fix bug and refine ,end of 2025

api_ex/kmeans_sensor.py

@@ -0,0 +1,109 @@
+import wntr
+import pandas as pd
+import numpy as np
+import matplotlib.pyplot as plt
+import sklearn.cluster
+import os
+
+
+
+class QD_KMeans(object):
+    def __init__(self, wn, num_monitors):
+        # self.inp = inp
+        self.cluster_num = num_monitors # 聚类中心个数，也即测压点个数
+        self.wn=wn
+        self.monitor_nodes = []
+        self.coords = []
+        self.junction_nodes = {}  # Added missing initialization
+
+
+    def get_junctions_coordinates(self):
+       
+        for junction_name in self.wn.junction_name_list: 
+            junction = self.wn.get_node(junction_name)
+            self.junction_nodes[junction_name] = junction.coordinates
+            self.coords.append(junction.coordinates )
+
+        # print(f"Total junctions: {self.junction_coordinates}")   
+
+    def select_monitoring_points(self):
+        if not self.coords:  # Add check if coordinates are collected
+            self.get_junctions_coordinates()
+        coords = np.array(self.coords)
+        coords_normalized = (coords - coords.min(axis=0)) / (coords.max(axis=0) - coords.min(axis=0))
+        kmeans = sklearn.cluster.KMeans(n_clusters= self.cluster_num, random_state=42)
+        kmeans.fit(coords_normalized) 
+
+        for center in kmeans.cluster_centers_:
+            distances = np.sum((coords_normalized - center) ** 2, axis=1)
+            nearest_node = self.wn.junction_name_list[np.argmin(distances)]
+            self.monitor_nodes.append(nearest_node)  
+
+        return self.monitor_nodes
+    
+
+    def visualize_network(self):
+        """Visualize network with monitoring points"""
+        ax=wntr.graphics.plot_network(self.wn,   
+                               node_attribute=self.monitor_nodes,  
+                               node_size=30,  
+                               title='Optimal sensor') 
+        plt.show() 
+
+
+    
+    
+def kmeans_sensor_placement(name: str, sensor_num: int, min_diameter: int) -> list:
+    inp_name = f'./db_inp/{name}.db.inp'
+    wn= wntr.network.WaterNetworkModel(inp_name)
+    wn_cluster=QD_KMeans(wn, sensor_num)
+
+    # Select monitoring pointse
+    sensor_ids= wn_cluster.select_monitoring_points()
+
+    # wn_cluster.visualize_network()
+
+    return sensor_ids
+
+
+     
+if __name__ == "__main__":
+    #sensorindex = get_ID(name='suzhouhe_2024_cloud_0817', sensor_num=30, min_diameter=500)
+    sensorindex = kmeans_sensor_placement(name='szh', sensor_num=50, min_diameter=300)
+    print(sensorindex)
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+