Re: [R] Name of a column
1. You don't need to say truc==T. truc is already a logical vector. 2. colnames are just another vector, so do colnames(truc)[truc] Dave On 15/06/06, David Hajage [EMAIL PROTECTED] wrote: Hello, My problem is quite simply, but I didn't find any solution... I have a vector : truc longueur30 longueur40 longueur50 longueur60 longueur70 longueur80 longueur90 34 FALSE FALSE FALSE FALSE TRUE FALSE FALSE I would like to have the name of the column where there is TRUE. colnames(truc) [1] longueur30 longueur40 longueur50 longueur60 longueur70 [6] longueur80 longueur90 truc[truc == T] [1] TRUE colnames(truc[truc == T]) NULL How can I do it ? Thank you for your help. -- David [[alternative HTML version deleted]] __ 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
[R] Name of a column
Hello, My problem is quite simply, but I didn't find any solution... I have a vector : truc longueur30 longueur40 longueur50 longueur60 longueur70 longueur80 longueur90 34 FALSE FALSE FALSE FALSE TRUE FALSE FALSE I would like to have the name of the column where there is TRUE. colnames(truc) [1] longueur30 longueur40 longueur50 longueur60 longueur70 [6] longueur80 longueur90 truc[truc == T] [1] TRUE colnames(truc[truc == T]) NULL How can I do it ? Thank you for your help. -- David [[alternative HTML version deleted]] __ 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] Name of a column
X - as.logical(rep(c(0,1), each=13)) names(X) - LETTERS which(X) N O P Q R S T U V W X Y Z 14 15 16 17 18 19 20 21 22 23 24 25 26 names(which(X)) [1] N O P Q R S T U V W X Y Z ?which David Hajage wrote: Hello, My problem is quite simply, but I didn't find any solution... I have a vector : truc longueur30 longueur40 longueur50 longueur60 longueur70 longueur80 longueur90 34 FALSE FALSE FALSE FALSE TRUE FALSE FALSE I would like to have the name of the column where there is TRUE. colnames(truc) [1] longueur30 longueur40 longueur50 longueur60 longueur70 [6] longueur80 longueur90 truc[truc == T] [1] TRUE colnames(truc[truc == T]) NULL How can I do it ? Thank you for your help. -- Chuck Cleland, Ph.D. NDRI, Inc. 71 West 23rd Street, 8th floor New York, NY 10010 tel: (212) 845-4495 (Tu, Th) tel: (732) 512-0171 (M, W, F) fax: (917) 438-0894 __ 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
