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r - R：直接从网站读取 .DAT 文件时出错

问题描述

我正在尝试.DAT直接从网站读取文件并收到以下错误：

abdomen <- read.table("https://www2.stat.duke.edu/courses/Spring03/sta113/Data/Hand/abdomen.dat")

Error in file(file, "rt") : 
  cannot open the connection to 'https://www2.stat.duke.edu/courses/Spring03/sta113/Data/Hand/abdomen.dat'
In addition: Warning messages:
1: In eval(formal.args[[as.character(substitute(arg))]], envir = sys.frame(sysP)) :
  closing unused connection 4 (https://www2.stat.duke.edu/courses/Spring03/sta113/Data/Hand/abdomen.dat)
2: In file(file, "rt") :
  URL 'https://www2.stat.duke.edu/courses/Spring03/sta113/Data/Hand/abdomen.dat': status was 'Peer certificate cannot be authenticated with given CA certificates'

我还尝试了以下代码：

abdomen <- read.table(url("https://www2.stat.duke.edu/courses/Spring03/sta113/Data/Hand/abdomen.dat"))
Error in open.connection(file, "rt") : 
  cannot open the connection to 'https://www2.stat.duke.edu/courses/Spring03/sta113/Data/Hand/abdomen.dat'
In addition: Warning message:
In open.connection(file, "rt") :
  URL 'https://www2.stat.duke.edu/courses/Spring03/sta113/Data/Hand/abdomen.dat': status was 'Peer certificate cannot be authenticated with given CA certificates'

任何提示，请。

标签： rweburlread.table

解决方案

您很可能被（公司？）防火墙阻止。确保您的代理设置正常工作。

从我自己对类似问题的回答中窃取：

## get the proxy settings
system("netsh winhttp show proxy")
Sys.setenv(HTTP_PROXY = <the proxy from netsh>, HTTPS_PROXY = <the proxy from netsh>)

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