Hi,
Try this:
set.seed(1)
dat1<-data.frame(A=sample(letters[20:25],replace=TRUE),B=sample(letters[1:6],replace=TRUE),C=c(letters[1:3],letters[3:1]),D=sample(letters[2:7],replace=TRUE),E=sample(letters[21:26],replace=TRUE))
newdat<-list()
for(i in 1:ncol(dat1)){
newdat[[i]]<-list()
newdat[[i]]<-gsub("x","y",gsub("a","b",dat1[,i]))}
newdat1<-data.frame(do.call(cbind,newdat))
newdat1
# X1 X2 X3 X4 X5
#1 u f b f w
#2 v d b d y
#3 w d c f z
#4 y b c d v
#5 u b b f y
#6 y b b g u
A.K.
----- Original Message -----
From: Sapana Lohani <lohani.sap...@ymail.com>
To: R help <r-help@r-project.org>
Cc:
Sent: Monday, August 27, 2012 4:19 PM
Subject: [R] find and replace
I have 5 (A,B,C,D,E) columns in my dataframe. I want to replace all "x" with
"y" and all "a" with "b" within these 5 columns. Can I do it in one step?
Thanks
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
