使用 pandas 数据框中的城市名称将多个标记添加到 folium 地图

Question

我正在尝试使用 folium 地图可视化数据，我必须将所有芬兰城市名称绘制到地图上。我尝试使用 pandas 数据框，因为我所有的数据都是 csv 格式。这是我到目前为止尝试过的代码。

import folium
from folium import plugins
import ipywidgets
import geocoder
import geopy
import numpy as np
import pandas as pd
from vega_datasets import data as vds

m = folium.Map(location=[65,26], zoom_start=5)

# map
map_layer_control = folium.Map(location=[65, 26], zoom_start=5)

# add tiles to map
folium.raster_layers.TileLayer('Open Street Map').add_to(map_layer_control)
folium.raster_layers.TileLayer('Stamen Terrain').add_to(map_layer_control)
folium.raster_layers.TileLayer('Stamen Toner').add_to(map_layer_control)
folium.raster_layers.TileLayer('Stamen Watercolor').add_to(map_layer_control)
folium.raster_layers.TileLayer('CartoDB Positron').add_to(map_layer_control)
folium.raster_layers.TileLayer('CartoDB Dark_Matter').add_to(map_layer_control)

# add layer control to show different maps
folium.LayerControl().add_to(map_layer_control)

# display map
map_layer_control
list = {'REGION': ['Kajaani','Lappeenranta','Pudasjärvi'],
       'CUSTOMERS':['7','4','64']}

list = pd.DataFrame(list)

# geocode address and place marker on map

# map
map_zoo = folium.Map(location=[65,26], zoom_start=4)

# get location information for address
for i in range(0,len(list)):
    address = geocoder.osm(list['REGION'])

# address latitude and longitude
address_latlng = [address.lat, address.lng]

# add marker to map
folium.Marker(address_latlng, popup='INFO', tooltip='Click for more information!').add_to(map_zoo)

# display map
map_zoo

However this code only adds a marker to the last city 'Pudasjärvi'

Answer 1

您可以使用 geopy 获取坐标，然后使用循环将标记添加到您的地图：

import folium
from geopy.geocoders import Nominatim
import pandas as pd

geolocator = Nominatim(user_agent="example")

l = {'REGION': ['Kajaani','Lappeenranta','Pudasjärvi'],
     'CUSTOMERS':['7','4','64']}

l['COORDS'] = []
for k in l['REGION']:
    loc = geolocator.geocode(k).raw
    l['COORDS'].append((loc['lat'], loc['lon']))

df = pd.DataFrame(l)

map_zoo = folium.Map(location=[65,26], zoom_start=4)

for i,r in df.iterrows():
    folium.Marker(location=r['COORDS'],
                  popup = r['REGION'],
                  tooltip='Click for more information!').add_to(map_zoo)
map_zoo

你得到：

使用 pandas 数据框中的城市名称将多个标记添加到 folium 地图

Adding multiple markers to a folium map using city names from pandas dataframe

python

dataframe

python-3.x

pandas

folium