R help - Jun 2004 - level assignment

Hi,

i would like recocde some numeric variables in one
step, but hanging unexpected in a level asignment problem?

for(i in 2:length(msegmente))
{   msegmente[,i] <- as.factor(msegmente[,i])
}
 
Problem is that not every level is in every variable, so the
asignment is necessary!?

levels(LT.200301) <-   c(1=AK,3=GC,10=OC, 
29=AM,32=IA,38=ACH,52=ZBA,53=A9L,59=EHK)
Error: syntax error
> levels(LT.200301) <-   list(c(1=AK,3=GC,10=OC, 
29=AM,32=IA,38=ACH,52=ZBA,53=A9L,59=EHK))
Error: syntax error
> levels(LT.200301) <-  
c(1="AK",3="GC",10="OC",
29="AM",32="IA",38="ACH",52="ZBA",53="A9L",59="EHK")
Error: syntax error

Many thanks for any hint/help
Christian

On Tue, 8 Jun 2004 13:09:25 +0200 Christian Schulz wrote:
> Hi,
> 
> i would like recocde some numeric variables in one
> step, but hanging unexpected in a level asignment problem?
> 
> for(i in 2:length(msegmente))
> {   msegmente[,i] <- as.factor(msegmente[,i])
> }
>  
> Problem is that not every level is in every variable, so the
> asignment is necessary!?
> 
> levels(LT.200301) <-   c(1=AK,3=GC,10=OC, 
> 29=AM,32=IA,38=ACH,52=ZBA,53=A9L,59=EHK)
> Error: syntax error
> > levels(LT.200301) <-   list(c(1=AK,3=GC,10=OC, 
> 29=AM,32=IA,38=ACH,52=ZBA,53=A9L,59=EHK))
> Error: syntax error
> > levels(LT.200301) <-  
c(1="AK",3="GC",10="OC",
>
29="AM",32="IA",38="ACH",52="ZBA",53="A9L",59="EHK")
> Error: syntax error
I'm not sure what exactly you are trying to do, but does replacing

  as.factor(msegmente[,i])

by

  factor(msegmente[,i],
         levels = c(1, 3, 10, 29, 32, 38, 52, 53, 59),
         labels =
c("AK","GC","OC","AM","IA","ACH","ZBA","A9L","EHK"))

yield the desired result?

hth,
Z

> Many thanks for any hint/help
> Christian
> 
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