Hello,
Try the following.
dd <- data.frame(A=letters[1:10], var_1=1:10, var_2=11:20)
index <- grep("var_", names(dd))
for(i in index)
print(dd[[ i ]]) # or dd[, i]
#
vars <- paste("var", 1:2, sep="_")
for(v in vars)
print(dd[, v]) # or dd[[ v ]]
There's nothing you can do in Stata you can't in R.
I don't know Stata but I know I'm right.
Almost surely.
Hope this helps,
Rui Barradas
Em 28-06-2012 14:42, kat_the_great escreveu:
Hi Oliver,
Thank you for your reply.
I can't use vectors as each var_1, var_2 is a new column/variable, not a new
observation within a vector.
But thank you,
Kat
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