On 08/05/2015 11:52 AM, Greg Donald wrote:
I'm using RCurl with postForm() to post to a URL that responds with a PDF. I cannot figure out how to write the resulting PDF data to a file without corruption.result = postForm(url, binary=TRUE) Both this: capture.output(result, file='/tmp/export.pdf') and this: f = file('/tmp/export.pdf', 'wb') write(result, f) close(f) result in a corrupted PDF. I also tried postForm without binary=TRUE but that halts execution with an "embedded nul in string" error. I also tried writeBin() but that complains about my result not being a vector.
I think that is because the value returned from postForm has an attribute; remove it by casting the return to a vector
fl <- tempfile(fileext=".pdf") writeBin(as.vector(postForm(url, binary=TRUE)), fl) The httr package might also be a good bet writeBin(content(POST(url)), fl)
I can use curl on the command line and this works fine, but I need to get this working in R. Any help would be greatly appreciated. Thanks. -- Greg Donald ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
-- Computational Biology / Fred Hutchinson Cancer Research Center 1100 Fairview Ave. N. PO Box 19024 Seattle, WA 98109 Location: Arnold Building M1 B861 Phone: (206) 667-2793 ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
