[英]How do I name file downloads in R using data from another column in dataframe?
I have a large dataset of unique file IDs and links to download the files.我有一个包含唯一文件 ID 和下载文件链接的大型数据集。 It looks like this:
它看起来像这样:
file_id <- c("id:fghjs12:ws8c7/syx", "id:f7gnsfu:7a6#*s", "id:dug:shxgcvu:6sh")
link <- c("https://www.dynare.org/wp-repo/dynarewp028.pdf", "https://www.dynare.org/wp-repo/dynarewp029.pdf", "https://www.dynare.org/wp-repo/dynarewp020.pdf")
df <- data.frame(file_id, link, stringsAsFactors = FALSE)
I want to download each file using the name of the handle.我想使用句柄的名称下载每个文件。 Some of the links are broken.
一些链接已损坏。 So I have the following loop to do the task but it's not working..
所以我有以下循环来完成任务,但它不工作..
download_documents <- function(url, file_id) {
tryCatch(
{download.file(url, paste0('~/Desktop/Dataset/files/', file_id))},
error = function(e) {NA},
warning = function(w) {NA})
}
Map(download_documents, df$link, df$file_id)
Does anyone know what I'm doing wrong or have a better solution?有谁知道我做错了什么或有更好的解决方案? Thanks in advance for your help!
在此先感谢您的帮助!
You can turn the file_id
to valid names using make.names
.您可以使用
make.names
将file_id
转换为有效名称。
Map(download_documents, df$link, make.names(df$file_id))
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