Re: [R] how to subset unique factor combinations from a data frame.

2011-01-05 Thread Petr PIKAL
m: Dennis Murphy [mailto:djmu...@gmail.com] > Sent: Tuesday, January 04, 2011 9:07 PM > To: SNV Krishna > Cc: r-help@r-project.org > Subject: Re: [R] how to subset unique factor combinations from a data frame. > > > Hi: > > Did you try something like > > summdf <-

Re: [R] how to subset unique factor combinations from a data frame.

2011-01-04 Thread SNV Krishna
gards, SNVK -Original Message- From: Petr PIKAL [mailto:petr.pi...@precheza.cz] Sent: Tuesday, January 04, 2011 4:06 PM To: SNV Krishna Cc: r-help@r-project.org Subject: Odp: [R] how to subset unique factor combinations from a data frame. Hi r-help-boun...@r-project.org napsal dne 04.01.2011 0

Re: [R] how to subset unique factor combinations from a data frame.

2011-01-04 Thread Dennis Murphy
ports (1000 MT) 60 > 1991United Kingdom Wheat, DurumYield (MT/HA) 5 > > Wish this is clear. Any suggestion > > Regards, > > SNVK > > -Original Message- > From: Petr PIKAL [mailto:petr.pi...@precheza.cz] > Sent: Tuesday, January 04, 2011

Re: [R] how to subset unique factor combinations from a data frame.

2011-01-04 Thread Petr PIKAL
...@precheza.cz] > Sent: Tuesday, January 04, 2011 4:06 PM > To: SNV Krishna > Cc: r-help@r-project.org > Subject: Odp: [R] how to subset unique factor combinations from a data > frame. > > Hi > > r-help-boun...@r-project.org napsal dne 04.01.2011 05:21:25: > >

Re: [R] how to subset unique factor combinations from a data frame.

2011-01-04 Thread SNV Krishna
ion Regards, SNVK -Original Message- From: Petr PIKAL [mailto:petr.pi...@precheza.cz] Sent: Tuesday, January 04, 2011 4:06 PM To: SNV Krishna Cc: r-help@r-project.org Subject: Odp: [R] how to subset unique factor combinations from a data frame. Hi r-help-boun...@r-project.org napsal

[R] how to subset unique factor combinations from a data frame.

2011-01-03 Thread SNV Krishna
Hi All I have these questions and request members expert view on this. a) I have a dataframe (df) with five factors (identity variables) and value (measured value). The id variables are Year, Country, Commodity, Attribute, Unit. Value is a value for each combination of this. I would like to