在 R 中下载 Kaggle zip 文件 [英] Downloading Kaggle zip files in R

问题描述

我试图直接从我的 R 代码中的 Kaggle 空间下载 zip 文件.不幸的是，它并不正确.这是发生的事情:

I'm attempting to download zip files directly from the Kaggle space in my R code itself. Unfortunately, it's not working out right. Here's what's happening:

对于位于 https://www.kaggle.com/的旧金山犯罪数据集c/sf-犯罪/数据

取第一个数据集:test.csv.zip:https://www.kaggle.com/c/sf-crime/download/test.csv.zip

Take the first data set: test.csv.zip: https://www.kaggle.com/c/sf-crime/download/test.csv.zip

我使用的是 R 代码:

I'm using R code:

download.file(url='https://www.kaggle.com/c/sf-crime/download/test.csv.zip', destfile = 'test.zip',method = 'curl')

代替原来的 18.75MB 文件，R 只下载一个 183 字节的文件.

In place of the original 18.75MB file, R only downloads a 183byte file.

会话输出:

% Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0100   183  100   183    0     0    665      0 --:--:-- --:--:-- --:--:--   667

我做错了什么?

提前致谢，拉胡尔

推荐答案

library(RCurl)

#Set your browsing links 
loginurl = "https://www.kaggle.com/account/login"
dataurl  = "https://www.kaggle.com/c/titanic/download/train.csv"

#Set user account data and agent
pars=list(
  UserName="[e-mail]",
  Password="-----"
)
agent="Mozilla/5.0" #or whatever 

#Set RCurl pars
curl = getCurlHandle()
curlSetOpt(cookiejar="cookies.txt",  useragent = agent, followlocation = TRUE, curl=curl)
#Also if you do not need to read the cookies. 
#curlSetOpt(  cookiejar="", useragent = agent, followlocation = TRUE, curl=curl)

#Post login form
welcome=postForm(loginurl, .params = pars, curl=curl)

bdown=function(url, file, curl){
  f = CFILE(file, mode="wb")
  curlPerform(url = url, writedata = f@ref, noprogress=FALSE, curl = curl)
  close(f)
}

ret = bdown(dataurl, "c:\\test.csv",curl)

rm(curl)
gc()

仅供参考:像网络客户端一样使用 RCurl.

FYI : use RCurl like a web client.

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