Tries to download a PDF file using the digital objected identifier (DOI) link.
Uses ad hoc searches of journal HTML pages to detect candidate PDFs for
download. Downloads all candidate pdfs. If running downloader
in Windows, having "WindowsProxy = TRUE" will significantly improve
download success.
PDF_download(
DOI,
directory = getwd(),
theFileName = "temp",
validatePDF = TRUE,
quiet = FALSE,
WindowsProxy = FALSE
)A string of the DOI (digital object identifier) used to identify the source of a journal article PDF file(s).
A string of the location (directory) were downloaded PDF files are to be saved. Directory name must end with "\\".
Used to rename the downloaded file. No need to include extension ".pdf".
When "TRUE" will only save to files that are valid
PDF documents. When "FALSE" will save all candidate files, even if
they are not valid PDF formats.
When "FALSE" does not print to console download progress
and summary.
When TRUE significantly improves download success
for computers running Windows; when FALSE on a Windows based
computer, you may only be able to download 30 to 50 PDFs at a time before
a connection error occurs and halts all downloads (e.g.,
InternetOpenUrl failed error).
A string describing the download success. If unsuccessful, returns the type of error during the download attempt.