[EMAIL PROTECTED] wrote:
Hello, I was just wondering if you had found a solution? I am having
the same difficulty of converting pdf's into plain text documents in
R. I originally thought I could use the readLines() function, but as
you can see below that did not work.
Why the hell should it? It is designed to read *text* files. And what
you get below is exactly how your PDF file looks like if you read it as
text which it is NOT. Why do you not also go the readPDF() way (and yes,
it is not always possible nor reliable to go that way).
Uwe Ligges
R> my.destfile <- "C:\\Documents and Settings\\clair\\Desktop\\test\\r-
intro.pdf"
R> my.url <- "http://cran.r-project.org/doc/manuals/R-intro.pdf";
R> download.file(url = my.url, destfile=my.destfile, mode='wb')
R> txt <- readLines(my.destfile)
R> txt
[1]
"%PDF-1.4"
[2]
"%ÐÔÅØ"
[3] "1 0 obj
<<"
[4] "/Length 587
"
[5] "/Filter /
FlateDecode"
[6]
">>"
[7]
"stream"
[8] "[EMAIL PROTECTED]&ÎÁ±?\024tBL\020$ñ°ãd4›½*´.‰\002\001<øï·_•èÌf
\017’W¯_wÕ«îrðãc;Šòê`GæUŠOÛV×&³£øç¾ö\006ƒ¤Ê®\027[vïÖæ6ïWÛ7ñÑTÙÖvb
\030¯“uYt/N¼.³ó5·½êÿ¢¥=\025åS‚<b¸³¿G›�"
Warm Regards,
Clair
On 13 Nov, 15:10, Tony Breyal <[EMAIL PROTECTED]> wrote:
Dear R-Help,
I need to convert a set of '.pdf' files into an equivalent set of
'.txt' files. This is so that i can do some text mining on the
content.
In the latest R-News letter (http://cran.r-project.org/doc/Rnews/
Rnews_2008-2.pdf), the package 'tm' for text mining is mentioned. In
that lovely package, there is a function called 'readPDF()'. In order
to use this, ?readPDF says
"Note that this PDF reader needs both the tools pdftotext and
pdfinfo installed and accessable on your system."
These tools are available fromhttp://www.foolabs.com/xpdf/download.html
I am able to download this and use it easily from a dos window to
convert a pdf file into a txt file.
Question: how do i make these tools available to R, so that i can use
the readPDF() function?
Thank you in advance for any help, and I hope the above made sense.
Tony Breyal
###OS = Windows Vista Ultimate>> sessionInfo()
R version 2.8.0 (2008-10-20)
i386-pc-mingw32
locale:
LC_COLLATE=English_United Kingdom.1252;LC_CTYPE=English_United Kingdom.
1252;LC_MONETARY=English_United Kingdom.
1252;LC_NUMERIC=C;LC_TIME=English_United Kingdom.1252
attached base packages:
[1] grid stats graphics grDevices utils datasets
methods base
other attached packages:
[1] tm_0.3-1 XML_1.98-1 Snowball_0.0-3
RWeka_0.3-14 rJava_0.6-0 Matrix_0.999375-16
lattice_0.17-15 filehash_2.0
loaded via a namespace (and not attached):
[1] proxy_0.4-1
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PLEASE do read the posting guidehttp://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
______________________________________________
R-help@r-project.org mailing list
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
