使用 download.file() 从 HTTPS 下载文件 [英] Download a file from HTTPS using download.file()

问题描述

我想使用 download.file() 将在线数据读取到 R，如下所示.

I would like to read online data to R using download.file() as shown below.

URL <- "https://d396qusza40orc.cloudfront.net/getdata%2Fdata%2Fss06hid.csv"
download.file(URL, destfile = "./data/data.csv", method="curl")

有人建议我添加行 setInternet2(TRUE)，但它仍然不起作用.

Someone suggested to me that I add the line setInternet2(TRUE), but it still doesn't work.

我得到的错误是:

Warning messages:
1: running command 'curl  "https://d396qusza40orc.cloudfront.net/getdata%2Fdata%2Fss06hid.csv"  -o "./data/data.csv"' had status 127 
2: In download.file(URL, destfile = "./data/data.csv", method = "curl",  :
  download had nonzero exit status

感谢您的帮助.

推荐答案

尝试 RCurl 包可能是最简单的方法.安装软件包并尝试以下操作:

It might be easiest to try the RCurl package. Install the package and try the following:

# install.packages("RCurl")
library(RCurl)
URL <- "https://d396qusza40orc.cloudfront.net/getdata%2Fdata%2Fss06hid.csv"
x <- getURL(URL)
## Or 
## x <- getURL(URL, ssl.verifypeer = FALSE)
out <- read.csv(textConnection(x))
head(out[1:6])
#   RT SERIALNO DIVISION PUMA REGION ST
# 1  H      186        8  700      4 16
# 2  H      306        8  700      4 16
# 3  H      395        8  100      4 16
# 4  H      506        8  700      4 16
# 5  H      835        8  800      4 16
# 6  H      989        8  700      4 16
dim(out)
# [1] 6496  188

download.file("https://d396qusza40orc.cloudfront.net/getdata%2Fdata%2Fss06hid.csv",destfile="reviews.csv",method="libcurl")

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