如何利用 folium 软件包绘制 Google 地图?
Folium 是一个非常强大的 Python 库,可让你创建多种小册子地图。由于小册子/folium 地图是交互式的,因此它们非常适合制作仪表板。
安装
使用 pip 安装 folium 非常容易−
$pip install folium
就像你从下面的屏幕截图中看到的,你只需要在控制台/cmd 中输入上面的命令,pip 就会安装 folium 以及 Python 安装所需的依赖项。
基本地图
#Import library import folium #Uses lat then lon. & zoomlevel 4.The bigger the zoom number, the closer in you get. mapOBJ = folium.Map(location=[17.3616, 78.4747], zoom_start = 4, tiles = 'Stamen Terrain') # save method of Map object, will create a map mapOBJ.save('map2.html')
输出
案例 2:GeoJson
import folium import os from folium import features import numpy as np import pandas as pd N = 1000 lons = +5 - np.random.normal(size=N) lats = 48 - np.random.normal(size=N) data = { 'type': 'FeatureCollection', 'features': [ { 'type': 'Feature', 'geometry': { 'type': 'MultiPoint', 'coordinates': [[lon, lat] for (lat, lon) in zip(lats, lons)], }, 'properties': {'prop0': 'value0'} }, ], } m = folium.Map([17.3616, 78.4747], zoom_start = 10) m.add_child(features.GeoJson(data)) m.save('Features.html')
输出
案例 3:标记、图标、弹出窗口
import folium from folium import features m = folium.Map([17.3616, 78.4747], zoom_start = 15) mk = features.Marker([17.3616, 78.4747]) pp = folium.Popup('Charminar') ic = features.Icon(color='red') mk.add_child(ic) mk.add_child(pp) m.add_child(mk) m.save('Features_1.html')
输出
案例 4
我使用了一个新的库 - vincent,Vincent 获取 Python 数据结构(元组、列表、字典和 Pandas 数据帧)并将它们转换为 Vega 可视化语法。
使用 pip,安装 vincent 非常容易。
$pip install vincent
C:\WINDOWS\system32>pip install vincent Collecting vincent Downloading https://files.pythonhosted.org/packages/11/bf/a12ecaa21a2e376a16de67e09f64a38a4acd95e04e5dc35ad2f13a6f0bfd/vincent-0.4.4.tar.gz Requirement already satisfied: pandas in c:\python\python361\lib\site-packages (from vincent) (0.20.2) Requirement already satisfied: pytz >= 2011k in c:\python\python361\lib\site-packages (from pandas -> vincent) (2017.2) Requirement already satisfied: python-dateutil >= 2 in c:\python\python361\lib\site-packages (from pandas -> vincent) (2.6.0) Requirement already satisfied: numpy >= 1.7.0 in c:\python\python361\lib\site-packages (from pandas -> vincent) (1.16.0) Requirement already satisfied: six >= 1.5 in c:\python\python361\lib\site-packages (from python-dateutil >= 2 -> pandas -> vincent) (1.10.0) Building wheels for collected packages: vincent Running setup.py bdist_wheel for vincent ... done Stored in directory: C:\Users\rajesh\AppData\Local\pip\Cache\wheels\4c\0d\8a\65f34c765c6094a71cce3e42a49a26533eef61695e9b505f03 Successfully built vincent Installing collected packages: vincent Successfully installed vincent-0.4.4
import folium from folium import features import numpy as np import json import vincent N = 100 multi_iter2 = { 'x': np.random.uniform(size=(N,)), 'y': np.random.uniform(size=(N,)), } scatter = vincent.Scatter(multi_iter2, iter_idx='x', height=100, width=200) data = json.loads(scatter.to_json()) m = folium.Map([17.3616, 78.4747], zoom_start=10) mk = features.Marker([17.3616, 78.4747]) p = folium.Popup('Charminar') v = features.Vega(data, width='100%', height='100%') mk.add_child(p) p.add_child(v) m.add_child(mk) m.save('Features_2.html')
输出
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