Download zip file using getURL R

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Learn more. Unzip a raw file within memory in R Ask Question. Asked 6 years, 3 months ago. Active 6 years, 3 months ago. Viewed 2k times. Improve this question. Bamqf Bamqf 2, 7 7 gold badges 28 28 silver badges 45 45 bronze badges. I would be very surprised that the latency involved with writing and unzipping the file is slower than the initial download?

EZGraphs on Twitter writes: "Lots of online csvs are zipped. Is there a way to download, unzip the archive, and load the data to a data. Zip archives are actually more a 'filesystem' with content metadata etc.

See help unzip for details. So to do what you sketch out above you need to. So get the data provider to use that instead :. Much easier. If the zip archive contains a single file, you can use the bash command funzip , in conjuction with fread from the data. In cases where the archive contains multiple files, you can use tar instead to extract a specific file to stdout:. Here is an example that works for files which cannot be read in with the read. This example reads a.

To do this using data. Unfortunately, the link does not work anymore, so I used a link for another data set. I know this is possible in a single line since you can pass bash scripts to fread , but I am not sure how to download a.

I found that the following worked for me. I've also used unzip to list the file names within the zip file, so its not necessary to specify the file name s manually. How are we doing? Please help us improve Stack Overflow. Take our short survey.

Stack Overflow for Teams — Collaborate and share knowledge with a private group. In addition to the link location, we also need to specify where on our computer we want to save the data. The following R code illustrates how to define the path of the output directory:. Your Path The base R function download. Apply download. Have a look at the folder that you have specified as file destination.

You should find the downloaded data in csv format:. Figure 2: Downloaded csv File in Folder on Computer. Note: R allows for the download of any file format you want.

The function download. Support for method "libcurl" is optional on Windows: use capabilities "libcurl" to see if it is supported on your build. There is support for simultaneous downloads, so url and destfile can be character vectors of the same length greater than one but the method has to be specified explicitly and not via "auto". For methods "wget" and "curl" a system call is made to the tool given by method , and the respective program must be installed on your system and be in the search path for executables.

They will block all other activity on the R process until they complete: this may make a GUI unresponsive. It is used by available. The "wininet" method supports some redirections but not all. For method "libcurl" , messages will quote the endpoint of redirections. Most methods do not percent-encode special characters such as spaces in URLs see URLencode , but it seems the "wininet" method does.

The remaining details apply to the "internal" , "wininet" and "libcurl" methods only. The timeout for many parts of the transfer can be set by the option timeout which defaults to 60 seconds.