Message-ID: <B7D1E7D3-9EBE-4F82-8CEE-5B3694414918@comcast.net>
Date: 2011-01-30T23:05:47Z
From: David Winsemius
Subject: Help in getting info from a DataFrame
In-Reply-To: <1296426479557-3247740.post@n4.nabble.com>
On Jan 30, 2011, at 5:27 PM, ADias wrote:
> dados<-
> data
> .frame
> (Store
> =
> c
> ("Setubal
> ","lx
> ","Aveiro
> ","Coimbra
> ","Aveiro","Evora","Aveiro","Coimbra","Setubal"),Prod=c("Bloco
> Desenho","Bloco
> Desenho
> ","Tinteiro
> ","R?gua
> ","Lapiseira
> ","Regua
> ","Tinteiro","Lapiseira","Lapiseira"),qtd=c(2,1,2,1,3,1,1,1,1))
See if this is a more useful approach:
> lapsales <- dados[dados$Prod=="Lapiseira", ]
> lapsales[which.max(lapsales[ , "qtd" ]), "Store"]
[1] Aveiro
Levels: Aveiro Coimbra Evora lx Setubal
--
David Winsemius, MD
West Hartford, CT