On 24.02.2012 16:25, Arnaud Gaboury wrote:
Dear list,
n00b question, but still can't find any easy answer.
Here is a df:
Change
df<-data.frame(cbind(x=c("AA","BB","CC","AA"),y=1:4))
to
df <- data.frame(x = c("AA","BB","CC","AA"), y = 1:4)
to make your object a sensible data.frame.
df
x y
1 AA 1
2 BB 2
3 CC 3
4 AA 4
I want to modify this df this way :
if df$x=="AA" then df$y=df$y*10
df$y[df$x=="AA"] <- df$y[df$x=="AA"] * 25
...
Uwe Ligges
if df$x=="BB" then df$y=df$y*25
and so on with other conditions.
TY for any help.
Trading
A2CT2 Ltd.
Arnaud Gaboury
A2CT2 Ltd.
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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.
