将货车轨迹的经纬度信息转换为轨迹段的pathon代码

以下是一个简单的Python代码示例，用于将货车轨迹的经纬度信息转换为轨迹段：

import math

# 转换经纬度为距离的函数
def distance(lat1, lon1, lat2, lon2):
    R = 6371  # 地球半径，单位为千米
    dLat = math.radians(lat2 - lat1)
    dLon = math.radians(lon2 - lon1)
    lat1 = math.radians(lat1)
    lat2 = math.radians(lat2)
    a = math.sin(dLat / 2) * math.sin(dLat / 2) + \
        math.sin(dLon / 2) * math.sin(dLon / 2) * math.cos(lat1) * math.cos(lat2)
    c = 2 * math.atan2(math.sqrt(a), math.sqrt(1 - a))
    d = R * c
    return d

# 将经纬度信息转换为轨迹段的函数
def get_track_segments(locations, max_segment_distance):
    segments = []
    segment = [locations[0]]
    for i in range(1, len(locations)):
        distance_between_points = distance(locations[i-1][0], locations[i-1][1], locations[i][0], locations[i][1])
        if distance_between_points > max_segment_distance:
            segments.append(segment)
            segment = []
        segment.append(locations[i])
    segments.append(segment)
    return segments

# 示例用法
locations = [(39.984702,116.318417), (39.984683,116.31845), (39.984686,116.318417), (39.984688,116.318385)]
max_segment_distance = 0.05  # 最大轨迹段距离，单位为千米
segments = get_track_segments(locations, max_segment_distance)
print(segments)

此代码将货车轨迹的经纬度信息列表作为输入，并将其转换为轨迹段列表。`distance`函数用于将经纬度转换为距离。`get_track_segments`函数将轨迹分成若干条轨迹段，每个轨迹段长度不超过`max_segment_distance`。该函数返回一个包含轨迹段列表的列表。在本示例中，`locations`列表包含了货车轨迹的经纬度信息，`max_segment_distance`被设置为0.05千米（50米），轨迹被分成了两个轨迹段，并输出了这两个轨迹段。