranges)
QgsRuleBasedRendererV2.refineRuleRanges(self.r1, g)
assert self.r1.children()[0].filterExpression() == '(id / 2) >= 0.0000 AND (id / 2) <= 1.0000'
assert self.r1.children()[1].filterExpression() == '(id / 2) > 1.0000 AND (id / 2) <= 2.0000'
#Last try with an expression which is just a quoted field name
ranges = []
ranges.append(QgsRendererRangeV2(0, 1, QgsMarkerSymbolV2(), "0-1"))
ranges.append(QgsRendererRangeV2(1, 2, QgsMarkerSymbolV2(), "1-2"))
g = QgsGraduatedSymbolRendererV2('"id"', ranges)
QgsRuleBasedRendererV2.refineRuleRanges(self.r3, g)
assert self.r3.children()[0].filterExpression() == '"id" >= 0.0000 AND "id" <= 1.0000'
assert self.r3.children()[1].filterExpression() == '"id" > 1.0000 AND "id" <= 2.0000'
def testConvertFromGraduatedRenderer(self):
# Test converting graduated renderer to rule based
# First, try with a field based category (id)
ranges = []
ranges.append(QgsRendererRangeV2(0, 1, QgsMarkerSymbolV2(), "0-1"))
ranges.append(QgsRendererRangeV2(1, 2, QgsMarkerSymbolV2(), "1-2"))
g = QgsGraduatedSymbolRendererV2("id", ranges)
r = QgsRuleBasedRendererV2.convertFromRenderer(g)
self.assertEqual(r.rootRule().children()[0].filterExpression(), '"id" >= 0.000000 AND "id" <= 1.000000')
self.assertEqual(r.rootRule().children()[1].filterExpression(), '"id" > 1.000000 AND "id" <= 2.000000')
# Next try with an expression based range
ranges = []
ranges.append(QgsRendererRangeV2(0, 1, QgsMarkerSymbolV2(), "0-1"))
ranges.append(QgsRendererRangeV2(1, 2, QgsMarkerSymbolV2(), "1-2"))
g = QgsGraduatedSymbolRendererV2("id / 2", ranges)
r = QgsRuleBasedRendererV2.convertFromRenderer(g)
self.assertEqual(r.rootRule().children()[0].filterExpression(), '(id / 2) >= 0.000000 AND (id / 2) <= 1.000000')
self.assertEqual(r.rootRule().children()[1].filterExpression(), '(id / 2) > 1.000000 AND (id / 2) <= 2.000000')
# Last try with an expression which is just a quoted field name
ranges = []
ranges.append(QgsRendererRangeV2(0, 1, QgsMarkerSymbolV2(), "0-1"))
ranges.append(QgsRendererRangeV2(1, 2, QgsMarkerSymbolV2(), "1-2"))
g = QgsGraduatedSymbolRendererV2('"id"', ranges)
r = QgsRuleBasedRendererV2.convertFromRenderer(g)
self.assertEqual(r.rootRule().children()[0].filterExpression(), '"id" >= 0.000000 AND "id" <= 1.000000')
self.assertEqual(r.rootRule().children()[1].filterExpression(), '"id" > 1.000000 AND "id" <= 2.000000')
def __getGraduatedSymbolRenderer(self):
"""docstring for __getGraduatedSymbolRenderer"""
#Comprobar que los atributos sean el mismo, sino renderizar por basado en reglas
if len(set(self.attributes)) != 1:
return self.__getRuleBasedRenderer()
rangelist = []
field = self.has_classitem if self.has_classitem == self.attributes[
0] else self.attributes[0]
for exp, msclass in zip(self.expressions[::-1],
self.mslayer["classes"][::-1]):
Symbol = SymbolImport(msclass, self.qgslayer, self.geom_type, self.sizeunits, \
self.mssymbols, self.symbolsetpath, self.fontset)
symbol = Symbol.getSymbol()
label = msclass.get("name", exp[1])
render = False if msclass.get("status",
'on').lower() == 'off' else True
rangelist.append(
QgsRendererRangeV2(exp[3], exp[4], symbol, label, render))
renderer = QgsGraduatedSymbolRendererV2(field, rangelist)
renderer.setMode(QgsGraduatedSymbolRendererV2.Custom)
return renderer
def createChoropleth(self, layer, min, max, num_classes=10):
myTargetField = HASC().valueField
myRangeList = []
myOpacity = 1
step = (max - min) / num_classes
col_step = 256 / (num_classes - 1)
for i in range(num_classes):
label = str(min + step * i) + " - " + str(min + step * (i + 1))
hex_level = hex(int(col_step * i)).split('x')[1]
if (len(hex_level) < 2):
hex_level = "0" + hex_level
colour = "#" + hex_level + hex_level + hex_level
symbol = QgsFillSymbolV2.createSimple({
'color': colour,
'color_border': colour,
'width_border': '0'
})
symbol.setAlpha(myOpacity)
myRangeList.append(
QgsRendererRangeV2(min + step * i, min + step * (i + 1),
symbol, label))
renderer = QgsGraduatedSymbolRendererV2('', myRangeList)
renderer.setMode(QgsGraduatedSymbolRendererV2.EqualInterval)
renderer.setClassAttribute(myTargetField)
layer.setRendererV2(renderer)
def symbolize(self):
# define ranges: label, lower value, upper value, color name
temp_cat = (('0-10', 0.0, 10.0, '"#0024E3'), ('10-12', 10.0, 12.0,
'#0087CD'),
('12-14', 12.0, 14.0,
'#16F45A'), ('14-16', 14.0, 16.0,
'#73FF1A'), ('16-18', 16.0, 18.0, '#BDFF0C'),
('18-20', 18.0, 20.0,
'#FFDD00'), ('20-22', 20.0, 22.0,
'#FF9000'), ('22-24', 22.0, 24.0, '#FF4400'),
('24-26', 24.0, 26.0,
'#FF1D00'), ('26-28', 26.0, 28.0,
'F70000'), ('>28', 28.0, 40.0, '#AA0000'))
# create a category for each item in Augmean
ranges = []
for label, lower, upper, color in temp_cat:
symbol = QgsSymbolV2.defaultSymbol(self.layer.geometryType())
symbol.setColor(QColor(color))
symbol.setWidth(0.5)
rng = QgsRendererRangeV2(lower, upper, symbol, label)
ranges.append(rng)
# create the renderer and assign it to a layer
expression = []
for feature in layer.getFeatures():
attrs = feature.attributes()
sum(attrs[29:33]) / 6
self.renderer = QgsGraduatedSymbolRendererV2(expression, ranges)
def showLegend(self, layer, field, setting_list):
if not self.cellstyle:
self.styleManager = QgsMapLayerStyleManager(layer)
self.styleManager.addStyleFromLayer(u'默认')
self.cellstyle = True
ranges = []
flabel = QLabel(field)
fl = QHBoxLayout()
fl.addWidget(flabel)
self.vbox.addLayout(fl)
for bl in setting_list:
widget = QWidget(self)
widget.setStyleSheet('QWidget {background-color:%s}' %
bl[0].name())
widget.resize(20, 20)
label = QLabel(str(bl[1]) + u'—' + str(bl[2]))
c = QHBoxLayout()
c.addWidget(widget)
c.addWidget(label)
c.setStretchFactor(widget, 1)
c.setStretchFactor(label, 3)
self.vbox.addLayout(c)
sym = QgsSymbolV2.defaultSymbol(layer.geometryType())
sym.setColor(bl[0])
rng = QgsRendererRangeV2(bl[1], bl[2], sym, label.text())
ranges.append(rng)
self.vbox.addStretch(1)
self.setLayout(self.vbox)
renderer = QgsGraduatedSymbolRendererV2(field, ranges)
layer.setRendererV2(renderer)
self.iface.actionDraw().trigger()
def create_join_renderer(self, layer, field, classes, mode, color='PuBu'):
symbol = QgsSymbolV2.defaultSymbol(layer.geometryType())
style = QgsStyleV2().defaultStyle()
colorRamp = style.colorRampRef(color)
renderer = QgsGraduatedSymbolRendererV2.createRenderer(layer, field, classes, mode, symbol, colorRamp)
label_format = self.create_join_label_format(2)
renderer.setLabelFormat(label_format)
return renderer
def create_join_renderer(layer, field, classes, mode, color='Blues'):
symbol = QgsSymbolV2.defaultSymbol(layer.geometryType())
style = QgsStyleV2().defaultStyle()
colorRamp = style.colorRampRef(color)
renderer = QgsGraduatedSymbolRendererV2.createRenderer(
layer, field, classes, mode, symbol, colorRamp)
label_format = create_join_label_format(2)
renderer.setLabelFormat(label_format)
return renderer
def render_and_save_pointwise_output_layer(
self,
pointwise_output_csv_filepath,
output_layer_name,
on_values_of_attribute,
graduated_rendering_interval_points,
shapefile_path=''):
uri = 'file:///' + pointwise_output_csv_filepath + \
'?delimiter=%s&crs=epsg:32643&xField=%s&yField=%s' % (',', 'X', 'Y')
output_layer = QgsVectorLayer(uri, output_layer_name, 'delimitedtext')
if 'Crop' in on_values_of_attribute:
ET_D_max = max([
point.budget.PET_minus_AET_crop_end
for point in model_calculator.output_grid_points
])
elif 'Monsoon' in on_values_of_attribute:
ET_D_max = max([
point.budget.PET_minus_AET_monsoon_end
for point in model_calculator.output_grid_points
])
graduated_symbol_renderer_range_list = []
opacity = 1
intervals_count = len(graduated_rendering_interval_points)
for i in range(intervals_count):
interval_min = 0 if graduated_rendering_interval_points[
i] == 0 else (
graduated_rendering_interval_points[i] * ET_D_max / 100.0 +
0.01)
interval_max = (graduated_rendering_interval_points * ET_D_max /
100.0)
label = "{0:.2f} - {1:.2f}".format(interval_min, interval_max)
colour = QColor(
int(255 * (1 - (i + 1.0) / (intervals_count + 1.0))), 0,
0) # +1 done to tackle boundary cases
symbol = QgsSymbolV2.defaultSymbol(output_layer.geometryType())
symbol.setColor(colour)
symbol.setAlpha(opacity)
interval_range = QgsRendererRangeV2(interval_min, interval_max,
symbol, label)
graduated_symbol_renderer_range_list.append(interval_range)
renderer = QgsGraduatedSymbolRendererV2(
'', graduated_symbol_renderer_range_list)
renderer.setMode(QgsGraduatedSymbolRendererV2.EqualInterval)
renderer.setClassAttribute(on_values_of_attribute)
output_layer.setRendererV2(renderer)
QgsMapLayerRegistry.instance().addMapLayer(output_layer)
if shapefile_path != '':
QgsVectorFileWriter.writeAsVectorFormat(output_layer,
shapefile_path, "utf-8",
None, "ESRI Shapefile")
return output_layer
def make_graduated_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 = QgsMarkerSymbolV2().createSimple({})
symbol.deleteSymbolLayer(0)
mark_sym_lay = QgsSimpleMarkerSymbolLayerV2()
symbol.appendSymbolLayer(mark_sym_lay)
# renderer.setSourceSymbol(symbol)
renderer.updateSymbols(symbol)
return renderer
def makeGraduatedRendererFromDivisionsList(layer, fieldName, divisions):
classes = len(divisions) - 1
rangeList = []
for i in range(classes):
label = str(divisions[i]) + " - " + str(divisions[i + 1])
rangeList.append(
makeSymbologyForRange(layer, divisions[i], divisions[i + 1], label,
arbitaryColor(i, classes)))
renderer = QgsGraduatedSymbolRendererV2(fieldName, rangeList)
renderer.setMode(QgsGraduatedSymbolRendererV2.Custom)
return renderer
def _apply_symbology_fixed_divisions(self, layer, field, tbl_name, schema,
min_v, max_v, steps):
"""Finds the amount of levels that is necessary to describe the layer,
a maximum of 20 different levels is set"""
if min_v is not None and max_v is not None:
distinct_values = list(np.arange(min_v, max_v, steps))
else:
distinct = self.DB.get_distinct(tbl_name, field, schema)
distinct_values = []
distinct_count = []
for value, count in distinct:
distinct_values.append(value)
distinct_count.append(count)
if len(distinct_values) > 20:
distinct_values.sort()
temp_list = []
for val in range(0, len(distinct_values),
int(round(len(distinct_values) / 20))):
temp_list.append(distinct_values[val])
distinct_values = temp_list
colors = self._create_colors(len(distinct_values))
try:
range_list = []
for i in range(len(distinct_values) - 1):
red, green, blue = colors[i]
range_list.append(
self._make_symbology(
layer, distinct_values[i], distinct_values[i + 1],
str(distinct_values[i]) + ' - ' +
str(distinct_values[i + 1]),
QColor(int(red * 255), int(green * 255),
int(blue * 255), 128)))
renderer = QgsGraduatedSymbolRendererV2(field, range_list)
renderer.setMode(QgsGraduatedSymbolRendererV2.Custom)
except TypeError:
categories = []
for i in range(len(distinct_values)):
symbol = QgsSymbolV2.defaultSymbol(layer.geometryType())
red, green, blue = colors[i]
symbol.setColor(
QColor(int(red * 255), int(green * 255), int(blue * 255),
128))
symbol.symbolLayer(0).setOutlineColor(
QColor(int(red * 255), int(green * 255), int(blue * 255),
128))
category = QgsRendererCategoryV2(str(distinct_values[i]),
symbol,
str(distinct_values[i]))
categories.append(category)
renderer = QgsCategorizedSymbolRendererV2(field, categories)
#renderer.setMode(QgsCategorizedSymbolRendererV2.Custom)
layer.setRendererV2(renderer)
def prepare_renderer(levels, inter_time, lenpoly):
cats = [('{} - {} min'.format(levels[i] - inter_time, levels[i]),
levels[i] - inter_time, levels[i])
for i in xrange(lenpoly)] # label, lower bound, upper bound
colors = get_isochrones_colors(len(levels))
ranges = []
for ix, cat in enumerate(cats):
symbol = QgsFillSymbolV2()
symbol.setColor(QtGui.QColor(colors[ix]))
rng = QgsRendererRangeV2(cat[1], cat[2], symbol, cat[0])
ranges.append(rng)
expression = 'max'
return QgsGraduatedSymbolRendererV2(expression, ranges)
def add_symbology(self):
low_color = self.color_low_value.color()
high_color = self.color_high_value.color()
index = self.cbx_mode.currentIndex()
mode = self.cbx_mode.itemData(index)
classes = self.spinBox_classes.value()
# Compute renderer
# noinspection PyArgumentList
symbol = QgsSymbolV2.defaultSymbol(QGis.Polygon)
color_ramp = QgsVectorGradientColorRampV2(low_color, high_color)
# noinspection PyArgumentList
renderer = QgsGraduatedSymbolRendererV2.createRenderer(
self.output_layer, self.name_field, classes, mode, symbol,
color_ramp)
self.output_layer.setRendererV2(renderer)
def testQgsGraduatedSymbolRendererV2_3(self):
"""Test QgsGraduatedSymbolRendererV2: Reading attribute data, calculating classes """
# Create a renderer
renderer = QgsGraduatedSymbolRendererV2()
symbol = createMarkerSymbol()
renderer.setSourceSymbol(symbol.clone())
# Test retrieving data values from a layer
ml = createMemoryLayer((1.2, 0.5, 5.0, 1.0, 1.0, 1.2))
# ... by attribute
renderer.setClassAttribute("value")
self.assertEqual(renderer.classAttribute(), "value",
"Error in set/get classAttribute")
data = renderer.getDataValues(ml)
datastr = ':'.join([str(x) for x in data])
self.assertEqual(datastr, '1.2:0.5:5.0:1.0:1.0:1.2',
"Error returning field data")
# ... by expression
renderer.setClassAttribute('"value"*"value"')
self.assertEqual(renderer.classAttribute(), '"value"*"value"',
"Error in set/get classAttribute")
data = renderer.getDataValues(ml)
datastr = ':'.join([str(x) for x in data])
self.assertEqual(datastr, '1.44:0.25:25.0:1.0:1.0:1.44',
"Error returning field expression")
renderer.setClassAttribute("value")
# Equal interval calculations
renderer.updateClasses(ml, renderer.EqualInterval, 3)
self.assertEqual(dumpRangeBreaks(renderer.ranges()),
'(0.5000-2.0000,2.0000-3.5000,3.5000-5.0000,)',
'Equal interval classification not correct')
# Quantile classes
renderer.updateClasses(ml, renderer.Quantile, 3)
self.assertEqual(dumpRangeBreaks(renderer.ranges()),
'(0.5000-1.0000,1.0000-1.2000,1.2000-5.0000,)',
'Quantile classification not correct')
renderer.updateClasses(ml, renderer.Quantile, 4)
self.assertEqual(
dumpRangeBreaks(renderer.ranges()),
'(0.5000-1.0000,1.0000-1.1000,1.1000-1.2000,1.2000-5.0000,)',
'Quantile classification not correct')
def add_symbology(self):
low_color = self.color_low_value.color()
high_color = self.color_high_value.color()
index = self.cbx_mode.currentIndex()
mode = self.cbx_mode.itemData(index)
classes = self.spinBox_classes.value()
# Compute renderer
# noinspection PyArgumentList
symbol = QgsSymbolV2.defaultSymbol(QGis.Polygon)
color_ramp = QgsVectorGradientColorRampV2(low_color, high_color)
# noinspection PyArgumentList
renderer = QgsGraduatedSymbolRendererV2.createRenderer(
self.output_layer,
self.name_field,
classes,
mode,
symbol,
color_ramp)
self.output_layer.setRendererV2(renderer)
def setGraduatedStyle(vl, ranges, field, **kwargs):
""" set a graduated style """
# make a symbol for each range
rangeV2List = []
for min_val, max_val, attrs in ranges:
if 'label' in attrs:
label = attrs['label']
#elif min_val == None:
# label = u'%s <= %s' % (field, max_val)
#elif max_val == None:
# label = u'%s > %s' % (field, min_val)
else:
label = u'%s < %s <= %s' % (min_val, field, max_val)
symbolV2 = QgsSymbolV2.defaultSymbol(vl.geometryType())
if 'color' in attrs:
symbolV2.setColor(attrs['color'])
if 'size' in attrs:
symbolV2.setSize(attrs['size'])
# from QGis > 1.8 QgsMarkerSymbolV2 has 2 scale methods: ScaleArea and ScaleDiameter
if 'sizeScaleMethod' in kwargs and hasattr(symbolV2,
'setScaleMethod'):
symbolV2.setScaleMethod(kwargs['sizeScaleMethod'])
rangeV2 = QgsRendererRangeV2(min_val, max_val, symbolV2, label)
rangeV2List.append(rangeV2)
# create the renderer
renderer = QgsGraduatedSymbolRendererV2(field, rangeV2List)
# set size scale field
if 'sizeScaleField' in kwargs:
renderer.setSizeScaleField(kwargs['sizeScaleField'])
# set the renderer for the layer
vl.setRendererV2(renderer)
Utils.iface.legendInterface().refreshLayerSymbology(vl)
def setVectorErosionStyle(self, layer):
# define ranges: label, lower value, upper value, hex value of color
g_values = (
(self.tr('Very weakly endangered'), 0.0, 1.0, '#458b00'),
(self.tr('Weakly endangered'), 1.0, 2.0, '#bcee68'),
(self.tr('Moderately endangered'), 2.0, 4.0, '#eedd82'),
(self.tr('Severely endangered'), 4.0, 8.0, '#ffa07a'),
(self.tr('Very severely endangered'), 8.0, 10.0, '#ff4500'),
(self.tr('Extremely endangered'), 10.0, 999999.9, '#8b2500'),
)
# create a category for each item in g_values
ranges = []
for label, lower, upper, color in g_values:
symbol = QgsSymbolV2.defaultSymbol(layer.geometryType())
symbol.setColor(QColor(color))
rng = QgsRendererRangeV2(lower, upper, symbol, label)
ranges.append(rng)
# create the renderer and assign it to a layer
expression = 'G' # field name
renderer = QgsGraduatedSymbolRendererV2(expression, ranges)
layer.setRendererV2(renderer)
def updateSymbology(self):
if self._layer and self._layer.isValid():
att_values = [
f[self.target_field]
for f in self._layer.dataProvider().getFeatures()
]
intervs = self._intervalValues(att_values)
colors = self._colorValues()
range_list = []
for v_min, v_max, col in zip(intervs[:-1], intervs[1:], colors):
symbol = QgsSymbolV2.defaultSymbol(self._layer.geometryType())
symbol.setColor(col)
symbol.setWidth(self.LINE_WIDTH_PIX)
label = '{:0.2f}%->{:0.2f}%'.format(v_min, v_max)
range_ = QgsRendererRangeV2(v_min, v_max, symbol, label)
range_list.append(range_)
renderer = QgsGraduatedSymbolRendererV2('', range_list)
renderer.setMode(QgsGraduatedSymbolRendererV2.Custom)
renderer.setClassAttribute(self.target_field)
self._layer.setRendererV2(renderer)
self._layer.triggerRepaint()
def setBpejStyle(self, layer):
# define ranges: label, lower value, upper value, hex value of color
k_values = (
(self.tr('0.0-0.1'), 0.0, 0.1, '#458b00'),
(self.tr('0.1-0.2'), 0.1, 0.2, '#bcee68'),
(self.tr('0.2-0.3'), 0.2, 0.3, '#eedd82'),
(self.tr('0.3-0.4'), 0.3, 0.4, '#ffa07a'),
(self.tr('0.4-0.5'), 0.4, 0.5, '#ff4500'),
(self.tr('0.5 and more'), 0.5, 9999.0, '#8b2500'),
)
# create a category for each item in k_values
ranges = []
for label, lower, upper, color in k_values:
symbol = QgsSymbolV2.defaultSymbol(layer.geometryType())
symbol.setColor(QColor(color))
rng = QgsRendererRangeV2(lower, upper, symbol, label)
ranges.append(rng)
# create the renderer and assign it to a layer
expression = 'K' # field name
renderer = QgsGraduatedSymbolRendererV2(expression, ranges)
layer.setRendererV2(renderer)
def applySymbologyFixedDivisions(layer, field):
colors = field.get_colour_scale()
ranges = field.get_values_ranges()
labels = field.get_style_labels()
column_name = field.ium_column
#print colors, ranges, labels
rangeList = []
for i, range in enumerate(ranges):
rangeList.append(
makeSymbologyForRange(layer, range[0], range[1], labels[i],
QColor(colors[i])))
renderer = QgsGraduatedSymbolRendererV2(column_name, rangeList)
for i in renderer.symbols():
i.symbolLayer(0).setOutlineColor(QColor("#ffffff"))
try:
i.symbolLayer(0).setBorderWidth(0.000001)
except AttributeError: # if line layer
pass
#i.symbolLayer(0).setOutputUnit(1)
renderer.setMode(QgsGraduatedSymbolRendererV2.Custom)
layer.setRendererV2(renderer)
return renderer
def testQgsGraduatedSymbolRendererV2_2(self):
"""Test QgsGraduatedSymbolRendererV2: Adding /removing/editing classes """
# Create a renderer
renderer = QgsGraduatedSymbolRendererV2()
symbol = createMarkerSymbol()
renderer.setSourceSymbol(symbol.clone())
symbol.setColor(QColor(255, 0, 0))
# Add class without start and end ranges
renderer.addClass(symbol.clone())
renderer.addClass(symbol.clone())
renderer.updateRangeLabel(1, 'Second range')
renderer.updateRangeLowerValue(1, 10.0)
renderer.updateRangeUpperValue(1, 25.0)
renderer.updateRangeRenderState(1, False)
symbol.setColor(QColor(0, 0, 255))
renderer.updateRangeSymbol(1, symbol.clone())
# Add as a rangeobject
symbol.setColor(QColor(0, 255, 0))
range = QgsRendererRangeV2(20.0, 25.5, symbol.clone(), 'Third range', False)
renderer.addClassRange(range)
# Add class by lower and upper
renderer.addClassLowerUpper(25.5, 30.5)
# (Update label for sorting tests)
renderer.updateRangeLabel(3, 'Another range')
self.assertEqual(
dumpRangeLabels(renderer.ranges()),
'(0.0 - 0.0,Second range,Third range,Another range,)',
'Added ranges labels not correct')
self.assertEqual(
dumpRangeBreaks(renderer.ranges()),
'(0.0000-0.0000,10.0000-25.0000,20.0000-25.5000,25.5000-30.5000,)',
'Added ranges lower/upper values not correct')
# Check that clone function works
renderer2 = renderer.clone()
self.assertEqual(
dumpGraduatedRenderer(renderer),
dumpGraduatedRenderer(renderer2),
"clone function doesn't replicate renderer properly"
)
# Check save and reload from Dom works
doc = QDomDocument()
element = renderer.save(doc)
renderer2 = QgsGraduatedSymbolRendererV2.create(element)
self.assertEqual(
dumpGraduatedRenderer(renderer),
dumpGraduatedRenderer(renderer2),
"Save/create from DOM doesn't replicate renderer properly"
)
# Check sorting
renderer.sortByLabel()
self.assertEqual(
dumpRangeList(renderer.ranges(), labelsOnly=True),
'(0.0 - 0.0,Another range,Second range,Third range,)',
'sortByLabel not correct')
renderer.sortByValue()
self.assertEqual(
dumpRangeBreaks(renderer.ranges()),
'(0.0000-0.0000,10.0000-25.0000,20.0000-25.5000,25.5000-30.5000,)',
'sortByValue not correct')
renderer.sortByValue(Qt.DescendingOrder)
self.assertEqual(
dumpRangeBreaks(renderer.ranges()),
'(25.5000-30.5000,20.0000-25.5000,10.0000-25.0000,0.0000-0.0000,)',
'sortByValue descending not correct')
# Check deleting
renderer.deleteClass(2)
self.assertEqual(
dumpRangeBreaks(renderer.ranges()),
'(25.5000-30.5000,20.0000-25.5000,0.0000-0.0000,)',
'deleteClass not correct')
renderer.deleteAllClasses()
self.assertEqual(len(renderer.ranges()), 0, "deleteAllClasses didn't delete all")
def render_old(layer,field):
myTargetField = field
myRangeList = []
myOpacity = 1
# symbol
mySymbol = QgsSymbolV2.defaultSymbol(layer.geometryType())
mySymbol.setColor(QColor('#FFFFFF'))
mySymbol.setAlpha(myOpacity)
myRange = QgsRendererRangeV2(-150.0,0.0,mySymbol,"No level")
myRangeList.append(myRange)
# symbol
mySymbol = QgsSymbolV2.defaultSymbol(layer.geometryType())
mySymbol.setColor(QColor('#C0FFC0'))
mySymbol.setAlpha(myOpacity)
myRange = QgsRendererRangeV2(0.1,34.9,mySymbol,"< 35 dB(A)")
myRangeList.append(myRange)
# symbol
mySymbol = QgsSymbolV2.defaultSymbol(layer.geometryType())
mySymbol.setColor(QColor('#00CC00'))
mySymbol.setAlpha(myOpacity)
myRange = QgsRendererRangeV2(35.0,39.9,mySymbol,"35 - 40 dB(A)")
myRangeList.append(myRange)
# symbol
mySymbol = QgsSymbolV2.defaultSymbol(layer.geometryType())
mySymbol.setColor(QColor('#005000'))
mySymbol.setAlpha(myOpacity)
myRange = QgsRendererRangeV2(40.0,44.9,mySymbol,"40 - 45 dB(A)")
myRangeList.append(myRange)
# symbol
mySymbol = QgsSymbolV2.defaultSymbol(layer.geometryType())
mySymbol.setColor(QColor('#FFFF00'))
mySymbol.setAlpha(myOpacity)
myRange = QgsRendererRangeV2(45.0,49.9,mySymbol,"45 - 50 dB(A)")
myRangeList.append(myRange)
# symbol
mySymbol = QgsSymbolV2.defaultSymbol(layer.geometryType())
mySymbol.setColor(QColor('#FFC74A'))
mySymbol.setAlpha(myOpacity)
myRange = QgsRendererRangeV2(50.0,54.9,mySymbol,"50 - 55 dB(A)")
myRangeList.append(myRange)
# symbol
mySymbol = QgsSymbolV2.defaultSymbol(layer.geometryType())
mySymbol.setColor(QColor('#FF6600'))
mySymbol.setAlpha(myOpacity)
myRange = QgsRendererRangeV2(55.0,59.9,mySymbol,"55 - 60 dB(A)")
myRangeList.append(myRange)
# symbol
mySymbol = QgsSymbolV2.defaultSymbol(layer.geometryType())
mySymbol.setColor(QColor('#FF3333'))
mySymbol.setAlpha(myOpacity)
myRange = QgsRendererRangeV2(60.0,64.9,mySymbol,"60 - 65 dB(A)")
myRangeList.append(myRange)
# symbol
mySymbol = QgsSymbolV2.defaultSymbol(layer.geometryType())
mySymbol.setColor(QColor('#990033'))
mySymbol.setAlpha(myOpacity)
myRange = QgsRendererRangeV2(65.0,69.9,mySymbol,"65 - 70 dB(A)")
myRangeList.append(myRange)
# symbol
mySymbol = QgsSymbolV2.defaultSymbol(layer.geometryType())
mySymbol.setColor(QColor('#AD9AD6'))
mySymbol.setAlpha(myOpacity)
myRange = QgsRendererRangeV2(70.0,74.9,mySymbol,"70 - 75 dB(A)")
myRangeList.append(myRange)
# symbol
mySymbol = QgsSymbolV2.defaultSymbol(layer.geometryType())
mySymbol.setColor(QColor('#0000FF'))
mySymbol.setAlpha(myOpacity)
myRange = QgsRendererRangeV2(75.0,79.9,mySymbol,"75 - 80 dB(A)")
myRangeList.append(myRange)
# symbol
mySymbol = QgsSymbolV2.defaultSymbol(layer.geometryType())
mySymbol.setColor(QColor('#000066'))
mySymbol.setAlpha(myOpacity)
myRange = QgsRendererRangeV2(80.0,150.0,mySymbol,"> 80 dB(A)")
myRangeList.append(myRange)
myRenderer = QgsGraduatedSymbolRendererV2('', myRangeList)
myRenderer.setMode(QgsGraduatedSymbolRendererV2.EqualInterval)
myRenderer.setClassAttribute(myTargetField)
layer.setRendererV2(myRenderer)
iface.legendInterface().refreshLayerSymbology(layer)
#layer.reload()
#iface.mapCanvas().refresh()
layer.triggerRepaint()
def applyGraduatedSymbolRenderer(layer, fieldName):
renderer = QgsGraduatedSymbolRendererV2()
renderer.setClassAttribute(fieldName)
layer.setRendererV2(renderer)
layer.rendererV2().updateClasses(layer, QgsGraduatedSymbolRendererV2.Jenks,
5)
def testQgsGraduatedSymbolRendererV2_1(self):
"""Test QgsGraduatedSymbolRendererV2: Basic get/set functions """
# Create a renderer
renderer = QgsGraduatedSymbolRendererV2()
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 (
QgsGraduatedSymbolRendererV2.Custom,
QgsGraduatedSymbolRendererV2.EqualInterval,
QgsGraduatedSymbolRendererV2.Quantile,
QgsGraduatedSymbolRendererV2.Jenks,
QgsGraduatedSymbolRendererV2.Pretty,
QgsGraduatedSymbolRendererV2.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 = QgsSymbolLayerV2Utils.fieldOrExpressionToExpression(value)
valuestr = QgsSymbolLayerV2Utils.fieldOrExpressionFromExpression(exp)
renderer.setRotationField(value)
self.assertEqual(valuestr, renderer.rotationField(),
"Get/set renderer rotation field")
value = '"value"*3'
exp = QgsSymbolLayerV2Utils.fieldOrExpressionToExpression(value)
valuestr = QgsSymbolLayerV2Utils.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 (
QgsSymbolV2.ScaleArea,
QgsSymbolV2.ScaleDiameter,
):
renderer.setScaleMethod(sm)
self.assertEqual(str(sm), str(renderer.scaleMethod()),
"Get/set renderer scale method")
# test for classificatio with varying size
renderer.setGraduatedMethod(QgsGraduatedSymbolRendererV2.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 testQgsGraduatedSymbolRendererV2_2(self):
"""Test QgsGraduatedSymbolRendererV2: Adding /removing/editing classes """
# Create a renderer
renderer = QgsGraduatedSymbolRendererV2()
symbol = createMarkerSymbol()
renderer.setSourceSymbol(symbol.clone())
symbol.setColor(QColor(255, 0, 0))
# Add class without start and end ranges
renderer.addClass(symbol.clone())
renderer.addClass(symbol.clone())
renderer.updateRangeLabel(1, 'Second range')
renderer.updateRangeLowerValue(1, 10.0)
renderer.updateRangeUpperValue(1, 25.0)
renderer.updateRangeRenderState(1, False)
symbol.setColor(QColor(0, 0, 255))
renderer.updateRangeSymbol(1, symbol.clone())
# Add as a rangeobject
symbol.setColor(QColor(0, 255, 0))
range = QgsRendererRangeV2(20.0, 25.5, symbol.clone(), 'Third range',
False)
renderer.addClassRange(range)
# Add class by lower and upper
renderer.addClassLowerUpper(25.5, 30.5)
# (Update label for sorting tests)
renderer.updateRangeLabel(3, 'Another range')
self.assertEqual(
dumpRangeLabels(renderer.ranges()),
'(0.0 - 0.0,Second range,Third range,Another range,)',
'Added ranges labels not correct')
self.assertEqual(
dumpRangeBreaks(renderer.ranges()),
'(0.0000-0.0000,10.0000-25.0000,20.0000-25.5000,25.5000-30.5000,)',
'Added ranges lower/upper values not correct')
# Check that clone function works
renderer2 = renderer.clone()
self.assertEqual(dumpGraduatedRenderer(renderer),
dumpGraduatedRenderer(renderer2),
"clone function doesn't replicate renderer properly")
# Check save and reload from Dom works
doc = QDomDocument()
element = renderer.save(doc)
renderer2 = QgsGraduatedSymbolRendererV2.create(element)
self.assertEqual(
dumpGraduatedRenderer(renderer), dumpGraduatedRenderer(renderer2),
"Save/create from DOM doesn't replicate renderer properly")
# Check sorting
renderer.sortByLabel()
self.assertEqual(
dumpRangeList(renderer.ranges(), labelsOnly=True),
'(0.0 - 0.0,Another range,Second range,Third range,)',
'sortByLabel not correct')
renderer.sortByValue()
self.assertEqual(
dumpRangeBreaks(renderer.ranges()),
'(0.0000-0.0000,10.0000-25.0000,20.0000-25.5000,25.5000-30.5000,)',
'sortByValue not correct')
renderer.sortByValue(Qt.DescendingOrder)
self.assertEqual(
dumpRangeBreaks(renderer.ranges()),
'(25.5000-30.5000,20.0000-25.5000,10.0000-25.0000,0.0000-0.0000,)',
'sortByValue descending not correct')
# Check deleting
renderer.deleteClass(2)
self.assertEqual(dumpRangeBreaks(renderer.ranges()),
'(25.5000-30.5000,20.0000-25.5000,0.0000-0.0000,)',
'deleteClass not correct')
renderer.deleteAllClasses()
self.assertEqual(len(renderer.ranges()), 0,
"deleteAllClasses didn't delete all")
def style_maps(self, layer=None, style_by=None):
if layer is None:
layer = self.layer
if style_by is None:
style_by = self.default_field_name
symbol = QgsSymbolV2.defaultSymbol(layer.geometryType())
# see properties at:
# https://qgis.org/api/qgsmarkersymbollayerv2_8cpp_source.html#l01073
symbol.setAlpha(1) # opacity
if isinstance(symbol, QgsMarkerSymbolV2):
# do it only for the layer with points
self._set_symbol_size(symbol)
symbol.symbolLayer(0).setOutlineStyle(Qt.PenStyle(Qt.NoPen))
style = get_style(layer, self.iface.messageBar())
# this is the default, as specified in the user settings
ramp = QgsVectorGradientColorRampV2(style['color_from'],
style['color_to'])
mode = style['mode']
# in most cases, we override the user-specified setting, and use
# instead a setting that was required by scientists
if self.output_type in OQ_TO_LAYER_TYPES:
default_qgs_style = QgsStyleV2().defaultStyle()
default_color_ramp_names = default_qgs_style.colorRampNames()
if self.output_type in ('dmg_by_asset', 'losses_by_asset',
'avg_losses-stats'):
# options are EqualInterval, Quantile, Jenks, StdDev, Pretty
# jenks = natural breaks
mode = QgsGraduatedSymbolRendererV2.Jenks
ramp_type_idx = default_color_ramp_names.index('Reds')
inverted = False
elif self.output_type in ('hmaps', 'gmf_data', 'ruptures'):
# options are EqualInterval, Quantile, Jenks, StdDev, Pretty
if self.output_type == 'ruptures':
mode = QgsGraduatedSymbolRendererV2.Pretty
else:
mode = QgsGraduatedSymbolRendererV2.EqualInterval
ramp_type_idx = default_color_ramp_names.index('Spectral')
inverted = True
ramp = default_qgs_style.colorRamp(
default_color_ramp_names[ramp_type_idx])
graduated_renderer = QgsGraduatedSymbolRendererV2.createRenderer(
layer,
style_by,
style['classes'],
mode,
symbol,
ramp,
inverted=inverted)
label_format = graduated_renderer.labelFormat()
# label_format.setTrimTrailingZeroes(True) # it might be useful
label_format.setPrecision(2)
graduated_renderer.setLabelFormat(label_format, updateRanges=True)
# add a class for 0 values, unless while styling ruptures
if self.output_type != 'ruptures':
VERY_SMALL_VALUE = 1e-20
graduated_renderer.updateRangeLowerValue(0, VERY_SMALL_VALUE)
symbol_zeros = QgsSymbolV2.defaultSymbol(layer.geometryType())
symbol_zeros.setColor(QColor(240, 240, 240)) # very light grey
if isinstance(symbol, QgsMarkerSymbolV2):
# do it only for the layer with points
self._set_symbol_size(symbol_zeros)
symbol_zeros.symbolLayer(0).setOutlineStyle(
Qt.PenStyle(Qt.NoPen))
zeros_min = 0.0
zeros_max = VERY_SMALL_VALUE
range_zeros = QgsRendererRangeV2(
zeros_min, zeros_max, symbol_zeros,
" %.2f - %.2f" % (zeros_min, zeros_max), True)
graduated_renderer.addClassRange(range_zeros)
graduated_renderer.moveClass(
len(graduated_renderer.ranges()) - 1, 0)
layer.setRendererV2(graduated_renderer)
layer.setLayerTransparency(30) # percent
layer.triggerRepaint()
self.iface.legendInterface().refreshLayerSymbology(layer)
self.iface.mapCanvas().refresh()
def set_vector_graduated_style(vector_layer, style):
"""Set graduated QGIS vector style based on InaSAFE style dictionary.
For **opaque** a value of **0** can be used. For **fully transparent**, a
value of **100** can be used. The calling function should take care to
scale the transparency level to between 0 and 100.
:param vector_layer: A QGIS vector layer that will be styled.
:type vector_layer: QgsVectorLayer, QgsMapLayer
:param style: Dictionary of the form as in the example below
:type style: dict
:returns: None - Sets and saves style for vector_layer
Example style::
{'target_field': 'DMGLEVEL',
'style_classes':
[{'transparency': 1, 'max': 1.5, 'colour': '#fecc5c',
'min': 0.5, 'label': '[0.5 - 1.5] Low damage', 'size' : 1},
{'transparency': 55, 'max': 2.5, 'colour': '#fd8d3c',
'min': 1.5, 'label': '[1.5 - 2.5] Medium damage', 'size' : 1},
{'transparency': 80, 'max': 3.5, 'colour': '#f31a1c',
'min': 2.5, 'label': '[2.5 - 3.5] High damage', 'size' : 1}]}
.. note:: The transparency and size keys are optional. Size applies
to points only.
.. note:: you can optionally pass border_color also, if not color will be
used
.. note:: you can optionally pass data_defined also, this has to be a
dictionary of property: expressions like
{'color': 'color_hsv(%s, "pop"/%s*100, %s)' % (hue, max, val)}
"""
target_field = style['target_field']
style_classes = style['style_classes']
geometry_type = vector_layer.geometryType()
range_list = []
for style_class in style_classes:
# Transparency 100: transparent
# Transparency 0: opaque
size = 2 # mm
if 'size' in style_class:
size = style_class['size']
transparency_percent = 0
if 'transparency' in style_class:
transparency_percent = style_class['transparency']
if 'min' not in style_class:
raise StyleError('Style info should provide a "min" entry')
if 'max' not in style_class:
raise StyleError('Style info should provide a "max" entry')
try:
min_val = float(style_class['min'])
except TypeError:
raise StyleError('Class break lower bound should be a number.'
'I got %s' % style_class['min'])
try:
max_val = float(style_class['max'])
except TypeError:
raise StyleError('Class break upper bound should be a number.'
'I got %s' % style_class['max'])
color = style_class['colour']
label = style_class['label']
color = QtGui.QColor(color)
# noinspection PyArgumentList
symbol = QgsSymbolV2.defaultSymbol(geometry_type)
# We need to create a custom symbol layer as
# the border colour of a symbol can not be set otherwise
# noinspection PyArgumentList
try:
value = style_class['border_color']
border_color = QtGui.QColor(value)
except KeyError:
border_color = color
if geometry_type == QGis.Point:
symbol_layer = QgsSimpleMarkerSymbolLayerV2()
symbol_layer.setBorderColor(border_color)
symbol_layer.setSize(size)
symbol.changeSymbolLayer(0, symbol_layer)
elif geometry_type == QGis.Polygon:
symbol_layer = QgsSimpleFillSymbolLayerV2()
symbol_layer.setBorderColor(border_color)
symbol.changeSymbolLayer(0, symbol_layer)
else:
# for lines we do nothing special as the property setting
# below should give us what we require.
pass
try:
value = style_class['border_wdth']
symbol_layer.setBorderWidth(value)
except (NameError, KeyError):
# use QGIS default border size
# NameError is when symbol_layer is not defined (lines for example)
# KeyError is when borderWidth is not defined
if hasattr(symbol_layer, 'setBorderWidth') and \
geometry_type == QGis.Polygon:
symbol_layer.setBorderWidth(0)
# set data defined properties
try:
for prop, expr in style_class['data_defined'].iteritems():
symbol_layer.setDataDefinedProperty(prop, expr)
except (NameError, KeyError):
# NameError is when symbol_layer is not defined (lines for example)
# KeyError is when data_defined is not defined
pass
symbol.setColor(color)
# .. todo:: Check that vectors use alpha as % otherwise scale TS
# Convert transparency % to opacity
# alpha = 0: transparent
# alpha = 1: opaque
alpha = 1 - transparency_percent / 100.0
symbol.setAlpha(alpha)
range_renderer = QgsRendererRangeV2(min_val, max_val, symbol, label)
range_list.append(range_renderer)
renderer = QgsGraduatedSymbolRendererV2('', range_list)
renderer.setMode(QgsGraduatedSymbolRendererV2.EqualInterval)
renderer.setClassAttribute(target_field)
vector_layer.setRendererV2(renderer)
vector_layer.saveDefaultStyle()
def render(layer,field):
myTargetField = field
myRangeList = []
myOpacity = 1
# symbol
mySymbol = QgsSymbolV2.defaultSymbol(layer.geometryType())
mySymbol.setColor(QColor('#D8D8D8'))
mySymbol.setAlpha(myOpacity)
myRange = QgsRendererRangeV2(-150.0,0.0,mySymbol,"No level")
myRangeList.append(myRange)
# symbol
mySymbol = QgsSymbolV2.defaultSymbol(layer.geometryType())
mySymbol.setColor(QColor('#FFFFFF'))
mySymbol.setAlpha(myOpacity)
myRange = QgsRendererRangeV2(0.1,34.4,mySymbol,"< 35 dB(A)")
myRangeList.append(myRange)
# symbol
mySymbol = QgsSymbolV2.defaultSymbol(layer.geometryType())
mySymbol.setColor(QColor('#238443'))
mySymbol.setAlpha(myOpacity)
myRange = QgsRendererRangeV2(34.5,39.4,mySymbol,"35 - 39 dB(A)")
myRangeList.append(myRange)
# symbol
mySymbol = QgsSymbolV2.defaultSymbol(layer.geometryType())
mySymbol.setColor(QColor('#78C679'))
mySymbol.setAlpha(myOpacity)
myRange = QgsRendererRangeV2(39.5,44.4,mySymbol,"40 - 44 dB(A)")
myRangeList.append(myRange)
# symbol
mySymbol = QgsSymbolV2.defaultSymbol(layer.geometryType())
mySymbol.setColor(QColor('#C2E699'))
mySymbol.setAlpha(myOpacity)
myRange = QgsRendererRangeV2(44.5,49.4,mySymbol,"45 - 49 dB(A)")
myRangeList.append(myRange)
# symbol
mySymbol = QgsSymbolV2.defaultSymbol(layer.geometryType())
mySymbol.setColor(QColor('#FFFFB2'))
mySymbol.setAlpha(myOpacity)
myRange = QgsRendererRangeV2(49.5,54.4,mySymbol,"50 - 54 dB(A)")
myRangeList.append(myRange)
# symbol
mySymbol = QgsSymbolV2.defaultSymbol(layer.geometryType())
mySymbol.setColor(QColor('#FECC5C'))
mySymbol.setAlpha(myOpacity)
myRange = QgsRendererRangeV2(54.5,59.4,mySymbol,"55 - 59 dB(A)")
myRangeList.append(myRange)
# symbol
mySymbol = QgsSymbolV2.defaultSymbol(layer.geometryType())
mySymbol.setColor(QColor('#FD8D3C'))
mySymbol.setAlpha(myOpacity)
myRange = QgsRendererRangeV2(59.5,64.4,mySymbol,"60 - 64 dB(A)")
myRangeList.append(myRange)
# symbol
mySymbol = QgsSymbolV2.defaultSymbol(layer.geometryType())
mySymbol.setColor(QColor('#FF0909'))
mySymbol.setAlpha(myOpacity)
myRange = QgsRendererRangeV2(64.5,69.4,mySymbol,"65 - 69 dB(A)")
myRangeList.append(myRange)
# symbol
mySymbol = QgsSymbolV2.defaultSymbol(layer.geometryType())
mySymbol.setColor(QColor('#B30622'))
mySymbol.setAlpha(myOpacity)
myRange = QgsRendererRangeV2(69.5,74.4,mySymbol,"70 - 74 dB(A)")
myRangeList.append(myRange)
# symbol
mySymbol = QgsSymbolV2.defaultSymbol(layer.geometryType())
mySymbol.setColor(QColor('#67033B'))
mySymbol.setAlpha(myOpacity)
myRange = QgsRendererRangeV2(74.5,79.4,mySymbol,"75 - 79 dB(A)")
myRangeList.append(myRange)
# symbol
mySymbol = QgsSymbolV2.defaultSymbol(layer.geometryType())
mySymbol.setColor(QColor('#1C0054'))
mySymbol.setAlpha(myOpacity)
myRange = QgsRendererRangeV2(79.5,150.0,mySymbol,">= 80 dB(A)")
myRangeList.append(myRange)
myRenderer = QgsGraduatedSymbolRendererV2('', myRangeList)
myRenderer.setMode(QgsGraduatedSymbolRendererV2.EqualInterval)
myRenderer.setClassAttribute(myTargetField)
layer.setRendererV2(myRenderer)
iface.legendInterface().refreshLayerSymbology(layer)
#layer.reload()
#iface.mapCanvas().refresh()
layer.triggerRepaint()
def compute_and_display_cadastral_vulnerability(self, cadastral_layer,
output_grid_points,
output_cadastral_points,
crop_index, crop_name,
base_path):
cadastral_points_per_plot = {}
for p in (output_grid_points + output_cadastral_points):
if p.cadastral_polygon is None: continue
if p.lulc_type not in ['agriculture', 'fallow land']: continue
if p.cadastral_polygon.id() in cadastral_points_per_plot:
cadastral_points_per_plot[p.cadastral_polygon.id()].append(
p.budget.PET_minus_AET_crop_end[crop_index])
else:
cadastral_points_per_plot[p.cadastral_polygon.id()] = [
p.budget.PET_minus_AET_crop_end[crop_index]
]
for k, v in cadastral_points_per_plot.items():
if len(v) > 0:
cadastral_points_per_plot[k] = sum(v) / len(v)
else:
del cadastral_points_per_plot[k]
# print cadastral_points_per_plot
# Create duplicate cadastral layer in memory
memory_cadastral_layer = QgsVectorLayer(
'Polygon?crs=epsg:32643',
crop_name + ' Cadastral Level Vulnerability', 'memory')
memory_cadastral_layer.startEditing()
memory_cadastral_layer.dataProvider().addAttributes(
cadastral_layer.qgsLayer.dataProvider().fields().toList())
memory_cadastral_layer.updateFields()
dict_new_feature_id_to_old_feature_id = {}
for old_plot_id in cadastral_points_per_plot:
result, output_features = memory_cadastral_layer.dataProvider(
).addFeatures([cadastral_layer.feature_dict[old_plot_id]])
dict_new_feature_id_to_old_feature_id[
output_features[0].id()] = old_plot_id
memory_cadastral_layer.dataProvider().addAttributes(
[QgsField('Deficit', QVariant.Double)])
memory_cadastral_layer.updateFields()
for new_feature in memory_cadastral_layer.getFeatures():
new_feature['Deficit'] = cadastral_points_per_plot[
dict_new_feature_id_to_old_feature_id[new_feature.id()]]
memory_cadastral_layer.updateFeature(new_feature)
memory_cadastral_layer.commitChanges()
# Graduated Rendering
graduated_symbol_renderer_range_list = []
ET_D_max = max(cadastral_points_per_plot.values())
opacity = 1
geometry_type = memory_cadastral_layer.geometryType()
intervals_count = CADASTRAL_VULNERABILITY_DISPLAY_COLOUR_INTERVALS_COUNT
dict_interval_colour = CADASTRAL_VULNERABILITY_DISPLAY_COLOURS_DICT
for i in range(intervals_count):
interval_min = 0 if i == 0 else (ET_D_max * float(i) /
intervals_count) + 0.01
interval_max = ET_D_max * float(i + 1) / intervals_count
label = "{0:.2f} - {1:.2f}".format(interval_min, interval_max)
colour = QColor(*dict_interval_colour[i])
symbol = QgsSymbolV2.defaultSymbol(geometry_type)
symbol.setColor(colour)
symbol.setAlpha(opacity)
interval_range = QgsRendererRangeV2(interval_min, interval_max,
symbol, label)
graduated_symbol_renderer_range_list.append(interval_range)
renderer = QgsGraduatedSymbolRendererV2(
'', graduated_symbol_renderer_range_list)
renderer.setMode(QgsGraduatedSymbolRendererV2.EqualInterval)
renderer.setClassAttribute('Deficit')
memory_cadastral_layer.setRendererV2(renderer)
QgsMapLayerRegistry.instance().addMapLayer(memory_cadastral_layer)
memory_cadastral_layer.setCustomProperty('labeling', 'pal')
memory_cadastral_layer.setCustomProperty('labeling/enabled', 'true')
memory_cadastral_layer.setCustomProperty('labeling/fieldName',
'Number')
memory_cadastral_layer.setCustomProperty('labeling/fontSize', '10')
memory_cadastral_layer.setCustomProperty('labeling/placement', '0')
memory_cadastral_layer.dataProvider().forceReload()
memory_cadastral_layer.triggerRepaint()
QgsVectorFileWriter.writeAsVectorFormat(
memory_cadastral_layer, base_path + '/kharif_' + crop_name +
'_cadastral_level_vulnerability.shp', "utf-8", None,
"ESRI Shapefile")
def setVectorStyle(theQgisVectorLayer, theStyle):
"""Set QGIS vector style based on InaSAFE style dictionary.
For **opaque** a value of **0** can be used. For **fully transparent**, a
value of **100** can be used. The function should take care to scale the
transparency level to between 0 and 100.
Args:
* theQgisVectorLayer: QgsMapLayer
* theStyle: dict - Dictionary of the form as in the example below
Returns:
None - Sets and saves style for theQgisVectorLayer
Raises:
None
Example:
{'target_field': 'DMGLEVEL',
'style_classes':
[{'transparency': 1, 'max': 1.5, 'colour': '#fecc5c',
'min': 0.5, 'label': 'Low damage', 'size' : 1},
{'transparency': 55, 'max': 2.5, 'colour': '#fd8d3c',
'min': 1.5, 'label': 'Medium damage', 'size' : 1},
{'transparency': 80, 'max': 3.5, 'colour': '#f31a1c',
'min': 2.5, 'label': 'High damage', 'size' : 1}]}
.. note:: The transparency and size keys are optional. Size applies
to points only.
"""
myTargetField = theStyle['target_field']
myClasses = theStyle['style_classes']
myGeometryType = theQgisVectorLayer.geometryType()
myRangeList = []
for myClass in myClasses:
# Transparency 100: transparent
# Transparency 0: opaque
mySize = 2 # mm
if 'size' in myClass:
mySize = myClass['size']
myTransparencyPercent = 0
if 'transparency' in myClass:
myTransparencyPercent = myClass['transparency']
if 'min' not in myClass:
raise StyleError('Style info should provide a "min" entry')
if 'max' not in myClass:
raise StyleError('Style info should provide a "max" entry')
try:
myMin = float(myClass['min'])
except TypeError:
raise StyleError('Class break lower bound should be a number.'
'I got %s' % myClass['min'])
try:
myMax = float(myClass['max'])
except TypeError:
raise StyleError('Class break upper bound should be a number.'
'I got %s' % myClass['max'])
myColour = myClass['colour']
myLabel = myClass['label']
myColour = QtGui.QColor(myColour)
mySymbol = QgsSymbolV2.defaultSymbol(myGeometryType)
myColourString = "%s, %s, %s" % (myColour.red(), myColour.green(),
myColour.blue())
# Work around for the fact that QgsSimpleMarkerSymbolLayerV2
# python bindings are missing from the QGIS api.
# .. see:: http://hub.qgis.org/issues/4848
# We need to create a custom symbol layer as
# the border colour of a symbol can not be set otherwise
myRegistry = QgsSymbolLayerV2Registry.instance()
if myGeometryType == QGis.Point:
myMetadata = myRegistry.symbolLayerMetadata('SimpleMarker')
# note that you can get a list of available layer properties
# that you can set by doing e.g.
# QgsSimpleMarkerSymbolLayerV2.properties()
mySymbolLayer = myMetadata.createSymbolLayer(
{'color_border': myColourString})
mySymbolLayer.setSize(mySize)
mySymbol.changeSymbolLayer(0, mySymbolLayer)
elif myGeometryType == QGis.Polygon:
myMetadata = myRegistry.symbolLayerMetadata('SimpleFill')
mySymbolLayer = myMetadata.createSymbolLayer(
{'color_border': myColourString})
mySymbol.changeSymbolLayer(0, mySymbolLayer)
else:
# for lines we do nothing special as the property setting
# below should give us what we require.
pass
mySymbol.setColor(myColour)
# .. todo:: Check that vectors use alpha as % otherwise scale TS
# Convert transparency % to opacity
# alpha = 0: transparent
# alpha = 1: opaque
alpha = 1 - myTransparencyPercent / 100.0
mySymbol.setAlpha(alpha)
myRange = QgsRendererRangeV2(myMin, myMax, mySymbol, myLabel)
myRangeList.append(myRange)
myRenderer = QgsGraduatedSymbolRendererV2('', myRangeList)
myRenderer.setMode(QgsGraduatedSymbolRendererV2.EqualInterval)
myRenderer.setClassAttribute(myTargetField)
theQgisVectorLayer.setRendererV2(myRenderer)
theQgisVectorLayer.saveDefaultStyle()
def set_vector_graduated_style(vector_layer, style):
"""Set graduated QGIS vector style based on InaSAFE style dictionary.
For **opaque** a value of **0** can be used. For **fully transparent**, a
value of **100** can be used. The calling function should take care to
scale the transparency level to between 0 and 100.
:param vector_layer: A QGIS vector layer that will be styled.
:type vector_layer: QgsVectorLayer, QgsMapLayer
:param style: Dictionary of the form as in the example below
:type style: dict
:returns: None - Sets and saves style for vector_layer
Example style::
{'target_field': 'DMGLEVEL',
'style_classes':
[{'transparency': 1, 'max': 1.5, 'colour': '#fecc5c',
'min': 0.5, 'label': '[0.5 - 1.5] Low damage', 'size' : 1},
{'transparency': 55, 'max': 2.5, 'colour': '#fd8d3c',
'min': 1.5, 'label': '[1.5 - 2.5] Medium damage', 'size' : 1},
{'transparency': 80, 'max': 3.5, 'colour': '#f31a1c',
'min': 2.5, 'label': '[2.5 - 3.5] High damage', 'size' : 1}]}
.. note:: The transparency and size keys are optional. Size applies
to points only.
"""
myTargetField = style['target_field']
myClasses = style['style_classes']
myGeometryType = vector_layer.geometryType()
myRangeList = []
for myClass in myClasses:
# Transparency 100: transparent
# Transparency 0: opaque
mySize = 2 # mm
if 'size' in myClass:
mySize = myClass['size']
myTransparencyPercent = 0
if 'transparency' in myClass:
myTransparencyPercent = myClass['transparency']
if 'min' not in myClass:
raise StyleError('Style info should provide a "min" entry')
if 'max' not in myClass:
raise StyleError('Style info should provide a "max" entry')
try:
myMin = float(myClass['min'])
except TypeError:
raise StyleError('Class break lower bound should be a number.'
'I got %s' % myClass['min'])
try:
myMax = float(myClass['max'])
except TypeError:
raise StyleError('Class break upper bound should be a number.'
'I got %s' % myClass['max'])
myColour = myClass['colour']
myLabel = myClass['label']
myColour = QtGui.QColor(myColour)
# noinspection PyArgumentList
mySymbol = QgsSymbolV2.defaultSymbol(myGeometryType)
# We need to create a custom symbol layer as
# the border colour of a symbol can not be set otherwise
# noinspection PyArgumentList
if myGeometryType == QGis.Point:
mySymbolLayer = QgsSimpleMarkerSymbolLayerV2()
mySymbolLayer.setBorderColor(myColour)
mySymbolLayer.setSize(mySize)
mySymbol.changeSymbolLayer(0, mySymbolLayer)
elif myGeometryType == QGis.Polygon:
mySymbolLayer = QgsSimpleFillSymbolLayerV2()
mySymbolLayer.setBorderColor(myColour)
mySymbol.changeSymbolLayer(0, mySymbolLayer)
else:
# for lines we do nothing special as the property setting
# below should give us what we require.
pass
mySymbol.setColor(myColour)
# .. todo:: Check that vectors use alpha as % otherwise scale TS
# Convert transparency % to opacity
# alpha = 0: transparent
# alpha = 1: opaque
alpha = 1 - myTransparencyPercent / 100.0
mySymbol.setAlpha(alpha)
myRange = QgsRendererRangeV2(myMin, myMax, mySymbol, myLabel)
myRangeList.append(myRange)
myRenderer = QgsGraduatedSymbolRendererV2('', myRangeList)
myRenderer.setMode(QgsGraduatedSymbolRendererV2.EqualInterval)
myRenderer.setClassAttribute(myTargetField)
vector_layer.setRendererV2(myRenderer)
vector_layer.saveDefaultStyle()
def run(self):
"""Run method that performs all the real work"""
#~path = 'C:/Users/Sudhanshu/Downloads/Hivre_Bajar'
#~ path = 'C:/Users/Rahul/Desktop/Gondala1'
#~ path = 'C:/Users/Rahul/Desktop/BW_new'
path = ''
debugging = path != ''
if debugging:
zones_layer = self.iface.addVectorLayer(path + '/Zones.shp',
'Zones', 'ogr')
soil_layer = self.iface.addVectorLayer(path + '/Soil.shp',
'Soil Cover', 'ogr')
lulc_layer = self.iface.addVectorLayer(path + '/LULC.shp',
'Land-Use-Land-Cover',
'ogr')
cadastral_layer = self.iface.addVectorLayer(
path + '/Cadastral.shp', 'Cadastral Map', 'ogr')
slope_layer = self.iface.addRasterLayer(path + '/Slope.tif',
'Slope')
#~ drainage_layer = self.iface.addRasterLayer(path + '/Drainage.shp', 'Drainage', 'ogr')
rainfall_csv = path + '/Rainfall.csv'
sowing_threshold = 30
crop = 'soyabean'
interval_points = [50, 100]
monsoon_end_date_index = MONSOON_END_DATE_INDEX
else:
self.dlg.show()
if self.dlg.exec_() == QFileDialog.Rejected: return
path = self.dlg.folder_path.text()
zones_layer = self.iface.addVectorLayer(
self.dlg.zones_layer_filename.text(), 'Zones', 'ogr')
soil_layer = self.iface.addVectorLayer(
self.dlg.soil_layer_filename.text(), 'Soil Cover', 'ogr')
lulc_layer = self.iface.addVectorLayer(
self.dlg.lulc_layer_filename.text(), 'Land-Use-Land-Cover',
'ogr')
cadastral_layer = self.iface.addVectorLayer(
self.dlg.cadastral_layer_filename.text(), 'Cadastral Map',
'ogr')
slope_layer = self.iface.addRasterLayer(
self.dlg.slope_layer_filename.text(), 'Slope')
if self.dlg.drainage_layer_filename.text() != '':
drainage_layer = self.iface.addRasterLayer(
self.dlg.drainage_layer_filename.text(), 'Drainage', 'ogr')
rainfall_csv = self.dlg.rainfall_csv_filename.text()
sowing_threshold = self.dlg.sowing_threshold.value()
monsoon_end_date_index = self.dlg.monsoon_end.value() + 123
crop = self.dlg.crop_combo_box.currentText()
interval_points = [
int(
self.dlg.colour_code_intervals_list_widget.item(
i).text().split('-')[0])
for i in range(
1, self.dlg.colour_code_intervals_list_widget.count())
]
#~ print path, zones_layer, soil_layer, lulc_layer, cadastral_layer, slope_layer, drainage_layer, rainfall_csv
#~ start_qdate = self.dlg.from_date_edit.date()
#~ date_with_index_0 = QDate(start_qdate.year(), 6, 1).dayOfYear()
#~ start_date_index = start_qdate.dayOfYear() - date_with_index_0
#~ end_qdate = self.dlg.to_date_edit.date()
#~ end_date_index = end_qdate.dayOfYear() - date_with_index_0
pointwise_output_csv_filename = '/kharif_model_pointwise_output.csv'
zonewise_budget_csv_filename = '/kharif_model_zonewise_budget.csv'
zonewise_budget_csv_filename_LU = '/kharif_model_zonewise_LU_budget.csv'
zonewise_budget_areawise_csv_filename = '/kharif_model_zonewise_budget_area.csv'
cadastral_vulnerability_csv_filename = '/kharif_model_cadastral_vulnerability.csv'
model_calculator = KharifModelCalculator(path, zones_layer, soil_layer,
lulc_layer, cadastral_layer,
slope_layer, rainfall_csv)
model_calculator.calculate(crop, pointwise_output_csv_filename,
zonewise_budget_csv_filename,
zonewise_budget_csv_filename_LU,
zonewise_budget_areawise_csv_filename,
cadastral_vulnerability_csv_filename,
sowing_threshold, monsoon_end_date_index)
uri = 'file:///' + path + pointwise_output_csv_filename + '?delimiter=%s&crs=epsg:32643&xField=%s&yField=%s' % (
',', 'X', 'Y')
kharif_model_output_layer = QgsVectorLayer(uri, 'Kharif Model Output',
'delimitedtext')
graduated_symbol_renderer_range_list = []
ET_D_max = max([
point.budget.PET_minus_AET_crop_end
for point in model_calculator.output_grid_points
])
opacity = 1
intervals_count = self.dlg.colour_code_intervals_list_widget.count()
for i in range(intervals_count):
percent_interval_start_text, percent_interval_end_text = self.dlg.colour_code_intervals_list_widget.item(
i).text().split('-')
interval_min = 0 if percent_interval_start_text == '0' else (
int(percent_interval_start_text) * ET_D_max / 100.0 + 0.01)
interval_max = (int(percent_interval_end_text) * ET_D_max / 100.0)
label = "{0:.2f} - {1:.2f}".format(interval_min, interval_max)
colour = QColor(
int(255 * (1 - (i + 1.0) / (intervals_count + 1.0))), 0,
0) # +1 done to tackle boundary cases
symbol = QgsSymbolV2.defaultSymbol(
kharif_model_output_layer.geometryType())
symbol.setColor(colour)
symbol.setAlpha(opacity)
interval_range = QgsRendererRangeV2(interval_min, interval_max,
symbol, label)
graduated_symbol_renderer_range_list.append(interval_range)
renderer = QgsGraduatedSymbolRendererV2(
'', graduated_symbol_renderer_range_list)
renderer.setMode(QgsGraduatedSymbolRendererV2.EqualInterval)
renderer.setClassAttribute('Crop duration PET-AET')
kharif_model_output_layer.setRendererV2(renderer)
QgsMapLayerRegistry.instance().addMapLayer(kharif_model_output_layer)
QgsVectorFileWriter.writeAsVectorFormat(
kharif_model_output_layer, path + '/kharif_et_deficit.shp',
"utf-8", None, "ESRI Shapefile")
#Dislpaying for long kharif crops
if (crop in long_kharif_crops):
kharif_model_monsoon_end_output_layer = QgsVectorLayer(
uri, 'Kharif Model Monsoon End Output', 'delimitedtext')
graduated_symbol_renderer_range_list = []
ET_D_max = max([
point.budget.PET_minus_AET_monsoon_end
for point in model_calculator.output_grid_points
])
opacity = 1
intervals_count = self.dlg.colour_code_intervals_list_widget.count(
)
geometry_type = kharif_model_monsoon_end_output_layer.geometryType(
)
for i in range(intervals_count):
percent_interval_start_text, percent_interval_end_text = self.dlg.colour_code_intervals_list_widget.item(
i).text().split('-')
interval_min = 0 if percent_interval_start_text == '0' else (
int(percent_interval_start_text) * ET_D_max / 100.0 + 0.01)
interval_max = (int(percent_interval_end_text) * ET_D_max /
100.0)
label = "{0:.2f} - {1:.2f}".format(interval_min, interval_max)
colour = QColor(
int(255 * (1 - (i + 1.0) / (intervals_count + 1.0))), 0,
0) # +1 done to tackle boundary cases
symbol = QgsSymbolV2.defaultSymbol(geometry_type)
symbol.setColor(colour)
symbol.setAlpha(opacity)
interval_range = QgsRendererRangeV2(interval_min, interval_max,
symbol, label)
graduated_symbol_renderer_range_list.append(interval_range)
renderer = QgsGraduatedSymbolRendererV2(
'', graduated_symbol_renderer_range_list)
renderer.setMode(QgsGraduatedSymbolRendererV2.EqualInterval)
renderer.setClassAttribute('Monsoon PET-AET')
kharif_model_monsoon_end_output_layer.setRendererV2(renderer)
QgsMapLayerRegistry.instance().addMapLayer(
kharif_model_monsoon_end_output_layer)
QgsVectorFileWriter.writeAsVectorFormat(
kharif_model_monsoon_end_output_layer,
path + '/kharif_post_monsoon_et_deficit.shp', "utf-8", None,
"ESRI Shapefile")
self.iface.actionHideAllLayers().trigger()
self.iface.legendInterface().setLayerVisible(zones_layer, True)
if 'drainage_layer' in locals():
self.iface.legendInterface().setLayerVisible(drainage_layer, True)
if (crop in long_kharif_crops):
self.iface.legendInterface().setLayerVisible(
kharif_model_monsoon_end_output_layer, True)
self.iface.legendInterface().setLayerVisible(kharif_model_output_layer,
True)
self.iface.mapCanvas().setExtent(zones_layer.extent())
self.iface.mapCanvas().mapRenderer().setDestinationCrs(
zones_layer.crs())
self.iface.mapCanvas().refresh()
if self.dlg.save_image_group_box.isChecked():
QTimer.singleShot(
1000, lambda: self.iface.mapCanvas().saveAsImage(
self.dlg.save_image_filename.text()))