i want to extract label from the labelelled column from the database. so here i want to extract labels from columns all, vs1, am1 from the data df.
output can be a list of labels ("all","version","amp")
library(expss)
df <- mtcars
df$vs<-factor(df$vs, levels=c(1,0), labels = c("version","others"))
df$am<-factor(df$am, levels=c(1,0), labels = c("AMP","others"))
df$all<- 1
df$vs1<-ifelse(df$vs=='version',1,NA)
df$am1<-ifelse(df$am == 'AMP', 1, NA)
#"Cuts will be labelled like below definition"
val_lab(df$all)<-c("All"=1)
val_lab(df$vs1)<-c("version"=1)
val_lab(df$am1)<-c("AMP"=1)
dfl <- list(df$all,df$vs1,df$am1)
I don't understand the question. What is dat
, same thing as df
? What is val_lab()
?
AlexisW
4
Still not sure I fully understand, but I think what you want is simply:
lapply(dfl, val_lab)
#> [[1]]
#> All
#> 1
#>
#> [[2]]
#> version
#> 1
#>
#> [[3]]
#> AMP
#> 1
or to keep just the names:
lapply(dfl,
function(x) names(val_lab(x)))
#> [[1]]
#> [1] "All"
#>
#> [[2]]
#> [1] "version"
#>
#> [[3]]
#> [1] "AMP"
(and you can switch lapply()
to sapply()
to get them as a vector)
system
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5
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