Hi I am giving labels to my data frame manually like below, I have 800 columns to be labeled , after that I am creating a subset of data frame (sub setting of data have many), then applying that data frame to function for calculation.

labels can be different for all chunks , also its very time taking for creating labels one by one for all chunks.

```
data<-data.frame( col1=c(1,1,NA,NA,NA,NA,NA,NA,1,NA,NA,NA,NA,NA,NA,NA,NA,1,NA,NA,NA,1,1,1,NA,1,1,NA,NA,NA,NA,1,NA,NA,NA,NA,1,NA,1),
col2=c(1,1,1,1,1,NA,NA,NA,NA,1,1,1,1,1,NA,NA,NA,1,1,1,NA,1,1,1,1,1,NA,NA,NA,1,1,1,1,1,1,1,NA,NA,NA),
col3=c(1,1,NA,NA,NA,NA,NA,1,NA,NA,NA,NA,NA,NA,NA,NA,1,NA,NA,NA,NA,NA,1,1,1,NA,NA,NA,1,NA,NA,1,1,1,1,1,NA,NA,1),
col4=c(1,NA,NA,NA,NA,NA,NA,NA,NA,NA,1,NA,NA,NA,NA,NA,NA,NA,1,NA,NA,NA,NA,NA,NA,NA,NA,NA,NA,NA,NA,NA,NA,NA,NA,NA,NA,NA,NA),
col5=c(1,2,1,1,1,2,1,2,2,1,2,NA,1,1,2,2,2,1,1,1,2,NA,2,1,1,1,2,2,2,NA,1,2,2,1,1,1,2,2,2)
)
data$col1<-factor(data$col1, levels=1, labels="Sales")
data$col2<-factor(data$col2, levels=1, labels="OPS")
data$col3<-factor(data$col3, levels=1, labels="Management")
data$col4<-factor(data$col4, levels=1, labels="HR")
data$col5<-factor(data$col5, levels=c(1,2), labels=c("Local","Overseas"))
df1<- data
df1$cc1<-1
df2<- subset(df, col5 == 'Local')
df$cc2<-ifelse(df$col5 == 'Local',1,NA)
lst<-list(df$cc1, df$cc2)
ldat<-list("ALL" = df, "Local" =df2)
```

now I am looking for a function like where I can give a list of labels for eg .

```
colnames=c("col1","col2"...."col4")
col_labels =c("sales","OPS"...."HR")
# so here I will be just needed to update the list of columns and their labels
conv_frac <- function(dataset,var_bject){
for(i in 1:ldat)
lapply(factor,ldat(i)) # may be lapply or any thing else
}
# then will apply factor_list
conv_frac(dataset = ldat, col =colnames , labels = col_labels)
```

any solution for this