[R] Summary: length() "ain't misbehavin'" after all
parkhurs at indiana.edu
Sat Mar 15 00:49:04 CET 2003
I asked why length(byyr$cnd95[byyr$cnd95=="tr"]) was counting NA's as well as "tr"s.
Thanks to Brian Ripley, Uwe Ligges, Ott Toomet, Marc Schwartz, and Thomas Lumley for
Two solutions were to replace my call with
length[byyr$cnd95 %in% "tr"] or with sum(byyr$cnd95 == "tr", na.rm=TRUE)
and there were variations on those themes.
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