Re: [R] What does rbind(iris[,,1], iris[,,2], iris[,,3]) do?
'iris' in S-PLUS is not the same as 'iris' in R, rather similar to 'iris3' in R. You need the fourth (2002) edition of the book to work with R. The book does say in many places (including its title) it is about 'S-PLUS', but does have on-line complements about the changes needed for R of a similar vintage (last updated Dec 2001). You are trying to use a book written in 1998 on a different system in 2006, and you have the audacity to accuse the authors of making errors because it does not work. I look forwards to receiving your apology. On Thu, 13 Apr 2006, Sasha Pustota wrote: It's in the Venables Ripley MASS (ed 3) book in the section on principal components. The context is as follows ir - rbind(iris[,,1], iris[,,2], iris[,,3]) ir.species - factor(c(rep(s,50),rep(c,50),rep(v,50))) (then they use brush(ir) which I guess is not an R function) and then princomp(log(ir[1:4]),cor=T) (there is no [1:4] in the text which is probably a typo) No, just your error. From what I can see, iris[,,1] is the same as iris and rbind(iris[,,1], iris[,,2], iris[,,3]) duplicates iris 3 times while mangling the row index. What happens to the index and what is the purpose of that? I also seem to get the same result with rbind(iris[,,1], iris[,,1], iris[,,1]). What is the difference with rbind(iris[,,1], iris[,,2], iris[,,3])? __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html -- Brian D. Ripley, [EMAIL PROTECTED] Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UKFax: +44 1865 272595 __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Re: [R] What does rbind(iris[,,1], iris[,,2], iris[,,3]) do?
What you are referring to iris is called iris3 in R so just replace iris with iris3. iris3 is a 3d array in R whereas iris is a data frame. On 4/13/06, Sasha Pustota [EMAIL PROTECTED] wrote: It's in the Venables Ripley MASS (ed 3) book in the section on principal components. The context is as follows ir - rbind(iris[,,1], iris[,,2], iris[,,3]) ir.species - factor(c(rep(s,50),rep(c,50),rep(v,50))) (then they use brush(ir) which I guess is not an R function) and then princomp(log(ir[1:4]),cor=T) (there is no [1:4] in the text which is probably a typo) From what I can see, iris[,,1] is the same as iris and rbind(iris[,,1], iris[,,2], iris[,,3]) duplicates iris 3 times while mangling the row index. What happens to the index and what is the purpose of that? I also seem to get the same result with rbind(iris[,,1], iris[,,1], iris[,,1]). What is the difference with rbind(iris[,,1], iris[,,2], iris[,,3])? __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Re: [R] What does rbind(iris[,,1], iris[,,2], iris[,,3]) do?
[Gabor Grothendieck] What you are referring to iris is called iris3 in R so just replace iris with iris3. iris3 is a 3d array in R whereas iris is a data frame. Thanks for this calm and simple reply. Some could learn from you! :-) -- François Pinard http://pinard.progiciels-bpi.ca __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Re: [R] What does rbind(iris[,,1], iris[,,2], iris[,,3]) do?
Brian Ripley [EMAIL PROTECTED] wrote: 'iris' in S-PLUS is not the same as 'iris' in R, rather similar to 'iris3' in R. Thank you! This answered all my questions. You need the fourth (2002) edition of the book to work with R. The book does say in many places (including its title) it is about 'S-PLUS', but does have on-line complements about the changes needed for R of a similar vintage (last updated Dec 2001). You are trying to use a book written in 1998 on a different system in 2006, and you have the audacity to accuse the authors of making errors because it does not work. I look forwards to receiving your apology. I apologize for supposing that iris is the same in R and Splus (I did check the index of the book for iris but I should have looked elsewhere) as well as for supposing that the omission of [1:4] was probably a typo. My intention was to get help with understanding and not for a moment was I thinking of accusing the authors of anything. S On Thu, 13 Apr 2006, Sasha Pustota wrote: It's in the Venables Ripley MASS (ed 3) book in the section on principal components. The context is as follows ir - rbind(iris[,,1], iris[,,2], iris[,,3]) ir.species - factor(c(rep(s,50),rep(c,50),rep(v,50))) (then they use brush(ir) which I guess is not an R function) and then princomp(log(ir[1:4]),cor=T) (there is no [1:4] in the text which is probably a typo) No, just your error. From what I can see, iris[,,1] is the same as iris and rbind(iris[,,1], iris[,,2], iris[,,3]) duplicates iris 3 times while mangling the row index. What happens to the index and what is the purpose of that? I also seem to get the same result with rbind(iris[,,1], iris[,,1], iris[,,1]). What is the difference with rbind(iris[,,1], iris[,,2], iris[,,3])? __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
