dear R wizzards: two options() related questions.
[a] options(na.action): many of my variables have missing variables, so I would like to set a default to ignore, especially in univariate functions like mean() and median() . alas, without na.rm=T in the functions themselves, I always get an NA. my code is full of na.rm=T is there a magic invokation of options with na.action that is honored by these functions?
[b] options(?): how do I get R to not prompt me for saving the workspace upon exit, but to instead automatically save the command history .Rhistory but not the data .RData ?
help appreciated.
sincerely,
/iaw --- ivo welch professor of finance and economics brown / nber / yale
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