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2016 Apr 22
0
subset by multiple letters condition
...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]]