[R] character comp
ru|pb@rr@d@@ @end|ng |rom @@po@pt
Sat Feb 9 19:55:02 CET 2019
The following will do it.
mydataframe$dvar <- c(sapply(mydataframe[-1], nchar) %*% c(1, -1))
Hope this helps,
Às 18:05 de 09/02/2019, Val escreveu:
> Hi All,
> In a given data frame I want to compare character values of two columns.
> My sample data looks like as follow,
> mydataframe <- read.table( text='ID var1 var2
> R1 AA AAA
> R2 AAA AAA
> R3 A AAAA
> R4 AA A
> R5 A AAA', header = TRUE, as.is = TRUE )
> For each ID, I want create the third column "dvar" as difference
> between var1 and var2
> Row1( R1) the "dvar" value will be -1 and the complete desired out
> put looks like as follow.
> ID var1 var2 dvar
> R1 AA AAA -1
> R2 AAA AAA 0
> R3 A AAAA -3
> R4 AA A 1
> R5 A AAA -2
> How do i do this? Any help please?
> Thank you
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