M语言简单示例--网页数据抓取

1.获取网址； www.boxofficemojo.com/monthly/?yr=2015&month=12

2.启动POWER QUERY 获取网页数据，选择正确表

3.适当处理一下

4.点击视图，选择高级编辑器

5.写入函数；修改原网址的参数即可，其他用引号引起，参数和引号使用&符号拼接

let TopMovies=(YearNum,MonthNum) =>

let

    源 = Web.Page(Web.Contents(" http://www.boxofficemojo.com/monthly/?view=releasedate&chart=&yr="&Number.ToText(YearNum)&"&month="&Number.ToText(MonthNum ))),

    Data0 = 源{0}[Data],

    更改的类型 = Table.TransformColumnTypes(Data0,{{"Rank", type text}, {"Movie Title (click to view)", type text}, {"Studio", type text}, {"Total Gross /Theaters", type text}, {"Total Gross /Theaters2", type text}, {"Opening /Theaters", type text}, {"Opening /Theaters2", type text}, {"Open", type text}, {"Close", type text}}),

    删除的底部行 = Table.RemoveLastN(更改的类型,3)

in

    删除的底部行

in  TopMovies

6.修改函数名称

7.创建一个简单表格如下

8.启动POWER QUERY 

9.添加列，自定义列

10.使用函数

= fnGetTopMovies1( [Year01],[ Month01 ] )

11.关闭并上载