def dissolve(self, field_name, output):
"""Dissolve shp by field name and store it in output"""
try:
params = {
'INPUT': self.shp_path,
'FIELD': [field_name],
'OUTPUT': output
}
# return processing.run('native:dissolve', params, feedback=self.feedback)
processing.run('native:dissolve', params, feedback=self.feedback)
print(" dissolve works")
except:
print(" NO dissolve ")
return False
def reproject(self, layers_to_project_path):
"""Reproject all input layers to 3857 CRS"""
try:
for layer in layers_to_project_path:
# the name for the new reproject file
my_array = layer.split('/')
name = my_array[len(my_array) - 1].split('.')[0]
output = os.path.dirname(__file__) + r'/processing/' + name + '_re.shp'
params = {'INPUT': layer, 'TARGET_CRS': 'EPSG:3857', 'OUTPUT': output}
processing.run("native:reprojectlayer", params, feedback=self.feedback)
print("reproject is success")
return 0
except:
print("reproject is failed")
return 1
def find_sight_line(self):
"""Run native algorithm ( in C++) to find sight line)"""
try:
intersect = os.path.dirname(__file__) + r'/processing/buildings_0_re.shp'
line_path = os.path.dirname(__file__) + r'/new_lines5.shp'
params = {'INPUT': line_path, 'PREDICATE': [2], 'INTERSECT': intersect,
'OUTPUT': self.res_folder + '/sight_line.shp'}
self.res = processing.run('native:extractbylocation', params, feedback=self.feedback)
self.layers.append(self.upload_new_layer(self.res['OUTPUT'], "_sight_line"))
return True
except:
return False
def intersections_points(self):
"""Upload input data"""
try:
junc_loc_0 = os.path.dirname(__file__) + r'/processing/intersections_0.shp'
# Find intersections points
params = {'INPUT': self.network, 'INTERSECT': self.network, 'INPUT_FIELDS': [], 'INTERSECT_FIELDS': [],
'OUTPUT': junc_loc_0}
self.res = processing.run('native:lineintersections', params, feedback=self.feedback)
print("intersections_points is success")
except:
print("intersections_points is failed")
provider_name = "ogr"
layer = QgsVectorLayer(path, layer_name, provider_name)
return layer
if __name__ == "__main__":
app = QGuiApplication([])
QgsApplication.setPrefixPath(r'C:\Program Files\QGIS 3.0\apps\qgis', True)
QgsApplication.processingRegistry().addProvider(QgsNativeAlgorithms())
QgsApplication.initQgis()
feedback = QgsProcessingFeedback()
# processing.run("native:dissolve",
# {'INPUT':'C:/Users/achituv/AppData/Roaming/QGIS/QGIS3/profiles/default/python/plugins/visibilitysyntax/'
# 'processing/highways_1.shp','FIELD':['group'],'OUTPUT':'memory:'},feedback )
"""Upload input data"""
junc_loc_0 = os.path.dirname(__file__) + r'/processing/dissolve_0.shp'
network = os.path.dirname(__file__) + r'/processing/highways_1.shp'
# network = QgsVectorLayer(
# network,
# "test",
# "ogr")
# Find intersections points
params = {'INPUT': network, 'FIELD': 'group', 'OUTPUT': junc_loc_0}
processing.run('native:dissolve', params, feedback=feedback)
"""For standalone application"""
# Exit applications
QgsApplication.exitQgis()
app.exit()
sys.path.append(r'C:\Program Files\QGIS 3.0\apps\qgis\python\plugins')
# Reference the algorithm you want to run
from plugins import processing
def upload_new_layer(path, name):
"""Upload shp layers"""
layer_name = "layer" + name
provider_name = "ogr"
layer = QgsVectorLayer(path, layer_name, provider_name)
return layer
if __name__ == "__main__":
app = QGuiApplication([])
QgsApplication.setPrefixPath(r'C:\Program Files\QGIS 3.0\apps\qgis', True)
QgsApplication.processingRegistry().addProvider(QgsNativeAlgorithms())
QgsApplication.initQgis()
feedback = QgsProcessingFeedback()
"""Upload input data"""
input = os.path.dirname(os.path.dirname(__file__)) + r'/dissolve_0.shp'
OUTPUT = os.path.dirname(__file__) + r'/single_part.shp'
params = {'INPUT': input, 'OUTPUT': OUTPUT}
processing.run('native:multiparttosingleparts', params, feedback=feedback)
"""For standalone application"""
# Exit applications
QgsApplication.exitQgis()
app.exit()
if __name__ == "__main__":
app = QGuiApplication([])
QgsApplication.setPrefixPath(r'C:\Program Files\QGIS 3.0\apps\qgis', True)
QgsApplication.processingRegistry().addProvider(QgsNativeAlgorithms())
QgsApplication.initQgis()
feedback = QgsProcessingFeedback()
"""Upload input data"""
layer_2 = upload_new_layer(
r'C:/Users/achituv/AppData/Roaming/QGIS/QGIS3/profiles/default/python/plugins/visibilitysyntax'
r'/test\mean_close_point\mean_close_coor.shp','test1')
layer_1 = upload_new_layer(
r'C:\Users\achituv\AppData\Roaming\QGIS\QGIS3\profiles\default\python\plugins\visibilitysyntax' \
r'\test\POI\results_file/extracted.shp','test2')
layer_3 = upload_new_layer(
r'C:\Users\achituv\AppData\Roaming\QGIS\QGIS3\profiles\default\python\plugins\visibilitysyntax' \
r'\test\POI\results_file\off_pnts.shp','test3')
layers = [layer_1, layer_2,layer_3]
OUTPUT = r'C:\Users\achituv\AppData\Roaming\QGIS\QGIS3\profiles\default\python\plugins\visibilitysyntax' \
r'\test\POI\results_file\merge.shp'
params = {'LAYERS': layers,'CRS': 'EPSG:3857', 'OUTPUT': OUTPUT}
processing.run('native:mergevectorlayers', params, feedback=feedback)
"""For standalone application"""
# Exit applications
QgsApplication.exitQgis()
app.exit()
def add_poi_to_intersections(use='plugin'):
if use == "standalone":
app = QGuiApplication([])
QgsApplication.setPrefixPath(r'C:\Program Files\QGIS 3.0\apps\qgis',
True)
QgsApplication.processingRegistry().addProvider(QgsNativeAlgorithms())
QgsApplication.initQgis()
feedback = QgsProcessingFeedback()
""" implement Clip """
try:
"""Upload input data"""
input = r'C:\Users\achituv\AppData\Roaming\QGIS\QGIS3\profiles\default\python\plugins\visibilitysyntax' \
r'/processing/poi_re.shp'
overlay = 'C:/Users/achituv/AppData/Roaming/QGIS/QGIS3/profiles/default/python/plugins/visibilitysyntax' \
'/processing/buildings_0_re.shp'
output = r'C:\Users\achituv\AppData\Roaming\QGIS\QGIS3\profiles\default\python\plugins\visibilitysyntax' \
r'\test\POI\results_file/cliped.shp'
params = {'INPUT': input, 'OVERLAY': overlay, 'OUTPUT': output}
processing.run('native:clip', params, feedback=feedback)
print("Clip success")
except:
print("Clip failed")
""" implement Extract """
try:
"""Upload input data"""
input = 'C:/Users/achituv/AppData/Roaming/QGIS/QGIS3/profiles/default/python/plugins/visibilitysyntax/' \
'processing/poi_re.shp'
intersect = 'C:/Users/achituv/AppData/Roaming/QGIS/QGIS3/profiles/default/python/plugins/visibilitysyntax/' \
'processing/buildings_0_re.shp'
output = r'C:\Users\achituv\AppData\Roaming\QGIS\QGIS3\profiles\default\python\plugins\visibilitysyntax' \
r'\test\POI\results_file/extracted.shp'
params = {
'INPUT': input,
'PREDICATE': [2],
'INTERSECT': intersect,
'OUTPUT': output
}
processing.run('native:extractbylocation', params, feedback=feedback)
print("Extract success")
except:
print("Extract failed")
""" implement Point along geometry """
try:
input = 'C:/Users/achituv/AppData/Roaming/QGIS/QGIS3/profiles/default/python/plugins/visibilitysyntax' \
'/processing/highways_0_re.shp'
output = r'C:\Users\achituv\AppData\Roaming\QGIS\QGIS3\profiles\default\python\plugins\visibilitysyntax' \
r'\test\POI\results_file/points_along.shp'
alg = PointsAlongGeometry()
alg.initAlgorithm()
context = QgsProcessingContext()
params = {
'INPUT': input,
'DISTANCE': 10,
'START_OFFSET': 0,
'END_OFFSET': 0,
'OUTPUT': output
}
res = alg.processAlgorithm(params, context, feedback=feedback)
print("Point along geometry success")
except:
print("Point along geometry failed")
"""implement add ID"""
try:
hub_path = os.path.dirname(
__file__) + r'/results_file/points_along.shp'
junc = upload_new_layer(hub_path, "hub")
if junc.fields()[len(junc.fields()) - 1].name() != "vis_id":
junc.dataProvider().addAttributes(
[QgsField("vis_id", QVariant.Int)])
junc.updateFields()
n = len(junc.fields())
for i, feature in enumerate(junc.getFeatures()):
junc.dataProvider().changeAttributeValues({i: {n - 1: i}})
print("add ID success")
except:
print("add ID failed")
""" implement Distance to nearest hub """
try:
"""Upload input data"""
input_path = r'C:\Users\achituv\AppData\Roaming\QGIS\QGIS3\profiles\default\python\plugins\visibilitysyntax' \
r'\test\POI\results_file/cliped.shp'
input = upload_new_layer(input_path, "test_input")
hubs_path = r'C:\Users\achituv\AppData\Roaming\QGIS\QGIS3\profiles\default\python\plugins\visibilitysyntax' \
r'\test\POI\results_file/points_along.shp'
hubs = upload_new_layer(hubs_path, "test_hubs_")
output = r'C:\Users\achituv\AppData\Roaming\QGIS\QGIS3\profiles\default\python\plugins\visibilitysyntax' \
r'\test\POI\results_file/line_to_points.shp'
alg = HubDistanceLines()
alg.initAlgorithm()
# Some preprocessing for context
project = QgsProject.instance()
target_crs = QgsCoordinateReferenceSystem()
target_crs.createFromOgcWmsCrs(input.crs().authid())
project.setCrs(target_crs)
context = QgsProcessingContext()
context.setProject(project)
params = {
'INPUT': input,
'HUBS': hubs,
'FIELD': 'vis_id',
'UNIT': 4,
'OUTPUT': output
}
alg.processAlgorithm(params, context, feedback=feedback)
print("Distance to nearest hub success")
except:
print("Distance to nearest hub failed")
""" implement Polygon to lines """
try:
input = 'C:/Users/achituv/AppData/Roaming/QGIS/QGIS3/profiles/default/python/plugins/visibilitysyntax/' \
'processing/buildings_0_re.shp'
output = r'C:\Users\achituv\AppData\Roaming\QGIS\QGIS3\profiles\default\python\plugins\visibilitysyntax' \
r'\test\POI\results_file\poly_as_lines.shp'
alg = PolygonsToLines()
alg.initAlgorithm()
context = QgsProcessingContext()
params = {'INPUT': input, 'OUTPUT': output}
res = alg.processAlgorithm(params, context, feedback=feedback)
print(" Polygon to lines success")
except:
print(" Polygon to lines failed")
""" implement Line intersections """
try:
"""Upload input data"""
input_path = r'C:\Users\achituv\AppData\Roaming\QGIS\QGIS3\profiles\default\python\plugins\visibilitysyntax' \
r'\test\POI\results_file\line_to_points.shp'
input = upload_new_layer(input_path, "test_input")
intersect_path = r'C:\Users\achituv\AppData\Roaming\QGIS\QGIS3\profiles\default\python\plugins\visibilitysyntax' \
r'\test\POI\results_file\poly_as_lines.shp'
intersect = upload_new_layer(intersect_path, "test_intersect")
output = r'C:\Users\achituv\AppData\Roaming\QGIS\QGIS3\profiles\default\python\plugins\visibilitysyntax' \
r'\test\POI\results_file\off_pnts.shp'
params = {
'INPUT': input,
'INTERSECT': intersect,
'INPUT_FIELDS': [],
'INTERSECT_FIELDS': [],
'OUTPUT': output
}
processing.run('native:lineintersections', params, feedback=feedback)
print("Line intersections success")
except:
print("Line intersections failed")
""" implement Merge """
try:
layer_2 = upload_new_layer(
r'C:/Users/achituv/AppData/Roaming/QGIS/QGIS3/profiles/default/python/plugins/visibilitysyntax'
r'/test\mean_close_point\mean_close_coor.shp', 'test1')
layer_1 = upload_new_layer(
r'C:\Users\achituv\AppData\Roaming\QGIS\QGIS3\profiles\default\python\plugins\visibilitysyntax' \
r'\test\POI\results_file/extracted.shp', 'test2')
layer_3 = upload_new_layer(
r'C:\Users\achituv\AppData\Roaming\QGIS\QGIS3\profiles\default\python\plugins\visibilitysyntax' \
r'\test\POI\results_file\off_pnts.shp', 'test3')
layers = [layer_1, layer_2, layer_3]
OUTPUT = r'C:\Users\achituv\AppData\Roaming\QGIS\QGIS3\profiles\default\python\plugins\visibilitysyntax' \
r'\test\POI\results_file\merge.shp'
params = {'LAYERS': layers, 'CRS': 'EPSG:3857', 'OUTPUT': OUTPUT}
processing.run('native:mergevectorlayers', params, feedback=feedback)
print("Merge success")
except:
print("Merge failed")
""" implement Delete Duplicate geometry """
try:
"""Upload input data"""
feedback = QgsProcessingFeedback()
"""Upload input data"""
input = 'C:/Users/achituv/AppData/Roaming/QGIS/QGIS3/profiles/default/python/plugins/visibilitysyntax/test/POI' \
'/results_file/merge.shp'
OUTPUT = r'C:\Users\achituv\AppData\Roaming\QGIS\QGIS3\profiles\default\python\plugins\visibilitysyntax\test\POI' \
r'\results_file\final.shp'
alg = DeleteDuplicateGeometries()
alg.initAlgorithm()
context = QgsProcessingContext()
params = {'INPUT': input, 'OUTPUT': OUTPUT}
res = alg.processAlgorithm(params, context, feedback=feedback)
print("Delete Duplicate geometry success")
except:
print("Delete Duplicate geometry failed")
"""For standalone application"""
if use == 'standalone':
QgsApplication.exitQgis()
app.exit()
from plugins import processing
def upload_new_layer(path, name):
"""Upload shp layers"""
layer_name = "layer" + name
provider_name = "ogr"
layer = QgsVectorLayer(path, layer_name, provider_name)
return layer
if __name__ == "__main__":
app = QGuiApplication([])
QgsApplication.setPrefixPath(r'C:\Program Files\QGIS 3.0\apps\qgis', True)
QgsApplication.processingRegistry().addProvider(QgsNativeAlgorithms())
QgsApplication.initQgis()
feedback = QgsProcessingFeedback()
"""Upload input data"""
input = upload_new_layer(
r'C:\Users\achituv\AppData\Roaming\QGIS\QGIS3\profiles\default\python\plugins\visibilitysyntax\test\mean_close_point/cleaned.shp',
'test')
OUTPUT = r'C:\Users\achituv\AppData\Roaming\QGIS\QGIS3\profiles\default\python\plugins\visibilitysyntax\test\mean_close_point/mean_close_coor.shp'
params = {'INPUT': input, 'UID': 'InputID', 'OUTPUT': OUTPUT}
processing.run('native:meancoordinates', params, feedback=feedback)
"""For standalone application"""
# Exit applications
QgsApplication.exitQgis()
app.exit()
"""Upload shp layers"""
layer_name = "layer" + name
provider_name = "ogr"
layer = QgsVectorLayer(path, layer_name, provider_name)
return layer
if __name__ == "__main__":
app = QGuiApplication([])
QgsApplication.setPrefixPath(r'C:\Program Files\QGIS 3.0\apps\qgis', True)
QgsApplication.processingRegistry().addProvider(QgsNativeAlgorithms())
QgsApplication.initQgis()
feedback = QgsProcessingFeedback()
"""Upload input data"""
input = r'C:\Users\achituv\AppData\Roaming\QGIS\QGIS3\profiles\default\python\plugins\visibilitysyntax\test\mean_close_point/distance_matrix.shp'
OUTPUT = r'C:\Users\achituv\AppData\Roaming\QGIS\QGIS3\profiles\default\python\plugins\visibilitysyntax\test\mean_close_point/extracted.shp'
params = {
'INPUT': input,
'FIELD': 'Distance',
'OPERATOR': 4,
'VALUE': '10',
'OUTPUT': OUTPUT
}
processing.run('native:extractbyattribute', params, feedback=feedback)
"""For standalone application"""
# Exit applications
QgsApplication.exitQgis()
app.exit()
def __init__(self, use='plugin'):
if use == "standalone":
app = QGuiApplication([])
QgsApplication.setPrefixPath(
r'C:\Program Files\QGIS 3.0\apps\qgis', True)
QgsApplication.processingRegistry().addProvider(
QgsNativeAlgorithms())
QgsApplication.initQgis()
feedback = QgsProcessingFeedback()
"""implement add ID"""
try:
junc_path = os.path.dirname(
os.path.dirname(os.path.dirname(
__file__))) + r'/processing/intersections.shp'
junc = self.upload_new_layer(junc_path, "junc")
if junc.fields()[len(junc.fields()) - 1].name() != "vis_id":
junc.dataProvider().addAttributes(
[QgsField("vis_id", QVariant.Int)])
junc.updateFields()
n = len(junc.fields())
for i, feature in enumerate(junc.getFeatures()):
junc.dataProvider().changeAttributeValues({i: {n - 1: i}})
print("add ID success")
except:
print("add ID failed")
""" implement distance matrix"""
try:
input = os.path.dirname(os.path.dirname(
os.path.dirname(__file__))) + r'/processing/intersections.shp'
INPUT_FIELD = 'vis_id'
TARGET = os.path.dirname(os.path.dirname(
os.path.dirname(__file__))) + r'/processing/intersections.shp'
TARGET_FIELD = 'vis_id'
OUTPUT = r'C:\Users\achituv\AppData\Roaming\QGIS\QGIS3\profiles\default\python\plugins\visibilitysyntax\test\mean_close_point/distance_matrix.shp'
params = {
'INPUT': input,
'INPUT_FIELD': INPUT_FIELD,
'TARGET': TARGET,
'TARGET_FIELD': TARGET_FIELD,
'OUTPUT': OUTPUT,
'MATRIX_TYPE': 0,
'NEAREST_POINTS': 10,
'OUTPUT': OUTPUT
}
alg = PointDistance()
alg.initAlgorithm()
# Some preprocessing for context
project = QgsProject.instance()
target_crs = QgsCoordinateReferenceSystem()
layer_1 = self.upload_new_layer(input, "test")
target_crs.createFromOgcWmsCrs(layer_1.crs().authid())
project.setCrs(target_crs)
context = QgsProcessingContext()
context.setProject(project)
alg.processAlgorithm(params, context, feedback=feedback)
print("distance matrix success")
except:
print("distance matrix failed")
""" implement extract"""
try:
input = r'C:\Users\achituv\AppData\Roaming\QGIS\QGIS3\profiles\default\python\plugins\visibilitysyntax\test\mean_close_point/distance_matrix.shp'
OUTPUT = r'C:\Users\achituv\AppData\Roaming\QGIS\QGIS3\profiles\default\python\plugins\visibilitysyntax\test\mean_close_point/extracted.shp'
params = {
'INPUT': input,
'FIELD': 'Distance',
'OPERATOR': 4,
'VALUE': '20',
'OUTPUT': OUTPUT
}
processing.run('native:extractbyattribute',
params,
feedback=feedback)
print("extract success")
except:
print("extract failed")
""" implement Multipart to singleparts"""
try:
input = r'C:\Users\achituv\AppData\Roaming\QGIS\QGIS3\profiles\default\python\plugins\visibilitysyntax\test\mean_close_point/extracted.shp'
OUTPUT = r'C:\Users\achituv\AppData\Roaming\QGIS\QGIS3\profiles\default\python\plugins\visibilitysyntax\test\mean_close_point/single_part.shp'
params = {'INPUT': input, 'OUTPUT': OUTPUT}
processing.run('native:multiparttosingleparts',
params,
feedback=feedback)
print("Multipart to singleparts success")
except:
print("Multipart to singleparts failed")
""" implement Delete duplicate geometries"""
try:
input = r'C:/Users/achituv/AppData/Roaming/QGIS/QGIS3/profiles/default/python/plugins/visibilitysyntax\test\mean_close_point/single_part.shp'
OUTPUT = r'C:\Users\achituv\AppData\Roaming\QGIS\QGIS3\profiles\default\python\plugins\visibilitysyntax\test\mean_close_point/cleaned.shp'
alg = DeleteDuplicateGeometries()
alg.initAlgorithm()
context = QgsProcessingContext()
params = {'INPUT': input, 'OUTPUT': OUTPUT}
res = alg.processAlgorithm(params, context, feedback=feedback)
print("Delete duplicate geometries success")
except:
print("Delete duplicate geometries failed")
""" implement Mean coordinates"""
try:
input = self.upload_new_layer(
r'C:\Users\achituv\AppData\Roaming\QGIS\QGIS3\profiles\default\python\plugins\visibilitysyntax\test\mean_close_point/cleaned.shp',
'test')
OUTPUT = r'C:\Users\achituv\AppData\Roaming\QGIS\QGIS3\profiles\default\python\plugins\visibilitysyntax\test\mean_close_point/mean_close_coor.shp'
params = {'INPUT': input, 'UID': 'InputID', 'OUTPUT': OUTPUT}
processing.run('native:meancoordinates', params, feedback=feedback)
print("Mean coordinates success")
except:
print("Mean coordinates failed")
"""For standalone application"""
# Exit applications
if use == 'standalone':
QgsApplication.exitQgis()
app.exit()
def upload_new_layer(path, name):
"""Upload shp layers"""
layer_name = "layer" + name
provider_name = "ogr"
layer = QgsVectorLayer(path, layer_name, provider_name)
return layer
if __name__ == "__main__":
app = QGuiApplication([])
QgsApplication.setPrefixPath(r'C:\Program Files\QGIS 3.0\apps\qgis', True)
QgsApplication.processingRegistry().addProvider(QgsNativeAlgorithms())
QgsApplication.initQgis()
feedback = QgsProcessingFeedback()
"""Upload input data"""
input = r'C:\Users\achituv\AppData\Roaming\QGIS\QGIS3\profiles\default\python\plugins\visibilitysyntax' \
r'\test\POI\poi_osm_r.shp'
overlay = 'C:/Users/achituv/AppData/Roaming/QGIS/QGIS3/profiles/default/python/plugins/visibilitysyntax' \
'/processing/buildings_1.shp'
output = r'C:\Users\achituv\AppData\Roaming\QGIS\QGIS3\profiles\default\python\plugins\visibilitysyntax' \
r'\test\POI\results_file/cliped.shp'
params = {'INPUT': input, 'OVERLAY': overlay, 'OUTPUT': output}
processing.run('native:clip', params, feedback=feedback)
"""For standalone application"""
# Exit applications
QgsApplication.exitQgis()
app.exit()
layer = QgsVectorLayer(path, layer_name, provider_name)
return layer
if __name__ == "__main__":
app = QGuiApplication([])
QgsApplication.setPrefixPath(r'C:\Program Files\QGIS 3.0\apps\qgis', True)
QgsApplication.processingRegistry().addProvider(QgsNativeAlgorithms())
QgsApplication.initQgis()
feedback = QgsProcessingFeedback()
"""Upload input data"""
input = 'C:/Users/achituv/AppData/Roaming/QGIS/QGIS3/profiles/default/python/plugins/visibilitysyntax/' \
'test/POI/poi_osm_r.shp'
intersect = 'C:/Users/achituv/AppData/Roaming/QGIS/QGIS3/profiles/default/python/plugins/visibilitysyntax/' \
'processing/buildings_1.shp'
output = r'C:\Users\achituv\AppData\Roaming\QGIS\QGIS3\profiles\default\python\plugins\visibilitysyntax' \
r'\test\POI\results_file/extracted.shp'
params = {
'INPUT': input,
'PREDICATE': [2],
'INTERSECT': intersect,
'OUTPUT': output
}
processing.run('native:extractbylocation', params, feedback=feedback)
"""For standalone application"""
# Exit applications
QgsApplication.exitQgis()
app.exit()
qgs.initQgis()
prefix = QgsApplication.prefixPath()
print(prefix)
# 在这里编写代码，加载一些图层，使用处理算法等
sys.path.append(os.path.join(prefix, "python", "plugins"))
from plugins.processing.core.Processing import Processing
from plugins import processing
Processing.initialize()
for alg in QgsApplication.processingRegistry().algorithms():
alg: QgsProcessingAlgorithm
print(alg.group(), alg.provider().name(), alg.name())
result = processing.run('gdal:gdalinfo',
{
'EXTRA': '',
'INPUT': '../data/test.tif',
'MIN_MAX': False,
'NOGCP': False,
'NO_METADATA': False,
# 'OUTPUT': 'TEMPORARY_OUTPUT',
'OUTPUT': '../data/test.html',
'STATS': False
}
)
print(result)
# 脚本完成后，调用exitQgis（）从内存中删除提供者和图层注册
qgs.exitQgis()
if __name__ == "__main__":
app = QGuiApplication([])
QgsApplication.setPrefixPath(r'C:\Program Files\QGIS 3.0\apps\qgis', True)
QgsApplication.processingRegistry().addProvider(QgsNativeAlgorithms())
QgsApplication.initQgis()
feedback = QgsProcessingFeedback()
"""Upload input data"""
input_path = r'C:\Users\achituv\AppData\Roaming\QGIS\QGIS3\profiles\default\python\plugins\visibilitysyntax' \
r'\test\POI\results_file\line_to_points.shp'
input = upload_new_layer(input_path, "test_input")
intersect_path = r'C:\Users\achituv\AppData\Roaming\QGIS\QGIS3\profiles\default\python\plugins\visibilitysyntax' \
r'\test\POI\results_file\poly_as_lines.shp'
intersect = upload_new_layer(intersect_path, "test_intersect")
output = r'C:\Users\achituv\AppData\Roaming\QGIS\QGIS3\profiles\default\python\plugins\visibilitysyntax' \
r'\test\POI\results_file\off_pnts.shp'
params = {
'INPUT': input,
'INTERSECT': intersect,
'INPUT_FIELDS': [],
'INTERSECT_FIELDS': [],
'OUTPUT': output
}
processing.run('native:lineintersections', params, feedback=feedback)
"""For standalone application"""
# Exit applications
QgsApplication.exitQgis()
app.exit()
