Question

Here’s my dataframe df

I’m trying:

df=data.frame(rbind(c(1,"*","*"),c("*",3,"*"))
df2=as.data.frame(sapply(df,sub,pattern="*",replacement="NA"))

It doesn’t work because of the asterisk but I’m getting mad trying to replace it.

Answer 1

You should put up a full reproducible example, people will be more inclined to help when you make it easy for em. Anywho…

dat <- data.frame(a=c(1,2,'*',3,4), b=c('*',2,3,4,'*'))
> dat
  a b
1 1 *
2 2 2
3 * 3
4 3 4
5 4 *
> as.data.frame(sapply(dat,sub,pattern='\\*',replacement=NA))
     a    b
1    1 <NA>
2    2    2
3 <NA>    3
4    3    4
5    4 <NA>