Ah ha! That's perfect. It would have taken me forever to get that. And I'm back in business....
Thanks, Jeff. ----- Original Message ----- From: "Dieter Menne" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]>; "R-Help" <[EMAIL PROTECTED]> Sent: Sunday, November 16, 2003 10:23 AM Subject: prevent conversion to factors in aggregate? > Spencer Graves wrote > > >>I don't know how to prevent aggregate from making factors of everything, > >>but the following shows how to cast them back into what you want: > .... > > DF.$bch <- as.character(DF.$b) > > DF.$dn <- as.numeric(as.character(DF.$d)) > > sapply(DF., class) > ... > > ---- > help(factor) suggests: > > "To "revert" a factor f to its original numeric values, > as.numeric(levels(f))[f] is recommended and slightly more efficient than > as.numeric(as.character(f)). " > > And in package Hmisc there is a function "summarize" that does not touch > non-factors. > > Dieter Menne > > ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
