将货车轨迹的经纬度信息转换为轨迹段的pathon代码
时间: 2023-12-10 10:04:16 浏览: 139
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。
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