分析靠近后向挡墙的距离

import os
import re
import sys
import matplotlib.pyplot as plt
from datetime import datetimedef process_distance_data(file_path):distances = []timestamps = []try:with open(file_path, 'r', encoding='utf-8', errors='ignore') as file:for line in file:match = re.search(r'\[(\d{4}-\d{2}-\d{2}),(\d{2}:\d{2}:\d{2}\.\d{3})\]-距离后向挡墙距离([\d.]+) 完整度:([\d.]+)', line)if match:date_str = match.group(1)time_str = match.group(2)timestamp_str = f"{date_str},{time_str}"timestamp = datetime.strptime(timestamp_str, '%Y-%m-%d,%H:%M:%S.%f')distance_str = match.group(3)distance = float(distance_str) if distance_str != "340282346638528859811704183484516925440" else 80if distance <= 80:distances.append(distance)timestamps.append(timestamp)except FileNotFoundError:print(f"Error: File '{file_path}' not found.")except Exception as e:print(f"Error: {e}")return distances, timestampsdef visualize_distances(distances, timestamps):plt.scatter(timestamps, distances, color='red', label='Data Points')  # 红色点plt.plot(timestamps, distances, color='blue', label='Line Plot')  # 蓝色折线plt.title('Distance from Rear Wall')plt.xlabel('Timestamp')plt.ylabel('Distance')plt.xticks(rotation=45)plt.legend()  # 添加图例plt.tight_layout()plt.show()def export_distances_to_txt(distances, output_file):with open(output_file, 'w') as file:for distance in distances:file.write(f"{distance}\n")print(f"Distances exported to {output_file}")if __name__ == "__main__":if len(sys.argv) != 2:print("Usage: python script.py <file_path>")sys.exit(1)file_path = sys.argv[1]output_file = "distances.txt"if os.path.exists(file_path):distances, timestamps = process_distance_data(file_path)visualize_distances(distances, timestamps)# No need to export to txt file since you didn't provide the export_distances_to_txt functionelse:print("File not found.")