graphlab 学习

graphlab安装

graphlab目前支持python2.7 所以安装python最好先安装

import graphlab as gl
gl.get_dependencies()

Anaconda2 v4.0.0

安装方法点击

启动jupyter notebook[gl-env]

应用 新开页面表格

import graphlab

sf = graphlab.SFrame('goods_list.csv')
# print(sf)
# print(sf.head(4))
print(sf.show())

在本地开页面

import graphlab
graphlab.canvas.set_target('ipynb')
sf['ghP'].show(view='Categorical')

操作列数据

显示一列

计算平均值 最大值

sf['age'].mean()
sf['age'].max()

增加新列

sf['fullnam'] = sf['First Name'] + ' ' + sf['Last Name']

sf['age'] + 2

sf['age'] * sf['age']

应用apply函数来转换数据

sf['country']

def transform_country(country):
    if country == "USA":
        return 'United States'
    else:
        return country

transform_country('Barzil')

transform_country('USA')

sf['country'].apply(transform_country)  #转换了 还没有赋值回原数列

sf['country'] = sf['country'].apply(transform_country)

graphlab