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osrm_dialog.py
executable file
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osrm_dialog.py
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# -*- coding: utf-8 -*-
"""
/***************************************************************************
OSRMDialog
A QGIS plugin
Find a route with OSRM
-------------------
begin : 2015-09-29
git sha : $Format:%H$
copyright : (C) 2015 by mthh
email : matthieu.viry@cnrs.fr
***************************************************************************/
/***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
"""
import os
import csv
import sys
import numpy as np
from PyQt4 import QtGui, uic
#from PyQt4.QtCore import Qt, QPointF, QThreadPool, QEventLoop
from re import match
from codecs import open as codecs_open
from multiprocessing.pool import ThreadPool
from qgis.gui import QgsMapLayerProxyModel, QgsMapToolEmitPoint
from qgis.core import (
QgsMessageLog, QgsCoordinateTransform, QgsFeature,
QgsCoordinateReferenceSystem, QgsMapLayerRegistry,
QgsVectorLayer, QgsVectorFileWriter, QgsPoint,
QgsGeometry, QgsRuleBasedRendererV2, QgsSymbolV2,
QgsGraduatedSymbolRendererV2, QgsRendererRangeV2, QgsFillSymbolV2,
QgsSingleSymbolRendererV2, QgsPalLayerSettings
)
from osrm_utils import *
#from osrm_utils_extern import lru_cache
#from time import time as t_time
FORM_CLASS, _ = uic.loadUiType(os.path.join(
os.path.dirname(__file__), 'ui/osrm_dialog_base.ui'))
FORM_CLASS_t, _ = uic.loadUiType(os.path.join(
os.path.dirname(__file__), 'ui/osrm_table_dialog_base.ui'))
FORM_CLASS_a, _ = uic.loadUiType(os.path.join(
os.path.dirname(__file__), 'ui/osrm_access_dialog_base.ui'))
FORM_CLASS_b, _ = uic.loadUiType(os.path.join(
os.path.dirname(__file__), 'ui/osrm_batch_route.ui'))
FORM_CLASS_tsp, _ = uic.loadUiType(os.path.join(
os.path.dirname(__file__), 'ui/osrm_dialog_tsp.ui'))
class OSRM_DialogTSP(QtGui.QDialog, FORM_CLASS_tsp, TemplateOsrm):
def __init__(self, iface, parent=None):
""" Constructor"""
super(OSRM_DialogTSP, self).__init__(parent)
self.setupUi(self)
self.iface = iface
self.pushButton_display.clicked.connect(self.run_tsp)
self.pushButton_clear.clicked.connect(self.clear_results)
self.comboBox_layer.setFilters(QgsMapLayerProxyModel.PointLayer)
self.nb_route = 0
def clear_results(self):
"""
Clear previous result and set back counter to 0.
"""
for layer in QgsMapLayerRegistry.instance().mapLayers():
if 'tsp_solution_osrm' in layer:
QgsMapLayerRegistry.instance().removeMapLayer(layer)
self.nb_route = 0
def run_tsp(self):
"""
Main method, preparing the query and displaying the result on
the canvas.
"""
layer = self.comboBox_layer.currentLayer()
coords, _ = get_coords_ids(
layer, '', on_selected=self.checkBox_selec_features.isChecked())
if len(coords) < 2:
return -1
try:
self.host = check_host(self.lineEdit_host.text())
profile = check_profile_name(self.lineEdit_profileName.text())
except (ValueError, AssertionError) as err:
print(err)
self.iface.messageBar().pushMessage(
"Error",
"Please provide a valid non-empty URL and profile name",
duration=10)
return
query = ''.join(
["http://", self.host,
"/trip/", profile, "/",
";".join(["{},{}".format(c[0], c[1]) for c in coords])])
try:
self.parsed = self.query_url(query)
except Exception as err:
self.iface.messageBar().pushMessage(
"Error", "An error occured when trying to contact the OSRM "
"instance (see QGis log for error traceback)",
duration=10)
QgsMessageLog.logMessage(
'OSRM-plugin error report :\n {}'.format(err),
level=QgsMessageLog.WARNING)
return
try:
line_geoms = \
[decode_geom(self.parsed['trips'][i]['geometry'])
for i in range(len(self.parsed['trips']))]
except KeyError:
self.iface.messageBar().pushMessage(
"Error",
"?...",
duration=5)
return
tsp_route_layer = QgsVectorLayer(
"Linestring?crs=epsg:4326&field=id:integer"
"&field=total_time:integer(20)&field=distance:integer(20)",
"tsp_solution_osrm{}".format(self.nb_route), "memory")
my_symb = prepare_route_symbol(self.nb_route)
tsp_route_layer.setRendererV2(QgsSingleSymbolRendererV2(my_symb))
features = []
for idx, feature in enumerate(self.parsed['trips']):
ft = QgsFeature()
ft.setGeometry(line_geoms[idx])
ft.setAttributes([idx,
feature['distance'],
feature['duration']])
features.append(ft)
self.prepare_ordered_marker(coords, idx)
tsp_route_layer.dataProvider().addFeatures(features)
tsp_route_layer.updateExtents()
QgsMapLayerRegistry.instance().addMapLayer(tsp_route_layer)
self.iface.setActiveLayer(tsp_route_layer)
self.iface.zoomToActiveLayer()
put_on_top(self.tsp_marker_lr.id(), tsp_route_layer.id())
self.nb_route += 1
# if self.checkBox_instructions.isChecked():
# pr_instruct, instruct_layer = self.prep_instruction()
# QgsMapLayerRegistry.instance().addMapLayer(instruct_layer)
# self.iface.setActiveLayer(instruct_layer)
def prepare_ordered_marker(self, coords, idx):
"""
Try to display nice marker on a point layer, showing the order of
the path computed by OSRM.
"""
self.tsp_marker_lr = QgsVectorLayer(
"Point?crs=epsg:4326&field=id:integer"
"&field=TSP_nb:integer(20)&field=Origin_nb:integer(20)",
"tsp_markers_osrm{}".format(self.nb_route), "memory")
symbol = QgsSymbolV2.defaultSymbol(self.tsp_marker_lr.geometryType())
symbol.setSize(4.5)
symbol.setColor(QtGui.QColor("yellow"))
ordered_pts = \
[coords[i["waypoint_index"]] for i in self.parsed['waypoints']]
print("ordered_pts : ", ordered_pts)
features = []
for nb, pt in enumerate(ordered_pts):
ft = QgsFeature()
ft.setGeometry(QgsGeometry.fromPoint(QgsPoint(pt)))
ft.setAttributes([nb, nb + 1, coords.index(pt)])
features.append(ft)
self.tsp_marker_lr.dataProvider().addFeatures(features)
pal_lyr = QgsPalLayerSettings()
pal_lyr.readFromLayer(self.tsp_marker_lr)
pal_lyr.enabled = True
pal_lyr.fieldName = 'TSP_nb'
pal_lyr.placement = QgsPalLayerSettings.OverPoint
pal_lyr.setDataDefinedProperty(
QgsPalLayerSettings.Size, True, True, '12', '')
pal_lyr.writeToLayer(self.tsp_marker_lr)
self.tsp_marker_lr.setRendererV2(QgsSingleSymbolRendererV2(symbol))
QgsMapLayerRegistry.instance().addMapLayer(self.tsp_marker_lr)
class OSRMDialog(QtGui.QDialog, FORM_CLASS, TemplateOsrm):
def __init__(self, iface, parent=None):
"""Constructor."""
super(OSRMDialog, self).__init__(parent)
self.setupUi(self)
self.iface = iface
self.canvas = iface.mapCanvas()
self.originEmit = QgsMapToolEmitPoint(self.canvas)
self.intermediateEmit = QgsMapToolEmitPoint(self.canvas)
self.destinationEmit = QgsMapToolEmitPoint(self.canvas)
self.nb_route = 0
self.intermediate = []
self.pushButtonTryIt.clicked.connect(self.get_route)
self.pushButtonReverse.clicked.connect(self.reverse_OD)
self.pushButtonClear.clicked.connect(self.clear_all_single)
def store_intermediate(self, point):
if '4326' not in self.canvas.mapSettings().destinationCrs().authid():
crsSrc = self.canvas.mapSettings().destinationCrs()
xform = QgsCoordinateTransform(
crsSrc, QgsCoordinateReferenceSystem(4326))
point = xform.transform(point)
self.intermediate.append(tuple(map(lambda x: round(x, 6), point)))
self.canvas.unsetMapTool(self.intermediateEmit)
self.lineEdit_xyI.setText(str(self.intermediate)[1:-1])
def store_destination(self, point):
if '4326' not in self.canvas.mapSettings().destinationCrs().authid():
crsSrc = self.canvas.mapSettings().destinationCrs()
xform = QgsCoordinateTransform(
crsSrc, QgsCoordinateReferenceSystem(4326))
point = xform.transform(point)
self.destination = point
self.canvas.unsetMapTool(self.destinationEmit)
self.lineEdit_xyD.setText(str(point))
def get_alternatives(self, provider):
"""
Fetch the geometry of alternatives roads if requested
"""
for i, alt_geom in enumerate(self.parsed['routes'][1:]):
decoded_alt_line = decode_geom(alt_geom["geometry"])
fet = QgsFeature()
fet.setGeometry(decoded_alt_line)
fet.setAttributes([
i + 1,
alt_geom["duration"],
alt_geom["distance"]
])
provider.addFeatures([fet])
def reverse_OD(self):
try:
tmp = self.lineEdit_xyO.text()
tmp1 = self.lineEdit_xyD.text()
self.lineEdit_xyD.setText(str(tmp))
self.lineEdit_xyO.setText(str(tmp1))
except Exception as err:
print(err)
def clear_all_single(self):
self.lineEdit_xyO.setText('')
self.lineEdit_xyD.setText('')
self.lineEdit_xyI.setText('')
self.intermediate = []
for layer in QgsMapLayerRegistry.instance().mapLayers():
if 'route_osrm' in layer or 'markers_osrm' in layer:
# or 'instruction_osrm' in layer \
QgsMapLayerRegistry.instance().removeMapLayer(layer)
self.nb_route = 0
# def prep_instruction(self, alt=None, provider=None,
# osrm_instruction_layer=None):
# """
# Prepare the instruction layer, each field corresponding to an OSRM
# viaroute response field.
# """
# if not alt:
# osrm_instruction_layer = QgsVectorLayer(
# "Point?crs=epsg:4326&field=id:integer&field=alt:integer"
# "&field=directions:integer(20)&field=street_name:string(254)"
# "&field=length:integer(20)&field=position:integer(20)"
# "&field=time:integer(20)&field=length:string(80)"
# "&field=direction:string(20)&field=azimuth:float(10,4)",
# "instruction_osrm{}".format(self.nb_route),
# "memory")
# liste_coords = decode_geom_to_pts(self.parsed['route_geometry'])
# pts_instruct = pts_ref(self.parsed['route_instructions'])
# instruct = self.parsed['route_instructions']
# provider = osrm_instruction_layer.dataProvider()
# else:
# liste_coords = decode_geom_to_pts(
# self.parsed['alternative_geometries'][alt - 1])
# pts_instruct = pts_ref(
# self.parsed['alternative_instructions'][alt - 1])
# instruct = self.parsed['alternative_instructions'][alt - 1]
#
# for nbi, pt in enumerate(pts_instruct):
# fet = QgsFeature()
# fet.setGeometry(
# QgsGeometry.fromPoint(
# QgsPoint(liste_coords[pt][0], liste_coords[pt][1])))
# fet.setAttributes([nbi, alt, instruct[nbi][0],
# instruct[nbi][1], instruct[nbi][2],
# instruct[nbi][3], instruct[nbi][4],
# instruct[nbi][5], instruct[nbi][6],
# instruct[nbi][7]])
# provider.addFeatures([fet])
# return provider, osrm_instruction_layer
@staticmethod
def make_OD_markers(nb, xo, yo, xd, yd, list_coords=None):
"""
Prepare the Origin (green), Destination (red) and Intermediates (grey)
markers.
"""
OD_layer = QgsVectorLayer(
"Point?crs=epsg:4326&field=id_route:integer&field=role:string(80)",
"markers_osrm{}".format(nb), "memory")
features = []
fet = QgsFeature()
fet.setGeometry(QgsGeometry.fromPoint(QgsPoint(float(xo), float(yo))))
fet.setAttributes([nb, 'Origin'])
features.append(fet)
fet = QgsFeature()
fet.setGeometry(QgsGeometry.fromPoint(QgsPoint(float(xd), float(yd))))
fet.setAttributes([nb, 'Destination'])
features.append(fet)
marker_rules = [
('Origin', '"role" LIKE \'Origin\'', '#50b56d', 4),
('Destination', '"role" LIKE \'Destination\'', '#d31115', 4),
]
if list_coords:
for i, pt in enumerate(list_coords):
fet = QgsFeature()
fet.setGeometry(
QgsGeometry.fromPoint(QgsPoint(float(pt[0]), float(pt[1])))
)
fet.setAttributes([nb, 'Via point n°{}'.format(i)])
features.append(fet)
marker_rules.insert(
1, ('Intermediate', '"role" LIKE \'Via point%\'', 'grey', 2))
OD_layer.dataProvider().addFeatures(features)
symbol = QgsSymbolV2.defaultSymbol(OD_layer.geometryType())
renderer = QgsRuleBasedRendererV2(symbol)
root_rule = renderer.rootRule()
for label, expression, color_name, size in marker_rules:
rule = root_rule.children()[0].clone()
rule.setLabel(label)
rule.setFilterExpression(expression)
rule.symbol().setColor(QtGui.QColor(color_name))
rule.symbol().setSize(size)
root_rule.appendChild(rule)
root_rule.removeChildAt(0)
OD_layer.setRendererV2(renderer)
return OD_layer
def get_route(self):
"""
Main method to prepare the request and display the result on the
QGIS canvas.
"""
try:
self.host = check_host(self.lineEdit_host.text())
profile = check_profile_name(self.lineEdit_profileName.text())
except (ValueError, AssertionError) as err:
print(err)
self.iface.messageBar().pushMessage(
"Error",
"Please provide a valid non-empty URL and profile name",
duration=10)
return
origin = self.lineEdit_xyO.text()
interm = self.lineEdit_xyI.text()
destination = self.lineEdit_xyD.text()
try:
assert match('^[^a-zA-Z]+$', origin) \
and 46 > len(origin) > 4
assert match('^[^a-zA-Z]+$', destination) \
and 46 > len(destination) > 4
xo, yo = eval(origin)
xd, yd = eval(destination)
except:
self.iface.messageBar().pushMessage(
"Error", "Invalid coordinates !", duration=10)
return -1
if interm:
try:
assert match('^[^a-zA-Z]+$', interm) \
and 150 > len(interm) > 4
interm = eval(''.join(['[', interm, ']']))
tmp = ';'.join(
['{},{}'.format(xi, yi) for xi, yi in interm])
url = ''.join([
"http://", self.host, "/route/", profile, "/",
"{},{};".format(xo, yo), tmp, ";{},{}".format(xd, yd),
"?overview=full&alternatives={}".format(
str(self.checkBox_alternative.isChecked()).lower())])
except:
self.iface.messageBar().pushMessage(
"Error", "Invalid intemediates coordinates", duration=10)
else:
url = ''.join([
"http://", self.host, "/route/", profile, "/",
"polyline(", encode_to_polyline([(yo, xo), (yd, xd)]), ")",
"?overview=full&alternatives={}"
.format(str(self.checkBox_alternative.isChecked()).lower())])
try:
self.parsed = self.query_url(url)
assert "code" in self.parsed
except Exception as err:
self.display_error(err, 1)
return
if 'Ok' not in self.parsed['code']:
self.display_error(self.parsed['code'], 1)
return
try:
enc_line = self.parsed['routes'][0]["geometry"]
line_geom = decode_geom(enc_line)
except KeyError:
self.iface.messageBar().pushMessage(
"Error",
"No route found between {} and {}".format(origin, destination),
duration=5)
return
self.nb_route += 1
osrm_route_layer = QgsVectorLayer(
"Linestring?crs=epsg:4326&field=id:integer"
"&field=total_time:integer(20)&field=distance:integer(20)",
"route_osrm{}".format(self.nb_route), "memory")
my_symb = prepare_route_symbol(self.nb_route)
osrm_route_layer.setRendererV2(QgsSingleSymbolRendererV2(my_symb))
provider = osrm_route_layer.dataProvider()
fet = QgsFeature()
fet.setGeometry(line_geom)
fet.setAttributes([0, self.parsed['routes'][0]['duration'],
self.parsed['routes'][0]['distance']])
provider.addFeatures([fet])
OD_layer = self.make_OD_markers(self.nb_route, xo, yo, xd, yd, interm)
QgsMapLayerRegistry.instance().addMapLayer(OD_layer)
osrm_route_layer.updateExtents()
QgsMapLayerRegistry.instance().addMapLayer(osrm_route_layer)
self.iface.setActiveLayer(osrm_route_layer)
self.iface.zoomToActiveLayer()
put_on_top(OD_layer.id(), osrm_route_layer.id())
# if self.checkBox_instruction.isChecked():
# pr_instruct, instruct_layer = self.prep_instruction()
# QgsMapLayerRegistry.instance().addMapLayer(instruct_layer)
# self.iface.setActiveLayer(instruct_layer)
if self.checkBox_alternative.isChecked() \
and 'alternative_geometries' in self.parsed:
self.nb_alternative = len(self.parsed['routes'] - 1)
self.get_alternatives(provider)
# if self.dlg.checkBox_instruction.isChecked():
# for i in range(self.nb_alternative):
# pr_instruct, instruct_layer = \
# self.prep_instruction(
# i + 1, pr_instruct, instruct_layer)
return
class OSRM_table_Dialog(QtGui.QDialog, FORM_CLASS_t, TemplateOsrm):
def __init__(self, iface, parent=None):
"""Constructor."""
super(OSRM_table_Dialog, self).__init__(parent)
self.setupUi(self)
self.iface = iface
self.encoding = "System"
self.pushButton_fetch.setDisabled(True)
self.comboBox_layer.setFilters(QgsMapLayerProxyModel.PointLayer)
self.comboBox_layer.layerChanged.connect(
lambda x: self.comboBox_idfield.setLayer(x)
)
self.lineEdit_output.textChanged.connect(
lambda x: self.pushButton_fetch.setEnabled(True)
if '.csv' in x else self.pushButton_fetch.setDisabled(True)
)
self.comboBox_layer_2.setFilters(QgsMapLayerProxyModel.PointLayer)
self.comboBox_layer_2.layerChanged.connect(
lambda x: self.comboBox_idfield_2.setLayer(x)
)
self.pushButton_browse.clicked.connect(self.output_dialog)
self.pushButton_fetch.clicked.connect(self.get_table)
def output_dialog(self):
self.lineEdit_output.clear()
self.filename, self.encoding = save_dialog()
if self.filename is None:
return
self.lineEdit_output.setText(self.filename)
def get_table(self):
"""
Main method to prepare the query and fecth the table to a .csv file
"""
try:
self.host = check_host(self.lineEdit_host.text())
profile = check_profile_name(self.lineEdit_profileName.text())
except:
self.iface.messageBar().pushMessage(
"Error", "Please provide valid non-empty URL and profile name",
duration=10)
return
self.filename = self.lineEdit_output.text()
s_layer = self.comboBox_layer.currentLayer()
d_layer = self.comboBox_layer_2.currentLayer() \
if self.comboBox_layer_2.currentLayer() != s_layer else None
coords_src, ids_src = \
get_coords_ids(s_layer, self.comboBox_idfield.currentField())
coords_dest, ids_dest = \
get_coords_ids(d_layer, self.comboBox_idfield_2.currentField()) \
if d_layer else (None, None)
url = ''.join(["http://", self.host, '/table/', profile, '/'])
try:
table, new_src_coords, new_dest_coords = \
fetch_table(url, coords_src, coords_dest)
except ValueError as err:
print(err)
self.display_error(err, 1)
return
except Exception as er:
print(er)
self.display_error(er, 1)
return
# Convert the matrix in minutes if needed :
if self.checkBox_minutes.isChecked():
table = (table / 60.0).round(2)
# Replace the value corresponding to a not-found connection :
if self.checkBox_empty_val.isChecked():
if self.checkBox_minutes.isChecked():
table[table == 3579139.4] = np.NaN
else:
table[table == 2147483647] = np.NaN
# Fetch the default encoding if selected :
if self.encoding == "System":
self.encoding = sys.getdefaultencoding()
# Write the result in csv :
try:
out_file = codecs_open(self.filename, 'w', encoding=self.encoding)
writer = csv.writer(out_file, lineterminator='\n')
if self.checkBox_flatten.isChecked():
table = table.ravel()
if d_layer:
idsx = [(i, j) for i in ids_src for j in ids_dest]
else:
idsx = [(i, j) for i in ids_src for j in ids_src]
writer.writerow([u'Origin', u'Destination', u'Time'])
writer.writerows([
[idsx[i][0], idsx[i][1], table[i]]
for i in xrange(len(idsx))
])
else:
if d_layer:
writer.writerow([u''] + ids_dest)
writer.writerows(
[[ids_src[_id]] + line
for _id, line in enumerate(table.tolist())])
else:
writer.writerow([u''] + ids_src)
writer.writerows(
[[ids_src[_id]] + line
for _id, line in enumerate(table.tolist())])
out_file.close()
QtGui.QMessageBox.information(
self.iface.mainWindow(), 'Done',
"OSRM table saved in {}".format(self.filename))
except Exception as err:
print(err)
QtGui.QMessageBox.information(
self.iface.mainWindow(), 'Error',
"Something went wrong...(See Qgis log for traceback)")
QgsMessageLog.logMessage(
'OSRM-plugin error report :\n {}'.format(err),
level=QgsMessageLog.WARNING)
class OSRM_access_Dialog(QtGui.QDialog, FORM_CLASS_a, TemplateOsrm):
def __init__(self, iface, parent=None):
"""Constructor."""
super(OSRM_access_Dialog, self).__init__(parent)
self.setupUi(self)
self.iface = iface
self.canvas = iface.mapCanvas()
self.originEmit = QgsMapToolEmitPoint(self.canvas)
self.intermediateEmit = QgsMapToolEmitPoint(self.canvas)
self.comboBox_pointlayer.setFilters(QgsMapLayerProxyModel.PointLayer)
self.comboBox_method.activated[str].connect(self.enable_functionnality)
self.pushButton_fetch.clicked.connect(self.get_access_isochrones)
self.pushButtonClear.clicked.connect(self.clear_all_isochrone)
self.lineEdit_xyO.textChanged.connect(self.change_nb_center)
self.nb_isocr = 0
self.host = None
self.progress = None
def change_nb_center(self):
nb_center = self.lineEdit_xyO.text().count('(')
self.textBrowser_nb_centers.setHtml(
"""<p style=" margin-top:0px; margin-bottom:0px;"""
"""margin-left:0px; margin-right:0px; -qt-block-indent:0; """
"""text-indent:0px;"><span style=" font-style:italic;">"""
"""{} center(s) selected</span></p>""".format(nb_center))
def enable_functionnality(self, text):
functions = (
self.pushButtonOrigin.setEnabled,
self.lineEdit_xyO.setEnabled,
self.textBrowser_nb_centers.setEnabled,
self.toolButton_poly.setEnabled,
self.comboBox_pointlayer.setEnabled,
self.label_3.setEnabled,
self.checkBox_selectedFt.setEnabled,
self.pushButton_fetch.setEnabled
)
if 'clicking' in text:
values = (True, True, True, True, False, False, False, True)
elif 'selecting' in text:
values = (False, False, False, False, True, True, True, True)
elif 'method' in text:
values = (False, False, False, False, False, False, False, False)
else:
return
for func, bool_value in zip(functions, values):
func(bool_value)
def clear_all_isochrone(self):
"""
Clear previously done isochrone polygons and clear the coordinate field
"""
self.lineEdit_xyO.setText('')
self.nb_isocr = 0
for layer in QgsMapLayerRegistry.instance().mapLayers():
if 'isochrone_osrm' in layer or 'isochrone_center' in layer:
QgsMapLayerRegistry.instance().removeMapLayer(layer)
def store_intermediate_acces(self, point):
if '4326' not in self.canvas.mapSettings().destinationCrs().authid():
crsSrc = self.canvas.mapSettings().destinationCrs()
xform = QgsCoordinateTransform(
crsSrc, QgsCoordinateReferenceSystem(4326))
point = xform.transform(point)
tmp = self.lineEdit_xyO.text()
self.change_nb_center()
self.lineEdit_xyO.setText(', '.join([tmp, repr(point)]))
def get_points_from_canvas(self):
pts = self.lineEdit_xyO.text()
try:
assert match('^[^a-zA-Z]+$', pts) and len(pts) > 4
pts = eval(pts)
if len(pts) < 2:
raise ValueError
elif len(pts) == 2 and not isinstance(pts[0], tuple):
assert isinstance(pts[0], (int, float))
assert isinstance(pts[1], (int, float))
pts = [pts]
else:
assert all([isinstance(pt, tuple) for pt in pts])
assert all([isinstance(coord[0], (float, int)) &
isinstance(coord[1], (float, int))
for coord in pts])
return pts
except Exception as err:
print(err)
QtGui.QMessageBox.warning(
self.iface.mainWindow(), 'Error',
"Invalid coordinates selected!")
return None
def add_final_pts(self, pts):
center_pt_layer = QgsVectorLayer(
"Point?crs=epsg:4326&field=id_center:integer&field=role:string(80)",
"isochrone_center_{}".format(self.nb_isocr), "memory")
my_symb = QgsSymbolV2.defaultSymbol(0)
my_symb.setColor(QtGui.QColor("#e31a1c"))
my_symb.setSize(1.2)
center_pt_layer.setRendererV2(QgsSingleSymbolRendererV2(my_symb))
features = []
for nb, pt in enumerate(pts):
xo, yo = pt["point"]
fet = QgsFeature()
fet.setGeometry(QgsGeometry.fromPoint(
QgsPoint(float(xo), float(yo))))
fet.setAttributes([nb, 'Origin'])
features.append(fet)
center_pt_layer.dataProvider().addFeatures(features)
QgsMapLayerRegistry.instance().addMapLayer(center_pt_layer)
def get_access_isochrones(self):
"""
Making the accessibility isochrones in few steps:
- make a grid of points aroung the origin point,
- snap each point (using OSRM locate function) on the road network,
- get the time-distance between the origin point and each of these pts
(using OSRM table function),
- make an interpolation grid to extract polygons corresponding to the
desired time intervals (using matplotlib library),
- render the polygon.
"""
try:
self.host = check_host(self.lineEdit_host.text())
self.profile = check_profile_name(self.lineEdit_profileName.text())
except (ValueError, AssertionError) as err:
self.iface.messageBar().pushMessage(
"Error", "Please provide a valid non-empty URL", duration=10)
return
if 'clicking' in self.comboBox_method.currentText():
pts = self.get_points_from_canvas()
elif 'selecting' in self.comboBox_method.currentText():
layer = self.comboBox_pointlayer.currentLayer()
pts, _ = get_coords_ids(
layer, '', on_selected=self.checkBox_selectedFt.isChecked())
pts = tuple(pts)
if not pts:
return
max_time = self.spinBox_max.value()
interval_time = self.spinBox_intervall.value()
nb_inter = int(round(max_time / interval_time)) + 1
levels = tuple([nb for nb in xrange(0, int(
max_time + 1) + interval_time, interval_time)][:nb_inter])
self.make_prog_bar()
self.max_points = 1500 if len(pts) == 1 else 500
self.polygons = []
pts = [{"point": pt, "max": max_time, "levels": levels,
"host": self.host, "profile": self.profile,
"max_points": self.max_points}
for pt in pts]
pool = ThreadPool(processes=4 if len(pts) >= 4 else len(pts))
try:
self.polygons = [i for i in pool.map(prep_access, pts)]
except Exception as err:
self.display_error(err, 1)
return
if len(self.polygons) == 1:
self.polygons = self.polygons[0]
else:
self.polygons = np.array(self.polygons).transpose().tolist()
self.polygons = \
[QgsGeometry.unaryUnion(polys) for polys in self.polygons]
isochrone_layer = QgsVectorLayer(
"MultiPolygon?crs=epsg:4326&field=id:integer"
"&field=min:integer(10)"
"&field=max:integer(10)",
"isochrone_osrm_{}".format(self.nb_isocr), "memory")
data_provider = isochrone_layer.dataProvider()
# Add the features to the layer to display :
features = []
levels = levels[1:]
self.progress.setValue(8.5)
for i, poly in enumerate(self.polygons):
if not poly:
continue
ft = QgsFeature()
ft.setGeometry(poly)
ft.setAttributes(
[i, levels[i] - interval_time, levels[i]])
features.append(ft)
data_provider.addFeatures(features[::-1])
self.nb_isocr += 1
self.progress.setValue(9.5)
# Render the value :
renderer = self.prepare_renderer(
levels, interval_time, len(self.polygons))
isochrone_layer.setRendererV2(renderer)
isochrone_layer.setLayerTransparency(25)
self.iface.messageBar().clearWidgets()
QgsMapLayerRegistry.instance().addMapLayer(isochrone_layer)
self.add_final_pts(pts)
self.iface.setActiveLayer(isochrone_layer)
@staticmethod
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)
class OSRM_batch_route_Dialog(QtGui.QDialog, FORM_CLASS_b, TemplateOsrm):
def __init__(self, iface, parent=None):
"""Constructor."""
super(OSRM_batch_route_Dialog, self).__init__(parent)
self.setupUi(self)
self.iface = iface
self.ComboBoxOrigin.setFilters(QgsMapLayerProxyModel.PointLayer)
self.ComboBoxDestination.setFilters(QgsMapLayerProxyModel.PointLayer)
self.ComboBoxCsv.setFilters(QgsMapLayerProxyModel.NoGeometry)
self.pushButtonReverse.clicked.connect(self.reverse_OD_batch)
self.pushButtonBrowse.clicked.connect(self.output_dialog_geo)
self.pushButtonRun.clicked.connect(self.get_batch_route)
self.comboBox_method.activated[str].connect(self.enable_functionnality)
self.comboBox_host.activated[str].connect(self.add_host)
self.ComboBoxCsv.layerChanged.connect(self._set_layer_field_combo)
self.nb_done = 0
def add_host(self, text):
if "Add an url" in text:
pass
def _set_layer_field_combo(self, layer):
self.FieldOriginX.setLayer(layer)
self.FieldOriginY.setLayer(layer)
self.FieldDestinationX.setLayer(layer)
self.FieldDestinationY.setLayer(layer)
def output_dialog_geo(self):
self.lineEdit_output.clear()
self.filename, self.encoding = save_dialog_geo()
if self.filename is None:
return
self.lineEdit_output.setText(self.filename)
def enable_functionnality(self, text):
functions = (
self.ComboBoxOrigin.setEnabled, self.label_2.setEnabled,
self.ComboBoxDestination.setEnabled, self.label.setEnabled,
self.label_5.setEnabled, self.ComboBoxCsv.setEnabled,
self.FieldOriginX.setEnabled, self.FieldOriginY.setEnabled,
self.FieldDestinationX.setEnabled, self.label_6.setEnabled,
self.FieldDestinationY.setEnabled, self.label_7.setEnabled,
self.label_8.setEnabled, self.label_9.setEnabled
)
if 'layer' in text:
values = (True, True, True, True,
False, False, False, False, False,
False, False, False, False, False)
elif '.csv' in text:
values = (False, False, False, False,
True, True, True, True, True,
True, True, True, True, True)
elif 'method' in text:
values = (False, False, False, False,
False, False, False, False, False,
False, False, False, False, False)
else:
return
for func, bool_value in zip(functions, values):
func(bool_value)
def _prepare_queries(self):
"""Get the coordinates for each viaroute to query"""
if self.ComboBoxOrigin.isEnabled():
origin_layer = self.ComboBoxOrigin.currentLayer()
destination_layer = self.ComboBoxDestination.currentLayer()
if '4326' not in origin_layer.crs().authid():
xform = QgsCoordinateTransform(
origin_layer.crs(), QgsCoordinateReferenceSystem(4326))
origin_ids_coords = \
[(ft.id(), xform.transform(ft.geometry().asPoint()))
for ft in origin_layer.getFeatures()]
else:
origin_ids_coords = \
[(ft.id(), ft.geometry().asPoint())
for ft in origin_layer.getFeatures()]
if '4326' not in destination_layer.crs().authid():
xform = QgsCoordinateTransform(
origin_layer.crs(), QgsCoordinateReferenceSystem(4326))
destination_ids_coords = \
[(ft.id(), xform.transform(ft.geometry().asPoint()))
for ft in destination_layer.getFeatures()]
else:
destination_ids_coords = \
[(ft.id(), ft.geometry().asPoint())
for ft in destination_layer.getFeatures()]
if len(origin_ids_coords) * len(destination_ids_coords) > 100000:
QtGui.QMessageBox.information(
self.iface.mainWindow(), 'Info',
"Too many route to calculate, try with less than 100000")
return -1
return [(origin[1][1], origin[1][0], dest[1][1], dest[1][0])
for origin in origin_ids_coords
for dest in destination_ids_coords]
elif self.FieldOriginX.isEnabled(): # If the source file is a .csv :
layer = self.ComboBoxCsv.currentLayer()
xo_col = self.FieldOriginX.currentField()
yo_col = self.FieldOriginY.currentField()
xd_col = self.FieldDestinationX.currentField()
yd_col = self.FieldDestinationY.currentField()
return [(str(ft.attribute(yo_col)), str(ft.attribute(xo_col)),
str(ft.attribute(yd_col)), str(ft.attribute(xd_col)))
for ft in layer.getFeatures()]
return -1
def reverse_OD_batch(self):
"""Helper function to dispatch to the proper method"""
if self.FieldOriginX.isEnabled():
self.switch_OD_fields()
elif self.ComboBoxOrigin.isEnabled():
self.swtich_OD_box()
else:
self.switch_OD_fields()
self.swtich_OD_box()
def switch_OD_fields(self):
""" Switch the selected fields from the csv file"""
try:
oxf = self.FieldOriginX.currentField()
self.FieldOriginX.setField(
self.FieldDestinationX.currentField())
oyf = self.FieldOriginY.currentField()
self.FieldOriginY.setField(
self.FieldDestinationY.currentField())
self.FieldDestinationX.setField(oxf)
self.FieldDestinationY.setField(oyf)
except Exception as err:
QgsMessageLog.logMessage(
'OSRM-plugin error report :\n {}'.format(err),
level=QgsMessageLog.WARNING)
def swtich_OD_box(self):
""" Switch the Origin and the Destination layer"""
try:
tmp_o = self.ComboBoxOrigin.currentLayer()
tmp_d = self.ComboBoxDestination.currentLayer()
self.ComboBoxOrigin.setLayer(tmp_d)
self.ComboBoxDestination.setLayer(tmp_o)
except Exception as err:
QgsMessageLog.logMessage(
'OSRM-plugin error report :\n {}'.format(err),
level=QgsMessageLog.WARNING)
def get_batch_route(self):
#TODO: Deplacer le batch_route vers un Worker pour pas perdre le
# controle sur l'interface pendant le temps de calcul
"""Query the API and make a line for each route"""
self.filename = self.lineEdit_output.text()
if not self.check_add_layer.isChecked() \
and '.shp' not in self.filename:
QtGui.QMessageBox.information(
self.iface.mainWindow(), 'Error',
"Output have to be saved and/or added to the canvas")
return -1
try:
self.host = check_host(self.comboBox_host.currentText())
profile = check_profile_name(self.lineEdit_profileName.text())
except (ValueError, AssertionError) as err:
self.iface.messageBar().pushMessage(
"Error", "Please provide a valid non-empty URL", duration=10)
return
self.nb_route, errors, consec_errors = 0, 0, 0
queries = self._prepare_queries()
try:
nb_queries = len(queries)
except TypeError:
return -1
if nb_queries < 1:
QtGui.QMessageBox.information(
self.iface.mainWindow(), 'Info',
"Something wrong append - No locations to request"
.format(self.filename))
return -1
elif nb_queries > 20 and 'project-osrm' in self.host:
QtGui.QMessageBox.information(
self.iface.mainWindow(), 'Error',