【R>>down.file】从网页上下载文件

日常生活中有文件的链接，这时候需要保存到本地，可以直接下载，当然也可以用download.file()函数直接保存到本地。
直接来看下操作：

url <- "https://www.stats.govt.nz/assets/Uploads/Annual-enterprise-survey/Annual-enterprise-survey-2020-financial-year-provisional/Download-data/annual-enterprise-survey-2020-financial-year-provisional-csv.csv"

destfile <- "files/output.csv"

download.file(url,destfile)

• url：文件的来源，英文解释：a characterstring (or longer vector e.g., for the libcurl method) naming the URL of a resource to be downloaded.
• destfile：要保存的目标位置，a character string (or vector, see the url argument) with the file path where the downloaded file is to be saved. Tilde-expansion is performed.
  下载完成后就可以在目标路径看到output.csv文件了。
  参考链接：
  R Documentation：Download File from the Internet