Move clip_by_multiple from the workflow to the scrub layer class
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35d58c67f0
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@ -9,8 +9,10 @@ import processing
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class ScrubLayer:
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def __init__(self, qgis_path, layer_path, layer_name):
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self.qgis_path = qgis_path
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# Set the path to QGIS installation
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QgsApplication.setPrefixPath(qgis_path, True)
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QgsApplication.setPrefixPath(self.qgis_path, True)
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# Initialize QGIS application
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qgs = QgsApplication([], False)
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@ -75,13 +77,18 @@ class ScrubLayer:
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processing.run("native:clip", clip_layer_params)
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print(f'Clipping of {self.layer_name} is completed.')
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def multipart_to_singleparts(self, singleparts_layer_path):
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QgsApplication.processingRegistry().addProvider(QgsNativeAlgorithms())
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params = {'INPUT': self.layer,
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'OUTPUT': singleparts_layer_path}
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processing.run("native:multiparttosingleparts", params)
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def clip_by_multiple(self, number_of_partitions, overlay_layer_path, overlay_layers_dir, clipped_layers_dir):
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# overlay_layer = ScrubLayer(self.qgis_path, overlay_layer_path, 'Original Overlay Layer')
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# overlay_layer.split_layer(number_of_partitions, overlay_layers_dir)
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# create_folders(clipped_layers_dir, number_of_partitions)
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for layer in range(number_of_partitions):
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overlay = overlay_layers_dir + f'/layer_{layer}/layer_{layer}.shp'
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clipped = clipped_layers_dir + f'/layer_{layer}/layer_{layer}.shp'
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self.clip_layer(overlay, clipped)
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clipped_layer = ScrubLayer(self.qgis_path, clipped, 'Temp Layer')
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clipped_layer.create_spatial_index()
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def split_layer(self, number_of_layers, splitted_layers_dir, app_path):
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def split_layer(self, number_of_layers, splitted_layers_dir):
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number_of_layers -= 1
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QgsApplication.processingRegistry().addProvider(QgsNativeAlgorithms())
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create_folders(splitted_layers_dir, number_of_layers)
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@ -96,21 +103,28 @@ class ScrubLayer:
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processing.run("native:extractbyexpression", params)
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new_layer = ScrubLayer(app_path, output_layer_path, 'Temp Layer')
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new_layer = ScrubLayer(self.qgis_path, output_layer_path, 'Temp Layer')
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new_layer.create_spatial_index()
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remaining_features = number_of_layers
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os.makedirs(splitted_layers_dir + f'/layer_{remaining_features}')
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# Adding a folder for the remaining features
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os.makedirs(splitted_layers_dir + f'/layer_{number_of_layers}')
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output_layer_path = splitted_layers_dir + \
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f'/layer_{remaining_features}/layer_{remaining_features}.shp'
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f'/layer_{number_of_layers}/layer_{number_of_layers}.shp'
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params = {'INPUT': self.layer,
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'EXPRESSION': f'$id >= {number_of_layers * intervals}\r\n',
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'OUTPUT': output_layer_path}
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processing.run("native:extractbyexpression", params)
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new_layer = ScrubLayer(app_path, output_layer_path, 'Temp Layer')
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new_layer = ScrubLayer(self.qgis_path, output_layer_path, 'Temp Layer')
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new_layer.create_spatial_index()
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def multipart_to_singleparts(self, singleparts_layer_path):
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QgsApplication.processingRegistry().addProvider(QgsNativeAlgorithms())
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params = {'INPUT': self.layer,
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'OUTPUT': singleparts_layer_path}
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processing.run("native:multiparttosingleparts", params)
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def delete_duplicates(self, deleted_duplicates_layer):
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QgsApplication.processingRegistry().addProvider(QgsNativeAlgorithms())
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params = {'INPUT': self.layer_path,
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@ -12,11 +12,17 @@ class ScrubMTL:
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self.initialize_layer(property_assessment, 'Property Assessment')
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self.montreal_boundary = montreal_boundary
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self.output_paths_dir = output_paths_dir
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self.input_paths = {
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'NRCan': nrcan,
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'GeoIndex': geo_index,
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'Property Assessment': property_assessment,
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'Montreal Boundary': montreal_boundary
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}
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self.output_paths = {
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'Fixed NRCan': '',
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'Fixed GeoIndex': '',
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'Clipped Fixed GeoIndex': '',
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'Splitted NRCan': '',
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'Splitted NRCans': '',
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'Pairwise Clipped Property Assessment Partitions': '',
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'Pairwise Clipped Merged Property Assessment': '',
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'Property Assessment and NRCan': '',
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@ -41,7 +47,10 @@ class ScrubMTL:
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new_folder = path.lower().replace(' ', '_')
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output_path = self.output_paths_dir + '/' + new_folder
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os.mkdir(output_path)
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self.output_paths[path] = output_path + f'/{new_folder}.shp'
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if path[-1] != 's':
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self.output_paths[path] = output_path + f'/{new_folder}.shp'
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else:
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self.output_paths[path] = output_path
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def initialize_layer(self, layer_path, layer_name):
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return ScrubLayer(self.qgis_path, layer_path, layer_name)
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@ -54,7 +63,7 @@ class ScrubMTL:
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self.initialize_layer(self.output_paths['Fixed NRCan'],
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'Fixed NRCan')
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nrcan_fixed.create_spatial_index()
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print(f'Data Count of the NRCan layer ({nrcan_fixed.layer_name})'
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print(f'Data Count of the NRCan layer ({nrcan_fixed.layer_name}) '
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f'after fixing geometries: {nrcan_fixed.layer.featureCount()}')
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def process_geo_index(self):
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@ -65,7 +74,7 @@ class ScrubMTL:
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self.initialize_layer(self.output_paths['Fixed GeoIndex'],
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'Fixed GeoIndex')
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geo_index_fixed.create_spatial_index()
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print(f'Data Count of the GeoIndex layer ({geo_index_fixed.layer_name})'
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print(f'Data Count of the GeoIndex layer ({geo_index_fixed.layer_name}) '
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f'after fixing geometries: {geo_index_fixed.layer.featureCount()}')
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geo_index_fixed.clip_layer(self.montreal_boundary,
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self.output_paths['Clipped Fixed GeoIndex'])
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@ -79,39 +88,23 @@ class ScrubMTL:
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f'{geo_index_clipped.layer.featureCount()}')
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def process_property_assesment(self):
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print(f'Data Count of the GeoIndex layer: '
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print(f'Data Count of the Property Assessment layer: '
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f'{self.property_assessment.data_count}')
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self.property_assessment.create_spatial_index()
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def clip_with_several_overlays(self, input_layer_path, input_layer_name,
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overlaying_layer_path, overlaying_layer_name,
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number_of_overlays, splitted_layers_dir,
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clipped_layers_dir):
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"""This method clips using desired number of overlay layers
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by splitting a big overlaying layer. It uses the ScrubLayer class
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clip_layer method."""
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overlaying_layer = \
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self.initialize_layer(overlaying_layer_path, overlaying_layer_name)
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input_layer = \
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self.initialize_layer(input_layer_path, input_layer_name)
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overlaying_layer.\
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split_layer(number_of_overlays, splitted_layers_dir, self.qgis_path)
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create_folders(clipped_layers_dir, number_of_overlays)
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for overlay_layer_num in range(number_of_overlays):
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splitted_overlay_layer_path = \
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splitted_layers_dir + \
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f'/layer_{overlay_layer_num}/layer_{overlay_layer_num}.shp'
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clipped_layer_partition_path = \
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clipped_layers_dir + \
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f'/layer_{overlay_layer_num}/layer_{overlay_layer_num}.shp'
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input_layer.clip_layer(splitted_overlay_layer_path,
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clipped_layer_partition_path)
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clipped_layer = \
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self.initialize_layer(clipped_layer_partition_path,
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f'clipped_layer_{overlay_layer_num}')
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clipped_layer.create_spatial_index()
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print('Pairwise Clipping is completed.')
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def the_cleaning_workflow(self):
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"""It carries out all the steps to clean the dataset."""
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# self.generate_output_paths()
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# self.process_nrcan()
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# self.process_geo_index()
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# self.process_property_assesment()
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self.clip_with_several_overlays(self.input_paths['Property Assessment'],
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'Property Assessment',
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self.output_paths['Fixed NRCan'],
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'Fixed NRCan',
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10, self.output_paths['Splitted NRCans'],
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self.output_paths
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['Pairwise Clipped Property Assessment Partitions'])
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def refine_heights(self):
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pass
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