You may investigate a solution based on regular expressions. Some tutorials to help:
http://www.regular-expressions.info/rlanguage.html http://www.endmemo.com/program/R/grep.php http://biostat.mc.vanderbilt.edu/wiki/pub/Main/SvetlanaEdenRFiles/regExprTalk.pdf https://rstudio-pubs-static.s3.amazonaws.com/74603_76cd14d5983f47408fdf0b323550b846.html http://stat545.com/block022_regular-expression.html https://www.youtube.com/watch?v=q8SzNKib5-4 -- Best, GG [[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.
