Hello,
I woul dlike to remove factors from all the columns of a dataframe.
I can do it n a column at the time with
```
df <- data.frame(region=factor(c('A', 'B', 'C', 'D', 'E')),
sales = c(13, 16, 22, 27, 34), country=factor(c('a',
'b', 'c', 'd', 'e')))
new_df$region <- droplevels(new_df$region)
```
What is the syntax to remove all factors at once (from all columns)?
For this does not work:
```
> str(df)
'data.frame': 5 obs. of 3 variables:
$ region : Factor w/ 5 levels "A","B","C","D",..: 1 2 3 4 5
$ sales : num 13 16 22 27 34
$ country: Factor w/ 5 levels "a","b","c","d",..: 1 2 3 4 5
> df = droplevels(df)
> str(df)
'data.frame': 5 obs. of 3 variables:
$ region : Factor w/ 5 levels "A","B","C","D",..: 1 2 3 4 5
$ sales : num 13 16 22 27 34
$ country: Factor w/ 5 levels "a","b","c","d",..: 1 2 3 4 5
```
Thank you
______________________________________________
R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
