Re: [R] mlogit: message "invalid 'row.names' length" after subsetting data

Thanks a lot Bill! This works fine! Useful to know regarding subset. Charles -- View this message in context: http://r.789695.n4.nabble.com/mlogit-message-invalid-row-names-length-after-subsetting-data-tp4684465p4684470.html Sent from the R help mailing list archive at Nabble.com. __

Re: [R] mlogit: message "invalid 'row.names' length" after subsetting data

> dd1 <- subset(dd, dd$Effect=='none') Try using dd1 <- dd[dd$Effect=='none', ] instead of that call to subset(). subset() strips the non-data.frame attributes from its output. It may be easier to use the subset argument to mlogit, as in mlogit(..., subset = Effect=="none"). Bill Dunlap TIBC