[R] turning comma separated string from multiple choices into flags
P.Dalgaard at biostat.ku.dk
Mon Sep 29 17:32:30 CEST 2008
June Kim wrote:
> Thank you. The misspelling of Harvard wasn't intended. The data are
> spelled consistently.
OK. One other potential problem: If the strings are substrings of
eachother (as in "Science" and "Statistical Science") then you may need
And I misremembered: It is probably better to use regexpr(....) != -1
than grep(....) for this purpose because the latter returns indices
rather than a value for each element.
O__ ---- Peter Dalgaard Øster Farimagsgade 5, Entr.B
c/ /'_ --- Dept. of Biostatistics PO Box 2099, 1014 Cph. K
(*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918
~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk) FAX: (+45) 35327907
More information about the R-help