regular expressions in R
To be correct for the regular expression, it should be: dir(pattern = "\\.(txt|doc)$") The form dir(pattern="*.txt") will match 'txt' appearing anywhere in the name; this looks like the argument you would have used to "Sys.glob" which is a UNIX style file name match and not a regular expression. "." matches any character unless you escape it to mean a 'period'. On Wed, Dec 21, 2011 at 11:11 AM, R. Michael Weylandt
<michael.weylandt at gmail.com> wrote:
Do you wish to include .docx files as well or just .doc? Michael On Wed, Dec 21, 2011 at 10:04 AM, Alaios <alaios at yahoo.com> wrote:
Dear all I would like to ask from dir function in R (?dir) to give me only the files that end with .txt or .doc. The dir functions supports the use of patterns (is not that regular expressions) for doing that. ? print(dir(i,full.names=TRUE,pattern=.....)) Could you please help me compose such a pattern? B.R Alex ? ? ? ?[[alternative HTML version deleted]]
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