[R] How to replace the values in a column

[Rui Barradas]

Hello,

Try the following.
(In Andrija's code I've changed 'df' to 'DF', 'df' is a R function name)

DF <- read.table( ... etc ...

tc <- textConnection("
Column1(Gen)        Column2(Name)
A_1                               Wynda
A_2                                 A_2
B_1                                 B_1
B_3                             Wynda
OP1_1                       Wynda
OP1_5                        OP1_5 
")
TransTable <- read.table(tc, header=TRUE, stringsAsFactors=FALSE)
close(tc)

nrTrans <- nrow(TransTable)

for(iTrans in 1:nrTrans){
	i <- DF$Gen == TransTable[iTrans, 1]
	DF$Gen[i] <- TransTable[iTrans, 2]
}
# See first 6 lines of result
head(DF)

That's it.

Hope this helps,

Rui Barradas



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