Re: [R] Subset: data frames and factor levels

Weidong Gu uab.edu> writes: > > Try drop.levels in library gdata. > For what it's worth, adding a drop.levels (default FALSE) to subset is a long-standing wish of mine -- I keep meaning to put together a patch to do this. (This question comes up about once a year on the R help list.) I loo

Re: [R] Subset: data frames and factor levels

Lobo Sent: Tuesday, April 01, 2008 3:26 AM To: Stefan Grosse Cc: r-help@r-project.org Subject: Re: [R] Subset: data frames and factor levels Thanks, problem solved thanks to your hints, but, within subset(), drop=T still keeps the unused levels (I'm using 2.6.1 on win). Agus Stefan Grosse esc

Re: [R] Subset: data frames and factor levels

Thanks, problem solved thanks to your hints, but, within subset(), drop=T still keeps the unused levels (I'm using 2.6.1 on win). Agus Stefan Grosse escribió: > On Tuesday 01 April 2008 09:43:00 am Agustin Lobo wrote: > AL> I'm doing: > AL> etni <- subset(etni, NAMECOM!="Maniquisito") > AL> > AL>

Re: [R] Subset: data frames and factor levels

On Tuesday 01 April 2008 09:43:00 am Agustin Lobo wrote: AL> I'm doing: AL> etni <- subset(etni, NAMECOM!="Maniquisito") AL> AL> where etni is a data.frame, NAMECOM a factor and "Maniquisito" labels AL> a row that I want to delete. AL> AL> The problem is that while the row is deleted, the factor le

[R] Subset: data frames and factor levels

Hi! I'm doing: etni <- subset(etni, NAMECOM!="Maniquisito") where etni is a data.frame, NAMECOM a factor and "Maniquisito" labels a row that I want to delete. The problem is that while the row is deleted, the factor level is still there (I can see "Maniquisito" if I do levels(etni$NAMECOM) ).