feature/add-conversion-to-meters-and-geojson #3
@ -4,6 +4,26 @@ from shapely.geometry import Polygon, Point, LineString
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import networkx as nx
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from typing import List, Tuple
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from rtree import index
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import math
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def haversine(lon1, lat1, lon2, lat2):
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"""
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Calculate the great-circle distance between two points
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on the Earth specified by their longitude and latitude.
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"""
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R = 6371000 # Radius of the Earth in meters
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phi1 = math.radians(lat1)
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phi2 = math.radians(lat2)
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delta_phi = math.radians(lat2 - lat1)
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delta_lambda = math.radians(lon2 - lon1)
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a = math.sin(delta_phi / 2.0) ** 2 + \
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math.cos(phi1) * math.cos(phi2) * \
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math.sin(delta_lambda / 2.0) ** 2
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c = 2 * math.atan2(math.sqrt(a), math.sqrt(1 - a))
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return R * c # Output distance in meters
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class DistrictHeatingNetworkCreator:
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@ -29,7 +49,8 @@ class DistrictHeatingNetworkCreator:
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self._create_graph()
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self._create_mst()
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self._iteratively_remove_edges()
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self.add_centroids_to_mst() # Add centroids to the MST
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self._add_centroids_to_mst()
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self._convert_edge_weights_to_meters()
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return self.final_mst
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def _load_and_process_data(self):
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@ -217,7 +238,7 @@ class DistrictHeatingNetworkCreator:
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single_connection_street_nodes = find_single_connection_street_nodes(self.final_mst)
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self.final_mst_steps.append(list(self.final_mst.edges(data=True)))
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def add_centroids_to_mst(self):
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def _add_centroids_to_mst(self):
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"""
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Add centroids to the final MST graph and connect them to their associated node on the graph.
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"""
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@ -238,6 +259,16 @@ class DistrictHeatingNetworkCreator:
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if nearest_point:
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self.final_mst.add_edge(centroid_tuple, nearest_point, weight=min_distance)
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def _convert_edge_weights_to_meters(self):
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"""
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Convert all edge weights in the final MST graph to meters using the Haversine formula.
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"""
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for u, v, data in self.final_mst.edges(data=True):
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lon1, lat1 = u
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lon2, lat2 = v
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distance = haversine(lon1, lat1, lon2, lat2)
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self.final_mst[u][v]['weight'] = distance
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def plot_network_graph(self):
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"""
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Plot the network graph using matplotlib and networkx.
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2923
output_files/network_graph.geojson
Normal file
2923
output_files/network_graph.geojson
Normal file
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