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uwgprepare_algorithm.py
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# -*- coding: utf-8 -*-
"""
/***************************************************************************
ProcessingUMEP
A QGIS plugin
UMEP for processing toolbox
Generated by Plugin Builder: http://g-sherman.github.io/Qgis-Plugin-Builder/
-------------------
begin : 2020-04-02
copyright : (C) 2020 by Fredrik Lindberg
email : [email protected]
***************************************************************************/
/***************************************************************************
* *
* 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. *
* *
***************************************************************************/
"""
__author__ = 'Fredrik Lindberg'
__date__ = '2022-02-07'
__copyright__ = '(C) 2020 by Fredrik Lindberg'
# This will get replaced with a git SHA1 when you do a git archive
__revision__ = '$Format:%H$'
from qgis.PyQt.QtCore import QCoreApplication, QVariant
from qgis.core import (QgsProcessing,
QgsProcessingAlgorithm,
QgsProcessingParameterFile,
QgsProcessingParameterString,
QgsProcessingParameterNumber,
QgsProcessingParameterFolderDestination,
QgsProcessingParameterEnum,
QgsProcessingParameterFeatureSource,
QgsProcessingParameterField,
QgsProcessingException,
QgsVectorLayer)
from qgis.PyQt.QtGui import QIcon
from osgeo import gdal, osr, ogr
from osgeo.gdalconst import *
import os
import numpy as np
import inspect
from pathlib import Path
import sys
from ..util.umep_uwg_export_component import create_uwgdict, get_uwg_file
class ProcessingUWGPrepareAlgorithm(QgsProcessingAlgorithm):
"""
This algorithm is a processing version of UWG Prepare
"""
INPUT_POLYGONLAYER = 'INPUT_POLYGONLAYER'
ID_FIELD = 'ID_FIELD'
INPUT_POLYGONLAYERTYPOLOGY = 'INPUT_POLYGONLAYERTYPOLOGY'
INPUT_MORPH = 'INPUT_MORPH'
INPUT_LC = 'INPUT_LC'
INPUT_RURAL = 'INPUT_RURAL'
CLIMATEZONE = 'CLIMATEZONE'
FILE_PREFIX = 'FILE_PREFIX'
OUTPUT_DIR = 'OUTPUT_DIR'
def initAlgorithm(self, config):
self.addParameter(QgsProcessingParameterFeatureSource(self.INPUT_POLYGONLAYER,
self.tr('Vector polygon grid'), [QgsProcessing.TypeVectorPolygon]))
self.addParameter(QgsProcessingParameterField(self.ID_FIELD,
self.tr('ID field'),'', self.INPUT_POLYGONLAYER, QgsProcessingParameterField.Numeric))
self.addParameter(QgsProcessingParameterFeatureSource(self.INPUT_POLYGONLAYERTYPOLOGY,
self.tr('Building type polygon layer'), [QgsProcessing.TypeVectorPolygon], optional=True))
self.addParameter(QgsProcessingParameterFile(self.INPUT_MORPH,
self.tr('Building morphology file (.txt)'), extension='txt'))
self.addParameter(QgsProcessingParameterFile(self.INPUT_LC,
self.tr('Land cover file (.txt)'), extension='txt'))
self.zone = ((self.tr('1A; Very hot, humid; (Miami, FL)'), '0'),
(self.tr('1B; Hot, dry; '), '1'),
(self.tr('2A; Hot, Humid; (Huston, TX)'), '2'),
(self.tr('3A; Warm, Humid; (Atalanta, GA)'), '3'),
(self.tr('3B; Warm, Dry; (Las Vegas, NV)'), '4'),
(self.tr('3C; Warm, Marine; (San Francisco, CA)'), '5'),
(self.tr('4A; Mild, Humid; (Baltimore, MD)'), '6'),
(self.tr('4B; Mild, Dry; (Albuquerque, NM)'), '7'),
(self.tr('4C; Mild, Marine; (Seattle, WA)'), '8'),
(self.tr('5A; Cold, Humid; (Chicago, IL)'), '9'),
(self.tr('5B; Cold, Dry; (Boulder, CO)'), '10'),
(self.tr('5C; Cold, Marine;'), '11'),
(self.tr('6A; Cold, Humid; (Minneapolis, MN)'), '12'),
(self.tr('6B; Cold, Dry; (Helena, MT)'), '13'),
(self.tr('7; Very Cold; (Duluth, MN)'), '14'),
(self.tr('8; Sub-Artic; (Fairbanks, AK)'), '15'))
self.addParameter(QgsProcessingParameterEnum(self.CLIMATEZONE,
self.tr('Climate zone'),
options=[i[0] for i in self.zone], defaultValue=0))
self.addParameter(QgsProcessingParameterNumber(self.INPUT_RURAL,
self.tr('Fraction vegetation at rural site'),
QgsProcessingParameterNumber.Double,
QVariant(0.9), False, minValue=0.0, maxValue=1.0))
self.addParameter(QgsProcessingParameterString(self.FILE_PREFIX,
self.tr('File code')))
self.addParameter(QgsProcessingParameterFolderDestination(self.OUTPUT_DIR,
self.tr('Output folder')))
self.plugin_dir = os.path.dirname(__file__)
# if not (os.path.isdir(self.plugin_dir + '/data')):
# os.mkdir(self.plugin_dir + '/data')
# self.dir_poly = self.plugin_dir + '/data/poly_temp.shp'
def processAlgorithm(self, parameters, context, feedback):
# InputParameters
inputPolygonlayer = self.parameterAsVectorLayer(parameters, self.INPUT_POLYGONLAYER, context)
idField = self.parameterAsFields(parameters, self.ID_FIELD, context)
polyBT = self.parameterAsVectorLayer(parameters, self.INPUT_POLYGONLAYERTYPOLOGY, context)
morphFile = self.parameterAsString(parameters, self.INPUT_MORPH, context)
lcFile = self.parameterAsString(parameters, self.INPUT_LC, context)
rurVegCover = self.parameterAsDouble(parameters, self.INPUT_RURAL, context)
climateZone = self.parameterAsString(parameters, self.CLIMATEZONE, context)
prefix = self.parameterAsString(parameters, self.FILE_PREFIX, context)
outputDir = self.parameterAsString(parameters, self.OUTPUT_DIR, context)
if parameters['OUTPUT_DIR'] == 'TEMPORARY_OUTPUT':
if not (os.path.isdir(outputDir)):
os.mkdir(outputDir)
if not (os.path.isdir(self.plugin_dir + '/tempdata')):
os.mkdir(self.plugin_dir + '/tempdata')
pre = prefix
# temporary fix for mac, ISSUE #15
pf = sys.platform
if pf == 'darwin' or pf == 'linux2' or pf == 'linux':
if not os.path.exists(outputDir + '/' + pre):
os.makedirs(outputDir + '/' + pre)
poly_field = idField
vlayer = inputPolygonlayer
nGrids = vlayer.featureCount()
index = 1
feedback.setProgressText("Number of grids to process: " + str(nGrids))
path=vlayer.dataProvider().dataSourceUri()
if path.rfind('|') > 0:
polygonpath = path [:path.rfind('|')] # work around. Probably other solution exists
else:
polygonpath = path
map_units = vlayer.crs().mapUnits()
if not map_units == 0 or map_units == 1 or map_units == 2:
raise QgsProcessingException("Could not identify the map units of the polygon layer CRS.")
if polyBT is None:
feedback.pushWarning('No valid building type polygon layer is selected. All buildings are classified as mid-rise residental buildings.')
vlayerBT = None
else:
vlayerBT = polyBT
pathBT=vlayerBT.dataProvider().dataSourceUri()
if pathBT.rfind('|') > 0:
polygonpathBT = pathBT [:pathBT.rfind('|')] # work around. Probably other solution exists
else:
polygonpathBT = pathBT
a = {}
a['0'] = '1A'
a['1'] = '1B'
a['2'] = '2A'
a['3'] = '3A'
a['4'] = '3B'
a['5'] = '3C'
a['6'] = '4A'
a['7'] = '4B'
a['8'] = '4C'
a['9'] = '5A'
a['10'] = '5B'
a['11'] = '5C'
a['12'] = '6A'
a['13'] = '6B'
a['14'] = '7'
a['15'] = '8'
zone = a[climateZone]
# Intersect grids with building type polygons
if vlayerBT:
import processing
urbantypelayer = self.plugin_dir + '/tempdata/' + 'intersected.shp'
intersectPrefix = 'i'
parin = { 'INPUT' : polygonpath,
'INPUT_FIELDS' : [],
'OUTPUT' : urbantypelayer,
'OVERLAY' : polygonpathBT,
'OVERLAY_FIELDS' : [],
'OVERLAY_FIELDS_PREFIX' : intersectPrefix }
# feedback.setProgressText(str(parin))
processing.run('native:intersection', parin)
vlayertype = QgsVectorLayer(urbantypelayer, "polygon", "ogr")
type_field = parin['OVERLAY_FIELDS_PREFIX'] + 'uwgType'
time_field = parin['OVERLAY_FIELDS_PREFIX'] + 'uwgTime'
#Start loop of polygon grids
##land cover and morphology
index = 0
for feature in vlayer.getFeatures():
feedback.setProgress(int((index * 100) / nGrids))
if feedback.isCanceled():
feedback.setProgressText("Calculation cancelled")
break
index += 1
feat_id = int(feature.attribute(poly_field[0]))
# feedback.setProgressText(str(feat_id))
# create a default dict with all input
uwgDict = create_uwgdict()
uwgDict['zone'] = zone
uwgDict['charLength'] = feature.geometry().area() ** 0.5
with open(lcFile) as file:
next(file)
for line in file:
split = line.split()
if feat_id == int(split[0]):
# LCF_paved = split[1]
LCF_buildings = split[2]
LCF_evergreen = split[3]
LCF_decidious = split[4]
LCF_grass = split[5]
break
with open(morphFile) as file:
next(file)
for line in file:
split = line.split()
if feat_id == int(split[0]):
IMP_heights_mean = split[3]
IMP_wai = split[8]
break
# Populate dict from UMEP
uwgDict['bldHeight'] = IMP_heights_mean # average building height (m)
uwgDict['bldDensity'] = LCF_buildings # urban area building plan density (0-1)
uwgDict['verToHor'] = IMP_wai # urban area vertical to horizontal ratio
uwgDict['grasscover'] = LCF_grass # Fraction of the urban ground covered in grass/shrubs only (0-1)
uwgDict['treeCover'] = str(float(LCF_decidious) + float(LCF_evergreen)) # Fraction of the urban ground covered in trees (0-1)
## urban type fractions
if vlayerBT:
fracDict = {}
totarea = 0.0
types = ['FullServiceRestaurant','Hospital','LargeHotel','LargeOffice','MedOffice',
'MidRiseApartment','OutPatient','PrimarySchool','QuickServiceRestaurant',
'SecondarySchool','SmallHotel','SmallOffice','StandAloneRetail','StripMall',
'SuperMarket','Warehouse']
buildtime = ['Pst80','Pst80','Pst80','Pst80','Pst80','Pre80','Pst80','Pst80',
'Pst80','Pst80','Pst80','Pst80','Pst80','Pst80','Pst80','Pst80'] #this should also come from an unique post for each polygon...
fractions = [.0,.0,.0,.0,.0,.0,.0,.0,.0,.0,.0,.0,.0,.0,.0,.0]
fracDict = dict(zip(types, fractions))
timeDict = dict(zip(types, buildtime))
# populate dict with area for each available urban type within grid
for featureType in vlayertype.getFeatures():
if feat_id == int(featureType.attribute(poly_field[0])):
area = featureType.geometry().area()
fracDict[featureType.attribute(type_field)] = fracDict[featureType.attribute(type_field)] + area
timeDict[featureType.attribute(type_field)] = featureType.attribute(time_field)
totarea = totarea + area
for key in fracDict:
if totarea > 0:
fracDict[key] = fracDict[key] / totarea
else:
fracDict['MidRiseApartment'] = 1.0
# Populate dict from type polygon layer
for i in range(0, len(uwgDict['bld'][0])):
uwgDict['bld'][1][i] = timeDict[types[i]]
uwgDict['bld'][2][i] = fracDict[types[i]]
uwgDict['rurVegCover'] = rurVegCover # Fraction of the rural ground covered by vegetation
## generate input files for UWG
_name = prefix + '_' + str(feat_id)
get_uwg_file(uwgDict, outputDir + '/', _name)
feedback.setProgressText("Urban Weather Generator input files succesfully generated")
return {self.OUTPUT_DIR: outputDir}
def name(self):
return 'Urban Heat Island: UWG Prepare'
def displayName(self):
return self.tr(self.name())
def group(self):
return self.tr(self.groupId())
def groupId(self):
return 'Pre-Processor'
def shortHelpString(self):
return self.tr('<b>THIS PLUGIN IS EXPERIMENTAL</b>'
'\n'
'The <b>Urban Weather Generator</b> plugin can be used to model the urban heat island effect. Possibilities to model mutiple grids or a single location is available.<br>'
'\n'
'For more detailed information during execution, open the QGIS Python console (Plugins>Python Console).'
'\n'
'<b>NOTE</b>: This plugin requires the uwg python library. Instructions on how to install missing python libraries using the pip command can be found here: '
'https://umep-docs.readthedocs.io/en/latest/Getting_Started.html")'
'\n'
'If you are having issues that certain grids fails to be calculated you can try to reduce the simulation time step, preferably to 150 or 100 seconds. This will increase computation time.'
'\n'
'----------------------\n'
'Full manual is available via the <b>Help</b>-button.')
def helpUrl(self):
url = "https://umep-docs.readthedocs.io/en/latest/pre-processor/Urban%20Heat%20Island%20UWG%20Prepare.html"
return url
def tr(self, string):
return QCoreApplication.translate('Processing', string)
def icon(self):
cmd_folder = Path(os.path.split(inspect.getfile(inspect.currentframe()))[0]).parent
icon = QIcon(str(cmd_folder) + "/icons/icon_uwg.png")
return icon
def createInstance(self):
return ProcessingUWGPrepareAlgorithm()