HI,
This should also work:
set.seed(5)
list1<-lapply(1:3,function(i)
data.frame(col1=sample(c(1:5,""),10,replace=TRUE),
value=rnorm(10),stringsAsFactors=FALSE))
lapply(list1,function(x) {x[x==""]<-NA;x})
A.K.
----- Original Message -----
From: Dominic Roye <dominic.r...@gmail.com>
To: R help <r-help@r-project.org>
Cc:
Sent: Tuesday, January 8, 2013 7:16 AM
Subject: [R] Logical operator and lists
Hello R-Helpers,
I have a slight problem with the expresion data[data==""] <- NA which works
well for a data.frame. But now i must use the same for a list of
data.frames.
My idea is data[[]][data==""] but it don´t work.
Thanks!!
Dominic
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