# get the first 200 crimes in the cdata limit = 200 data = cdata.iloc[0:limit, :] # Instantiate a feature group for the incidents in the dataframe incidents = folium.map.FeatureGroup() # Loop through the 200 crimes and add each to the incidents feature group for lat, lng, in zip(cdata.Y, data.X): incidents.add_child( folium.CircleMarker( [lat, lng], radius=7, # define how big you want the circle markers to be color='yellow', fill=True, fill_color='red', fill_opacity=0.4 ) )
san_map.add_child(incidents)
img
统计区域犯罪总数
from folium import plugins
# let's start again with a clean copy of the map of San Francisco san_map = folium.Map(location=[37.77, -122.42], zoom_start=12,width='50%',height='50%')
# instantiate a mark cluster object for the incidents in the dataframe incidents = plugins.MarkerCluster().add_to(san_map)
# loop through the dataframe and add each data point to the mark cluster for lat, lng, label, in zip(data.Y, data.X, cdata.Category): folium.Marker( location=[lat, lng], icon=None, popup=label, ).add_to(incidents)
# add incidents to map san_map.add_child(incidents)
>>> from jnius import autoclass
>>> autoclass('java.lang.System').out.println('Hello world')
Hello world
>>> Stack = autoclass('java.util.Stack')
>>> stack = Stack()
>>> stack.push('hello')
>>> stack.push('world')
>>> print(stack.pop())
world
>>> print(stack.pop())
hello
当你引入类后，你只需要按 Java 的函数操作即可，如上述代码中的 push 和 pop 函数。
最令人惊喜的是，你还能在安卓系统中利用这个模块使用Python调用Java类：
from time import sleep
from jnius import autoclass
Hardware = autoclass('org.renpy.android.Hardware')
print('DPI is', Hardware.getDPI())
Hardware.accelerometerEnable(True)
for x in xrange(20):
print(Hardware.accelerometerReading())
sleep(.1)
# 使用 NLP 解析
article.nlp()
# 获取文章关键词
article.keywords
# ['New Years', 'resolution', ...]
# 获取文章摘要
article.summary
# 'The study shows that 93% of people ...'
你看，这个工具不无敌吗？它还能提取某个网站的所有新闻文章，比如我想提取CNN的新闻文章：
import newspaper
cnn_paper = newspaper.build('http://cnn.com')
for article in cnn_paper.articles:
print(article.url)
# http://www.cnn.com/2013/11/27/justice/tucson-arizona-captive-girls/
# http://www.cnn.com/2013/12/11/us/texas-teen-dwi-wreck/index.html
在此之上，你还能拿到CNN的其他新闻门户分类：
for category in cnn_paper.category_urls():
print(category)
# http://lifestyle.cnn.com
# http://cnn.com/world
# http://tech.cnn.com
# ...
input code full name
ar Arabic
be Belarusian
bg Bulgarian
da Danish
de German
el Greek
en English
es Spanish
et Estonian
fa Persian
fi Finnish
fr French
he Hebrew
hi Hindi
hr Croatian
hu Hungarian
id Indonesian
it Italian
ja Japanese
ko Korean
lt Lithuanian
mk Macedonian
nb Norwegian (Bokmål)
nl Dutch
no Norwegian
pl Polish
pt Portuguese
ro Romanian
ru Russian
sl Slovenian
sr Serbian
sv Swedish
sw Swahili
th Thai
tr Turkish
uk Ukrainian
vi Vietnamese
zh Chinese
