把{"metaInfo":{"apiDescription":"hmiserver api","currentTime":"20200409T213249428Z"},"payloadItem":{"routePath":[[{"jobModel":0,"kappa":0.0,"relativeTime":0.0,"s":0.0,"theta":-0.033711594924239571,"v":4.1699999999999999,"x":268023.5661949619,"y":3939971.0870088288},{"jobModel":0,"kappa":0.0,"relativeTime":0.10000000000000001,"s":0.41700000000000004,"theta":-0.033711594924239571,"v":4.1699999999999999,"x":268023.98295803001,"y":3939971.0729537564}],[{"jobModel":0,"kappa":0.0,"relativeTime":0.0,"s":0.0,"theta":-0.033711594924239571,"v":4.1699999999999999,"x":268023.5661949619,"y":3939971.0870088288},{"jobModel":0,"kappa":0.0,"relativeTime":0.10000000000000001,"s":0.41700000000000004,"theta":-0.033711594924239571,"v":4.1699999999999999,"x":268023.98295803001,"y":3939971.0729537564}]]}}这种格式文件中的x,y坐标提取出来用pyplot画成路径图的代码怎么写

你可以使用Python的matplotlib库来绘制路径图。下面是一个示例代码，可以从给定的文件中提取x和y坐标，并使用pyplot绘制路径图：

import json
import matplotlib.pyplot as plt

# 读取文件
with open('your_file.json', 'r') as f:
    data = json.load(f)

# 提取x和y坐标
x_coords = []
y_coords = []

route_path = data['payloadItem']['routePath']
for path in route_path:
    for point in path:
        x_coords.append(point['x'])
        y_coords.append(point['y'])

# 绘制路径图
plt.plot(x_coords, y_coords)
plt.xlabel('X')
plt.ylabel('Y')
plt.title('Path')
plt.show()

请将`your_file.json`替换为包含路径数据的文件的路径。运行此代码将生成一个路径图，其中x轴表示x坐标，y轴表示y坐标。