import networkx as nx import matplotlib.pyplot as plt # 输入数据 locations = [ [125.330802,125.401931,125.326444,125.332284,125.322837,125.32563,125.334942,125.378548,125.386251,125.426883,125.42665,125.437111,125.453763,125.431396,125.430705,125.41968,125.437906,125.404171,125.385772,125.341942,125.341535,125.300812,125.307316,125.345642,125.331492,125.330322,125.284474,125.334851,125.30606,125.377211,125.381077,125.417041,125.41427,125.416371,125.432283,125.401676,125.403855,125.38582,125.426733,125.291], [43.917542,43.919075,43.905821,43.90266,43.900238,43.89703,43.888187,43.904508,43.892574,43.907904,43.896354,43.894605,43.889122,43.88774,43.882928,43.887149,43.8789,43.879647,43.883112,43.873763,43.861505,43.854652,43.876513,43.850479,43.833745,43.825044,43.812019,43.803154,43.793054,43.788869,43.824152,43.816805,43.801673,43.82893,43.83235,43.843713,43.854322,43.868372,43.871792,43.8306] ] num_flights = 4 flight_capacity = [10, 10, 10, 10] # 将坐标转化为图 G = nx.Graph() for i in range(len(locations[0])): G.add_node(i+1, pos=(locations[0][i], locations[1][i])) for i in range(len(locations[0])): for j in range(i+1, len(locations[0])): dist = ((locations[0][i]-locations[0][j])**2 + (locations[1][i]-locations[1][j])**2)**0.5 G.add_edge(i+1, j+1, weight=dist) # 添加起点和终点 start_node = len(locations[0])+1 end_node = len(locations[0])+2 G.add_node(start_node, pos=(0, 0)) G.add_node(end_node, pos=(0, 0)) # 添加边和边权 for i in range(len(locations[0])): G.add_edge(start_node, i+1, weight=0) G.add_edge(i+1, end_node, weight=0) for f in range(num_flights): for i in range(len(locations[0])): G.add_edge(i+1, len(locations[0])+flen(locations[0])+i+1, weight=0) G.add_edge(len(locations[0])+flen(locations[0])+i+1, end_node, weight=0) # 添加航班容量的限制 for f in range(num_flights): for i in range(len(locations[0])): G.add_edge(len(locations[0])+flen(locations[0])+i+1, len(locations[0])+flen(locations[0])+len(locations[0])+1, weight=-flight_capacity[f]) # 创造路径规划模型 path_model = nx.DiGraph() for i in range(len(locations[0])): for f in range(num_flights): for j in range(len(locations[0])): if i != j: path_model.add_edge(len(locations[0])+flen(locations[0])+i+1, len(locations[0])+flen(locations[0])+j+1, weight=G[i+1][j+1]['weight']+G[len(locations[0])+flen(locations[0])+i+1][len(locations[0])+flen(locations[0])+j+1]['weight']) # 添加航班时间的限制 for f in range(num_flights): for i in range(len(locations[0])): for j in range(len(locations[0])): if i != j: path_model.add_edge(len(locations[0])+f*len(locations[0])+i+1, len(locations[0])+((f+1)%num_flights)len(locations[0])+j+1, weight=G[i+1][j+1]['weight']) # 求解最短路径 path = nx.bellman_ford_path(path_model, source=start_node, target=end_node, weight='weight') # 绘制路径图 pos = nx.get_node_attributes(G, 'pos') nx.draw_networkx_nodes(G, pos, node_size=50, node_color='w') nx.draw_networkx_labels(G, pos) nx.draw_networkx_edges(G, pos, edgelist=G.edges(), width=0.5) for f in range(num_flights): start = len(locations[0])+flen(locations[0])+1 end = len(locations[0])+(f+1)*len(locations[0])+1 nx.draw_networkx_edges(G, pos, edgelist=path[start:end], edge_color='r', width=2.0, alpha=0.7) plt.axis('off') plt.show()找出错误并改正

代码解读，import networkx as nx import pandas as pd import matplotlib.pyplot as plt import numpy as np import scipy as sp

- import matplotlib.pyplot as plt：导入 matplotlib 库，并将其子模块 pyplot 命名为 plt，它是一个用于绘制各种类型图表的Python库，包括线图、散点图、柱状图等。 - import numpy as np：导入 numpy...

import pandas as pd import spacy from IPython import get_ipython nlp = spacy.load("en_core_web_sm") from spacy.matcher import Matcher import networkx as nx import matplotlib.pyplot as plt from tqdm import tqdm pd.set_option('display.max_colwidth', 200) get_ipython().run_line_magic('matplotlib', 'inline')

这是一段 Python 代码，主要是导入了一些常用的 Python 库和...- matplotlib：用于数据可视化的库； - tqdm：用于在循环中显示进度条的库。这些库和模块的导入表明了这段代码可能是用于 NLP 或数据分析方面的任务。

import networkx as nx import matplotlib.pyplot as plt # create graph object G = nx.Graph() # add nodes G.add_node('A') G.add_node('B') G.add_node('C') G.add_node('D') # add edges with weights G.add_edge('A', 'B', weight=5) G.add_edge('A', 'C', weight=7) G.add_edge('B', 'D', weight=6) G.add_edge('C', 'D', weight=3) # define node positions (optional) pos = {'A': (0, 0), 'B': (1, 1), 'C': (-1, 1), 'D': (0, 2)} # draw nodes and edges with labels nx.draw_networkx_nodes(G, pos) nx.draw_networkx_edges(G, pos) nx.draw_networkx_labels(G, pos) edge_labels = nx.get_edge_attributes(G, 'weight') nx.draw_networkx_edge_labels(G, pos, edge_labels=edge_labels) plt.axis('off') plt.show()

import matplotlib.pyplot as plt # 创建一个带权图 G = nx.Graph() # 添加节点 G.add_node('A') G.add_node('B') G.add_node('C') G.add_node('D') # 添加带权边 G.add_edge('A', 'B', weight=5) G.add_edge('A'...

import networkx as nximport matplotlib.pyplot as plt# 读取人物关系数据with open('characters.txt', 'r') as f: data = f.readlines()# 创建空的Graph对象G = nx.Graph()# 添加节点和边for line in data: characters = line.strip().split(',') for i in range(len(characters)): if not G.has_node(characters[i]): G.add_node(characters[i]) for j in range(i+1, len(characters)): if not G.has_node(characters[j]): G.add_node(characters[j]) if not G.has_edge(characters[i], characters[j]): G.add_edge(characters[i], characters[j])# 绘制图形pos = nx.spring_layout(G)nx.draw(G, pos, with_labels=True, font_size=10, node_size=500, node_color='lightblue', edge_color='gray')plt.show()

这是Python中导入networkx和matplotlib.pyplot模块的语句。networkx是一个用于创建、操作和研究复杂网络的Python库，而matplotlib.pyplot是一个用于绘制图形的Python库。

修改代码，将图形绘制成一个矩形布局：import matplotlib.pyplot as plt# 将图形绘制成一个圆形布局pos = nx.circular_layout(G)# 绘制图形的节点和边nx.draw_networkx_nodes(G, pos)nx.draw_networkx_edges(G, pos)# 添加节点标签node_labels = {node: str(node) for node in G.nodes()}nx.draw_networkx_labels(G, pos, node_labels)# 添加边权重标签edge_labels = {(u, v): str(d['weight']) for u, v, d in G.edges(data=True)}nx.draw_networkx_edge_labels(G, pos, edge_labels)# 显示图形plt.show()

import matplotlib.pyplot as plt import networkx as nx # 创建一个图形对象 G = nx.Graph() # 添加节点和边 G.add_edges_from([(1, 2), (1, 3), (2, 3), (2, 4), (3, 4), (4, 5), (5, 6)]) # 生成矩形布局 pos ...

import matplotlib.pyplot as plt# 将图形绘制成一个圆形布局pos = nx.circular_layout(G)# 绘制图形的节点和边nx.draw_networkx_nodes(G, pos)nx.draw_networkx_edges(G, pos)# 添加节点标签node_labels = {node: str(node) for node in G.nodes()}nx.draw_networkx_labels(G, pos, node_labels)# 添加边权重标签edge_labels = {(u, v): str(d['weight']) for u, v, d in G.edges(data=True)}nx.draw_networkx_edge_labels(G, pos, edge_labels)# 显示图形plt.show() 修改代码，将图形绘制成一个矩形布局

import matplotlib.pyplot as plt import networkx as nx # 创建一个图形对象 G = nx.Graph() # 添加节点和边 G.add_edges_from([(1, 2), (1, 3), (2, 3), (2, 4), (3, 4), (4, 5), (5, 6)]) # 生成矩形布局 pos ...

import matplotlib.pyplot as plt # 将图形绘制成一个矩形布局 pos = nx.spring_layout(G, k=0.5, iterations=50) # 绘制图形的节点和边 nx.draw_networkx_nodes(G, pos) nx.draw_networkx_edges(G, pos) # 添加节点标签 node_labels = {node: str(node) for node in G.nodes()} nx.draw_networkx_labels(G, pos, node_labels) # 添加边权重标签 edge_labels = {(u, v): str(d['weight']) for u, v, d in G.edges(data=True)} nx.draw_networkx_edge_labels(G, pos, edge_labels) # 显示图形 plt.show() 修改代码，将图的标题改为“网络图”

import matplotlib.pyplot as plt pos = nx.spring_layout(G, k=0.5, iterations=50) nx.draw_networkx_nodes(G, pos) nx.draw_networkx_edges(G, pos) node_labels = {node: str(node) for node in G.nodes()} ...

import networkx as nx

import networkx as nx 是Python中用于导入networkx库的语句。networkx是一个用于创建、操作和分析复杂网络的Python库。它提供了许多用于构建和分析图形的工具和算法，包括图形可视化、图形布局、图形分析等。使用...

AttributeError: module 'matplotlib.pyplot' has no attribute 'add_subplot'

在使用matplotlib.pyplot时，出现了AttributeError: module 'matplotlib.pyplot' has no attribute 'add_subplot'的错误。这个错误通常是由于版本不兼容或安装问题引起的。解决这个问题的方法如下[^1]： 1. 确保你...

import pandas as pd import numpy as np import networkx as nx import matplotlib.pyplot as plt # 读取Excel文件中的邻接矩阵 adjacency_matrix = pd.read_excel('output.xlsx', index_col=0) # 将邻接矩阵转换为numpy数组 adjacency_matrix = adjacency_matrix.to_numpy() # 创建有向图对象 G = nx.DiGraph(adjacency_matrix) def preprocess(G): p = 0 directedGraph = nx.DiGraph() for u in G.nodes(): for v in G.neighbors(u): if (v != u): propProb = G.number_of_edges(u, v) / G.degree(v) directedGraph.add_edge(u, v, pp=propProb) return directedGraph def simulate(G, seedNode, propProbability): newActive = True currentActiveNodes = seedNode.copy() newActiveNodes = set() activatedNodes = seedNode.copy() influenceSpread = len(seedNode) while newActive: for node in currentActiveNodes: for neighbor in G.neighbors(node): if neighbor not in activatedNodes: if G[node][neighbor]['pp'] > propProbability: newActiveNodes.add(neighbor) activatedNodes.append(neighbor) influenceSpread += len(newActiveNodes) if newActiveNodes: currentActiveNodes = list(newActiveNodes) newActiveNodes = set() else: newActive = False return influenceSpread def flipCoin(probability): return np.random.random() < probability # 可视化传播过程 def visualizePropagation(G, seedNode, propProbability): pos = nx.spring_layout(G) # 选择布局算法 labels = {node: node for node in G.nodes()} # 节点标签为节点名 colors = ['r' if node in seedNode else 'b' for node in G.nodes()] # 种子节点为红色，其他节点为蓝色 plt.figure(figsize=(10,6)) nx.draw_networkx_nodes(G, pos, node_color=colors) nx.draw_networkx_edges(G, pos) nx.draw_networkx_labels(G, pos, labels) plt.title('Propagation Visualization') plt.show() # 示例用法 seedNode = [7,36,17] propProbability = 0.7 directedGraph = preprocess(G) influenceSpread = simulate(directedGraph, seedNode, propProbability) print("Influence Spread:", influenceSpread) visualizePropagation(directedGraph, seedNode, propProbability)修改这个代码使得输出图形节点之间间隔合理能够看清

你可以尝试修改nx.spring_layout()函数的参数，例如k，来调整节点之间的距离。这个参数控制着节点之间的斥力大小，较大的k值会使节点之间的距离增大，从而使得图形更容易观察。下面是修改后的代码示例： ...

import networkx as nx ModuleNotFoundError: No module named 'networkx'

您遇到的问题是导入networkx模块时出现了ModuleNotFoundError，这通常是由于缺少相应的依赖项导致的。根据您提供的引用内容，解决这个问题的方法有两种：方法一：通过命令行安装缺失的依赖项 1. 关闭解释器，打开...

ubuntu 中 import networkx as nx ModuleNotFoundError: No module named 'networkx'

在Ubuntu中，当出现"ModuleNotFoundError: No module named 'networkx'"错误时，通常表示没有安装networkx模块。要解决此问题，您可以通过以下步骤来安装networkx模块： 1. 打开终端。 2. 在终端中输入以下命令来...

import pandas as pd import networkx as nx import matplotlib.pyplot as plt df = pd.read_excel(r"C:\Users\li'yi'jie\Desktop\运筹学网络规划数据.xlsx") edges = [] for i in range(len(df)): edge = { "id": df.loc[i, "边的编号"], "tail": df.loc[i, "边的尾节点"], "head": df.loc[i, "边的头节点"], "length": df.loc[i, "长度"], "capacity": df.loc[i, "容量"] } edges.append(edge) plt.figure(figsize=(10,8)) G = nx.DiGraph() for edge in edges: G.add_edge(edge["tail"], edge["head"], weight=edge["length"]) all_pairs = dict(nx.all_pairs_dijkstra_path_length(G)) pos = nx.spring_layout(G) nx.draw(G, pos, with_labels=True) labels = nx.get_edge_attributes(G, "weight") nx.draw_networkx_edge_labels(G, pos, edge_labels=labels) plt.show()如何修改能使权重写在边旁而非边上？

import pandas as pd import networkx as nx import matplotlib.pyplot as plt df = pd.read_excel(r"C:\Users\li'yi'jie\Desktop\运筹学网络规划数据.xlsx") edges = [] for i in range(len(df)): edge = { "id": ...

帮我修改一下这段代码的错误import networkx as nx G = nx.DiGraph() start = [1, 3, 5, 7] to = [2, 4, 6, 8] for j in range(len(start)): G.add_edge(start[j], to[j]) nx.draw(G, with_lables=True)

import networkx as nx G = nx.DiGraph() start = [1, 3, 5, 7] to = [2, 4, 6, 8] for j in range(len(start)): G.add_edge(start[j], to[j]) nx.draw(G, with_labels=True) # 你在原来的代码中写成了...

AttributeError: module 'matplotlib.pyplot' has no attribute 'p1ot'

如果更新matplotlib后仍然出现这个错误，那么你可以尝试卸载并重新安装matplotlib和networkx。你可以使用以下命令来卸载matplotlib： shell pip uninstall --user matplotlib 然后你可以使用以下命令来安装...

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import networkx as nx import matplotlib.pyplot as plt # 创建图 G = nx.Graph()

代码解读，import networkx as nx import pandas as pd import matplotlib.pyplot as plt import numpy as np import scipy as sp

import networkx as nx

AttributeError: module 'matplotlib.pyplot' has no attribute 'add_subplot'

import networkx as nx ModuleNotFoundError: No module named 'networkx'

ubuntu 中 import networkx as nx ModuleNotFoundError: No module named 'networkx'

帮我修改一下这段代码的错误import networkx as nx G = nx.DiGraph() start = [1, 3, 5, 7] to = [2, 4, 6, 8] for j in range(len(start)): G.add_edge(start[j], to[j]) nx.draw(G, with_lables=True)

AttributeError: module 'matplotlib.pyplot' has no attribute 'p1ot'

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