当我运行这段代码Matplotlib情节是没有出现
import pandas as pd
import numpy as np
def add_prop(group):
births = group.births.astype(float)
group['prop'] = births/births.sum()
return group
pieces = []
columns = ['name', 'sex', 'births']
for year in range(1880, 2012):
path = 'yob%d.txt' % year
frame = pd.read_csv(path, names = columns)
frame['year'] = year
pieces.append(frame)
names = pd.concat(pieces, ignore_index = True)
total_births = names.pivot_table('births', rows = 'year', cols = 'sex', aggfunc = sum)
total_births.plot(title = 'Total Births by sex and year')
我没有得到任何情节。这是来自Wes McKinney关于使用Python进行数据分析的书。 任何人都可以指向正确的方向吗?
如果您使用IPython的(!你应该是),你可以使用pylab标志:'IPython中--pylab' – 2013-05-13 17:47:30
谢谢,安迪。我是。 – ncmathsadist 2013-05-13 18:32:35