Question

我试图从书籍＃34; Practical Data Science Cookbook＆＃34; 代码如下：

year <- 2013

#Acquire offense data
  url <- paste("http://sports.yahoo.com/nfl/stats/byteam?  group=Offense&cat=Total&conference=NFL&year=season_",
         year,"&sort=530&old_category=Total&old_group=Offense")

offense <- readHTMLTable(url, encoding = "UTF-8", colClasses="character")[[7]]

并收到错误：

Error in UseMethod("xmlNamespaceDefinitions") : 
 no applicable method for 'xmlNamespaceDefinitions' applied to an object of class "NULL"

请帮忙

Answer 1

解决问题需要配置http代理。在Windows桌面上编辑R-Studio快捷方式，在R-Studio名称后添加代理定义

 http_proxy=http://user_id:passwod@your_proxy:your_port/

来源：Proxy settings for R

R - 从HTML表中读取数据

1 个答案: