Hi, all. Suppose I have an object with names (like a data.frame) and I want to walk in a loop with your names. How can I do this? The idea is like this:
my.data<-data.frame(matrix(runif(6),ncol=2)) names(my.data) [1] "X1" "X2"
for(i in names(my.data)){ my.variable <- cat(paste("my.data$", i, "\n", sep="")) print(mean(my.variable)) }
#it doesn't work.
Thnaks for all, C.
======================================== Cezar Freitas (ICQ 109128967) IMECC - UNICAMP Campinas, SP - Brasil
______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
You want assign().
df <- data.frame(matrix(runif(20),ncol=2))
# using ii instead of i makes searches *much* easier with
# a text editor.
for(ii in names(df)) {
assign(ii,df[[ii]])
}ls() [1] "X1" "X2" "df" "ii"
# might not be exactly the same on your machine due # to floating point rounding. all.equal(X1,df$X1) [1] TRUE
all.equal(X2,df$X2) [1] TRUE
Cheers
Jason -- Indigo Industrial Controls Ltd. 64-21-343-545 [EMAIL PROTECTED]
______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
