You need to learn regular expression patterns... there are lots of languages that use them, and tutorial websites that teach them to you. They are not the same as filename globbing patterns, and list.files uses regex because they are much more flexible.
Here is an example: list.files( pattern = "[135]\\.csv$" ) On April 3, 2022 10:28:04 PM PDT, CHANCE CARTER <chance...@comcast.net> wrote: >I have a selection of data files saved as: >File1.csv >File2.csv >File3.csv >File4.csv >. >. >. >File100.csv > >I need to extract the odd numbered files. >I have tried using the list.files function but I do not understand how to set >pattern ="???" in order to extract the odd file names > >list.files(path, pattern= "????????",... ) > > [[alternative HTML version deleted]] > >______________________________________________ >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. -- Sent from my phone. Please excuse my brevity. ______________________________________________ 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.
