Try this:
transform(pose16, prix = POSITION * SETTLEMENT, SETTLEMENT = NULL, POSITION
= POSITION * -1)
On Wed, May 12, 2010 at 9:50 AM, arnaud Gaboury <arnaud.gabo...@gmail.com>wrote:
> Dear group,
>
> Here is my df :
>
> pose16 <-
> structure(list(DESCRIPTION = structure(c(1L, 2L, 3L, 4L, 5L,
> 6L, 7L, 8L, 9L, 12L), .Label = c("COPPER May/10", "COTTON NO.2 Jul/10",
> "CRUDE OIL miNY May/10", "GOLD Jun/10", "ROBUSTA COFFEE (10) Jul/10",
> "SOYBEANS Jul/10", "SUGAR NO.11 Jul/10", "SUGAR NO.11 May/10",
> "WHEAT Jul/10", "PRIMARY NICKEL USD", "PRM HGH GD ALUMINIUM USD",
> "SPCL HIGH GRADE ZINC USD", "STANDARD LEAD USD"), class = "factor"),
> POSITION = c(-2, 3, 2, 2, 18, 3, 5, -1, 5, -1), SETTLEMENT = c(351.45,
> 81.59, 83.24, 1136.9, 1382, 995, 16.18, 15.95, 502.5, 2423
> )), .Names = c("DESCRIPTION", "POSITION", "SETTLEMENT"), row.names =
> c("1",
> "2", "3", "4", "5", "6", "7", "8", "9", "51"), class = "data.frame")
>
> Here is my code :
>
> >pose16$prix<-pose16[,2]*pose16[,3]
> >pose16<-pose16[,-3]
> >pose16[,-1]<- -pose16[,-1]
>
> It works fine, as the resulting df is what I want. I am just wandering if
> these 3 command lines can be writen in only 1 or 2 lines??
>
> TY for the help.
>
> ______________________________________________
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> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>
--
Henrique Dallazuanna
Curitiba-Paraná-Brasil
25° 25' 40" S 49° 16' 22" O
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