data.frame[1,1]<- differs from data.frame[[1]][1]<- (PR#403)
jens.oehlschlaegel-akiyoshi@mdfactory.de
jens.oehlschlaegel-akiyoshi@mdfactory.de
Wed, 26 Jan 2000 17:24:05 +0100 (MET)
I observed the following difference:
> ddd <- data.frame(a=1:3, b=1:3)
# assignment of 'X' silently ignored
> ddd[1,1] <- 'X'
> is.factor(ddd[[1]])
[1] FALSE
> ddd
a b
1 1 1
2 2 2
3 3 3
# assignment of 'X' not ignored
> ddd[[1]][1] <- 'X'
> is.factor(ddd[[1]])
[1] TRUE
> ddd
a b
1 X 1
2 2 2
3 3 3
Regards
> version
_
platform Windows
arch x86
os Win32
system x86, Win32
status
major 0
minor 90.1
year 1999
month December
day 15
language R
--
Dr. Jens Oehlschlägel-Akiyoshi
MD FACTORY GmbH
Bayerstrasse 21
80335 München
Tel.: 089 545 28-27
Fax.: 089 545 28-10
http://www.mdfactory.de
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
r-devel mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "info", "help", or "[un]subscribe"
(in the "body", not the subject !) To: r-devel-request@stat.math.ethz.ch
_._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._