Hi,
According to help(sub), the ^ should match the zero-length string at the
beginning of a string:
sub('^','var',1:3) # "1" "2" "3"
sub('$','var',1:3) # "1var" "2var" "3var"
# This generates what I expected from the first case:
sub('^.','var',11:13) # "var1" "var2" "var3"
Dave
--
Dr. David Forrest
[EMAIL PROTECTED] (804)684-7900w
[EMAIL PROTECTED] (804)642-0662h
http://maplepark.com/~drf5n/
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