我一直在使用Folium Choropleth地图制作一张显示旧金山不同社区犯罪率的地图。
我正在使用的geojson文件是: https://cocl.us/sanfran_geojson,我将其保存为“数据”
我正在使用的数据来自: https://cocl.us/sanfran_crime_dataset,我将其保存为“ cdata”。
我的代码如下;
cdata.rename(columns={'PdDistrict':'Neighbourhood'}, inplace=True)
neighbourhood = cdata.groupby(['Neighbourhood']).size().reset_index(name='Count')
获得:
Neighbourhood Count
0 BAYVIEW 14303
1 CENTRAL 17666
2 INGLESIDE 11594
3 MISSION 19503
4 NORTHERN 20100
5 PARK 8699
6 RICHMOND 8922
7 SOUTHERN 28445
8 TARAVAL 11325
9 TENDERLOIN 9942
然后我用:
sanfran = folium.Map(location=[37.7749, -122.4194], zoom_start = 12)
sanfran.choropleth(
geo_data=dat,
name='choropleth',
data=neighbourhood,
columns=['Neighbourhood', 'Count'],
key_on='properties.DISTRICT',
fill_color='YlOrRd',
fill_opacity = 0.7,
line_opacity=0.2,
legend_name='Crime Rate in San Francisco')
运行sanfran.choropleth代码时,出现以下错误:
C:\ProgramData\Anaconda3\lib\site-packages\folium\folium.py:432: FutureWarning: The choropleth method has been deprecated. Instead use the new Choropleth class, which has the same arguments. See the example notebook 'GeoJSON_and_choropleth' for how to do this.
FutureWarning
然后,如果我只是键入“ sanfran”并运行代码,我将得到:
unhashable type: 'list'
非常感谢您的帮助,谢谢!
答案 0 :(得分:0)
语法有所更改。
在大叶上以大写字母“ C”调用Choropleth,并通过链“ add_to(map)”方法传递地图名称,就像这样
folium.Choropleth(all your arguments as the old method).add_to(map)
选中此链接,然后向下滚动至Choropleth地图上的部分以获取详细信息。 https://python-visualization.github.io/folium/quickstart.html#Getting-Started
答案 1 :(得分:0)
如果要运行并创建地图,则应遵循folium的新语法。 您的代码应如下所示:
sanfran = folium.Map(location=[37.7749, -122.4194], zoom_start=12)
folium.Choropleth(
geo_data=dat,
name='choropleth',
data=neighbourhood,
columns=['Neighbourhood', 'Count'],
key_on='properties.DISTRICT',
fill_color='YlOrRd',
fill_opacity=0.7,
line_opacity=0.2,
legend_name='Crime Rate in San Francisco').add_to(sanfran)
sanfran.save('outfile.html')