| import networkx as nx |
| import matplotlib.pyplot as plt |
| import random |
| import argparse |
| import os |
| import json |
|
|
|
|
| def generate_graph(num_nodes, num_edges): |
| |
| G = nx.Graph() |
| |
| |
| G.add_nodes_from(range(num_nodes)) |
| |
| |
| possible_edges = [(i, j) for i in range(num_nodes) for j in range(i+1, num_nodes)] |
| random_edges = random.sample(possible_edges, num_edges) |
| G.add_edges_from(random_edges) |
| |
| return G |
|
|
| def draw_graph(G, idx): |
|
|
| global file |
| |
| plt.figure(figsize=(12, 12)) |
| pos = nx.spring_layout(G) |
| nx.draw(G, pos, with_labels=False, node_color='lightblue', edge_color='gray', node_size=2000, font_size=15) |
| image_filename = f"{file}.png" |
| file += 1 |
| image_path = os.path.join(output_dir, image_filename) |
| plt.savefig(image_path) |
| plt.close() |
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|
| if __name__ == '__main__': |
| output_dir = os.path.join(os.getcwd(), "data") |
| if not os.path.exists(output_dir): |
| os.makedirs(output_dir) |
| |
| parser = argparse.ArgumentParser(description='Create a grid of circles and triangles.') |
| parser.add_argument( |
| '--num_images', |
| type=int, |
| help='Number of images to generate', |
| default=1 |
| ) |
| parser.add_argument( |
| '--num_sizes', |
| nargs='*', |
| type = int, |
| help='List of num of nodes', |
| default=[5] |
| ) |
| parser.add_argument( |
| '--file', |
| type=int, |
| help='Starting file number', |
| default=1 |
| ) |
| args = parser.parse_args() |
| file = args.file |
| num_nodes = args.num_sizes |
| num_images = args.num_images |
| append = (file != 1) |
| data = [] |
| |
| for num_node in num_nodes: |
| for i in range(num_images): |
| if num_node == 1: |
| num_edges = 0 |
| else: |
| min_edge = min((num_node*(num_node-1))//2, (num_node+5)) |
| num_edges = random.randint(num_node-1, min_edge) |
| G = generate_graph(num_node, num_edges) |
| draw_graph(G, idx=i) |
| data.append({ |
| "id": f"{file-1}.png", |
| "num_nodes": num_node, |
| "num_edges": num_edges |
| }) |
| if append: |
| with open(os.path.join(os.getcwd() , "data.json"), "r") as f: |
| old_data = json.load(f) |
| old_data.extend(data) |
| with open(os.path.join(os.getcwd() , "data.json"), "w") as f: |
| json.dump(old_data, f, indent=2) |
| else: |
| with open(os.path.join(os.getcwd() , "data.json"), "w") as f: |
| json.dump(data, f, indent=2) |
|
|
