Xiao Nan made a useful table of the R scraping toolkit. Source: Xiao Nan, road2stat. Using a tool like R has another great advantage: unlike manually downloading a file, you can easily re-use and share your work.
Having some R code instead of an Excel file means your analysis is reproducible and you may be able to adapt it for future projects or if an updated dataset was released. If you need help you can find support via stackoverflow and the R-help mailing list. Data publishing and use Search and discovery Analysing or using data without software is incredibly cumbersome if not impossible. Data on the web comes in several modes, for example: files that you can download APIs content such as HTML tables custom data browsers and more.
I got an URL and figured out how to download it. But the downloaded file can't be previewed because it is 'damaged, corrupted, or is too big'. If I try your code it looks like the image is downloaded. However, when opened with windows image viewer it also says it is corrupt. The reason for this is that you don't have specified the mode in the download. After downloading the image, you can use base R to open the file using your default image viewer program like this:.
Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. Ask Question. In my case I want all the jpeg files listed, so I create a regular expression to pull just these links out and give me a vector of URLs.
I map out the link strings using gregexpr and extract them using regmatches. Let me break down the regular expression? First, recognize that denote groups of characters, so. The special pattern? Simple Mass Downloader is a pretty good option for Firefox since the classic old extensions no longer work.
It also has some useful features like being able to add downloads from multiple tabs at once and add automatic folders to directly download files of certain types into specific folders. The checkbox at the top will select all files at once while the extensions or text filter boxes at the bottom will filter the list by whatever characters are entered.
Files can be added to a queue or downloaded directly with the buttons at the bottom right. Download Simple Mass Downloader.
Download DownloadStar. To download files from a folder using something other than browser extensions or download managers, try the methods on Page 2. I would like to download a number of files that can be found under a http link which is always the same — just the number at the end changes. VWget does work, I am using it right now to download from a folder deep within a hos with no index. You do have to use the right settings, it took a couple of goes, the first 2 times it tried to download most of the domain lol.
Not multi threading yet if ever , but still a very good option. Though some dislike its revamped Dropbox desktop app, I appreciate the extra features it puts within reach, such as the ability to quickly create G Suite files.
That said, Box, Google Drive, and Microsoft OneDrive are all great choices for most users, depending upon your needs and budget. It does not download subdirectories after following your instrusctions. Thank you a LOT. You should check it out. I am trying to download multiple files from a facebook group.
I only need the svg files. What is my best option? Remove —no-directories to completely crawl and download everything matching your criteria zip files here starting from the root directory.
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