How to replace data values in dataframe

Question

I have a little question concerning value replacement in a DF. I know how to replace value using ifelse statement but does exist some function which allows us to don't specify the else condition.

df <- data.frame(ID = paste0("ID",1:10),VAL = sample(10,10,replace=T),stringsAsFactors = F)

df$VAL <- ifelse(df$VAL == 1,"*",df$VAL)

Thanks

df$VAL[df$VAL == 1] <- '*' ?

Otto Kässi
– Otto Kässi

2018-04-03 10:17:29 +00:00
Commented Apr 3, 2018 at 10:17 — Otto Kässi
– Otto Kässi, Commented Apr 3, 2018 at 10:17
That's work fine, thank you !

Nesio
– Nesio

2018-04-03 10:26:20 +00:00
Commented Apr 3, 2018 at 10:26 — Nesio
– Nesio, Commented Apr 3, 2018 at 10:26

Guillaume Ottavianoni · Accepted Answer · 2018-04-03 10:25:05Z

1

You can simply use :

 your_val = 1 
 df[df$VAL == your_val,"VAL"] <- "*"

answered Apr 3, 2018 at 10:25

Guillaume Ottavianoni

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