similarly:
as.character(factor(c("abca","coma"),labels=c("aaa","bbb")))
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Jacques VESLOTCNRS UMR 8090 I.B.L (2ème étage) 1 rue du Professeur Calmette B.P. 245 59019 Lille Cedex Tel : 33 (0)3.20.87.10.44 Fax : 33 (0)3.20.87.10.31 http://www-good.ibl.fr ------------------------------------------------------------------- Zhang Jian a écrit : > The example is simply.But the other example: > One column: acba,coma,acmo,acmo,acba,coma > I want to replace "acba" with "aaa", "coma" with "bbb", and "acmo" with > "ddd". > Like this: aaa,bbb,ddd,ddd,aaa,bbb > How to do it? > Thanks. > > > On 12/19/06, *Jacques VESLOT* <[EMAIL PROTECTED] > <mailto:[EMAIL PROTECTED]>> wrote: > > you can use as.numeric(factor( )); in your example: > > ex <- sample(letters[1:3], 10, T) > > ex > [1] "b" "b" "c" "b" "a" "a" "b" "b" "a" "a" > > > as.numeric(factor(ex)) > [1] 2 2 3 2 1 1 2 2 1 1 > > if the order is different, use levels: > > > as.numeric(factor(ex, levels=letters[3:1])) > [1] 2 2 1 2 3 3 2 2 3 3 > > ------------------------------------------------------------------- > Jacques VESLOT > > CNRS UMR 8090 > I.B.L (2ème étage) > 1 rue du Professeur Calmette > B.P. 245 > 59019 Lille Cedex > > Tel : 33 (0)3.20.87.10.44 > Fax : 33 (0)3.20.87.10.31 > > http://www-good.ibl.fr > ------------------------------------------------------------------- > > Zhang Jian a écrit : > > I want to replace some objects in one row or column.For example, > > One colume: a,b,a,c,b,b,a,a,c. > > I want to replace "a" with "1", "b" with "2", and "c" with "3". > > Like this: 1,2,1,3,2,2,1,1,3. > > > > How to do it? I donot know how to do it. Thanks. > > > > [[alternative HTML version deleted]] > > > > ______________________________________________ > > [email protected] <mailto:[email protected]> > mailing list > > https://stat.ethz.ch/mailman/listinfo/r-help > > PLEASE do read the posting guide > http://www.R-project.org/posting-guide.html > > and provide commented, minimal, self-contained, reproducible code. > > > > ______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
