mirror of
https://github.com/qgis/QGIS.git
synced 2025-02-28 00:17:30 -05:00
148 lines
5.8 KiB
Python
148 lines
5.8 KiB
Python
# -*- coding: utf-8 -*-
|
|
|
|
"""
|
|
***************************************************************************
|
|
PointsToPaths.py
|
|
---------------------
|
|
Date : April 2014
|
|
Copyright : (C) 2014 by Alexander Bruy
|
|
Email : alexander dot bruy at gmail dot com
|
|
***************************************************************************
|
|
* *
|
|
* 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. *
|
|
* *
|
|
***************************************************************************
|
|
"""
|
|
from builtins import str
|
|
|
|
__author__ = 'Alexander Bruy'
|
|
__date__ = 'April 2014'
|
|
__copyright__ = '(C) 2014, Alexander Bruy'
|
|
|
|
# This will get replaced with a git SHA1 when you do a git archive
|
|
|
|
__revision__ = '$Format:%H$'
|
|
|
|
import os
|
|
from datetime import datetime
|
|
|
|
from qgis.PyQt.QtCore import QVariant
|
|
from qgis.core import Qgis, QgsFeature, QgsFields, QgsField, QgsGeometry, QgsDistanceArea, QgsWkbTypes
|
|
|
|
from processing.core.GeoAlgorithm import GeoAlgorithm
|
|
from processing.core.parameters import ParameterVector
|
|
from processing.core.parameters import ParameterTableField
|
|
from processing.core.parameters import ParameterString
|
|
from processing.core.outputs import OutputVector
|
|
from processing.core.outputs import OutputDirectory
|
|
from processing.tools import dataobjects, vector
|
|
|
|
|
|
class PointsToPaths(GeoAlgorithm):
|
|
|
|
VECTOR = 'VECTOR'
|
|
GROUP_FIELD = 'GROUP_FIELD'
|
|
ORDER_FIELD = 'ORDER_FIELD'
|
|
DATE_FORMAT = 'DATE_FORMAT'
|
|
#GAP_PERIOD = 'GAP_PERIOD'
|
|
OUTPUT_LINES = 'OUTPUT_LINES'
|
|
OUTPUT_TEXT = 'OUTPUT_TEXT'
|
|
|
|
def defineCharacteristics(self):
|
|
self.name, self.i18n_name = self.trAlgorithm('Points to path')
|
|
self.group, self.i18n_group = self.trAlgorithm('Vector creation tools')
|
|
self.addParameter(ParameterVector(self.VECTOR,
|
|
self.tr('Input point layer'), [dataobjects.TYPE_VECTOR_POINT]))
|
|
self.addParameter(ParameterTableField(self.GROUP_FIELD,
|
|
self.tr('Group field'), self.VECTOR))
|
|
self.addParameter(ParameterTableField(self.ORDER_FIELD,
|
|
self.tr('Order field'), self.VECTOR))
|
|
self.addParameter(ParameterString(self.DATE_FORMAT,
|
|
self.tr('Date format (if order field is DateTime)'), '', optional=True))
|
|
#self.addParameter(ParameterNumber(
|
|
# self.GAP_PERIOD,
|
|
# 'Gap period (if order field is DateTime)', 0, 60, 0))
|
|
self.addOutput(OutputVector(self.OUTPUT_LINES, self.tr('Paths'), datatype=[dataobjects.TYPE_VECTOR_LINE]))
|
|
self.addOutput(OutputDirectory(self.OUTPUT_TEXT, self.tr('Directory')))
|
|
|
|
def processAlgorithm(self, progress):
|
|
layer = dataobjects.getObjectFromUri(
|
|
self.getParameterValue(self.VECTOR))
|
|
groupField = self.getParameterValue(self.GROUP_FIELD)
|
|
orderField = self.getParameterValue(self.ORDER_FIELD)
|
|
dateFormat = str(self.getParameterValue(self.DATE_FORMAT))
|
|
#gap = int(self.getParameterValue(self.GAP_PERIOD))
|
|
dirName = self.getOutputValue(self.OUTPUT_TEXT)
|
|
|
|
fields = QgsFields()
|
|
fields.append(QgsField('group', QVariant.String, '', 254, 0))
|
|
fields.append(QgsField('begin', QVariant.String, '', 254, 0))
|
|
fields.append(QgsField('end', QVariant.String, '', 254, 0))
|
|
writer = self.getOutputFromName(self.OUTPUT_LINES).getVectorWriter(
|
|
fields, QgsWkbTypes.LineString, layer.crs())
|
|
|
|
points = dict()
|
|
features = vector.features(layer)
|
|
total = 100.0 / len(features)
|
|
for current, f in enumerate(features):
|
|
point = f.geometry().asPoint()
|
|
group = f[groupField]
|
|
order = f[orderField]
|
|
if dateFormat != '':
|
|
order = datetime.strptime(str(order), dateFormat)
|
|
if group in points:
|
|
points[group].append((order, point))
|
|
else:
|
|
points[group] = [(order, point)]
|
|
|
|
progress.setPercentage(int(current * total))
|
|
|
|
progress.setPercentage(0)
|
|
|
|
da = QgsDistanceArea()
|
|
|
|
current = 0
|
|
total = 100.0 / len(points)
|
|
for group, vertices in points.items():
|
|
vertices.sort()
|
|
f = QgsFeature()
|
|
f.initAttributes(len(fields))
|
|
f.setFields(fields)
|
|
f['group'] = group
|
|
f['begin'] = vertices[0][0]
|
|
f['end'] = vertices[-1][0]
|
|
|
|
fileName = os.path.join(dirName, '%s.txt' % group)
|
|
|
|
fl = open(fileName, 'w')
|
|
fl.write('angle=Azimuth\n')
|
|
fl.write('heading=Coordinate_System\n')
|
|
fl.write('dist_units=Default\n')
|
|
|
|
line = []
|
|
i = 0
|
|
for node in vertices:
|
|
line.append(node[1])
|
|
|
|
if i == 0:
|
|
fl.write('startAt=%f;%f;90\n' % (node[1].x(), node[1].y()))
|
|
fl.write('survey=Polygonal\n')
|
|
fl.write('[data]\n')
|
|
else:
|
|
angle = line[i - 1].azimuth(line[i])
|
|
distance = da.measureLine(line[i - 1], line[i])
|
|
fl.write('%f;%f;90\n' % (angle, distance))
|
|
|
|
i += 1
|
|
|
|
f.setGeometry(QgsGeometry.fromPolyline(line))
|
|
writer.addFeature(f)
|
|
current += 1
|
|
progress.setPercentage(int(current * total))
|
|
|
|
del writer
|
|
fl.close()
|