方位角，画一条线

Question

我正在尝试使用 folium 在地图上绘制给定坐标的方位角。我是 python 的新手，我迷路了。 objective 是获取一个坐标和一个度数，然后绘制到地图上。我正在尝试使用 folium，但它不需要是 folium。

import folium

# criar o objeto do mapa
m = folium.Map(location=[37.0431575, -7.8449655], zoom_start=14)

# Texto que vai aparecer no marcador
tootip = "Célula em Olhão"

folium.CircleMarker(
    location=[37.040893, -7.83197],
    radius=4,
    popup="célula",
).add_to(m)

# posicao = folium.RegularPolygonMarker(
#     location=[37.040893, -7.83197],
#     fill_color='blue',
#     number_of_sides=3,
#     radius=10,
#     rotation=45).add_to(m)
# I TRIED WITH A TRIANGULE BUT I COULDN'T UNDERSTANT WICH PART WAS 
# POINTING AT THE DESIRED DIRECTION

m.save("mapa.html")

如何画一条从圆度 45º 开始的线？线的大小并不重要，它只需要可见即可。谢谢你

Answer 1

是这样的吗？

借助 math 和一些技巧

import folium
import math

# criar o objeto do mapa
m = folium.Map(location=[37.0431575, -7.8449655], zoom_start=14)

# Texto que vai aparecer no marcador
tootip = "Célula em Olhão"

origin_point = [37.040893, -7.83197]

folium.CircleMarker(
    location=origin_point,
    radius=4,
    popup="célula",
).add_to(m)

length = .01
angle = 45

end_lat = origin_point[0] + length * math.sin(math.radians(angle))
end_lon = origin_point[1] + length * math.cos(math.radians(angle))

folium.PolyLine([origin_point, [end_lat, end_lon]]).add_to(m)

m

方位角，画一条线

Azimuth, Draw a line

python

python-3.x

folium