Re: [R] Summing up Non-numeric column

Hi, Still another way would be to count the levels of the factors (if it is indeed a factor): length(levels(example$V1)) Ivan Le 12/8/2010 06:08, Jorge Ivan Velez a écrit : Hi, One way would be example- read.table(textConnection(V1 V2 + x y + y x + z b + a c + b j + d l + c

Re: [R] Summing up Non-numeric column

I think ?table is what you want. -- Bert On Wed, Dec 8, 2010 at 1:19 AM, Ivan Calandra ivan.calan...@uni-hamburg.de wrote: Hi, Still another way would be to count the levels of the factors (if it is indeed a factor): length(levels(example$V1)) Ivan Le 12/8/2010 06:08, Jorge Ivan Velez

[R] Summing up Non-numeric column

Dear All If I have the following dataset V1 V2 x y y x z b a c b j d l c o How do I use R command to get the total number of different letter in column V1 column V1 has 7 different letters. Thank you -- View this message in context:

Re: [R] Summing up Non-numeric column

Hi, One way would be example - read.table(textConnection(V1 V2 + x y + y x + z b + a c + b j + d l + c o), header = TRUE) closeAllConnections() example V1 V2 1 x y 2 y x 3 z b 4 a c 5 b j 6 d l 7 c o with(example, length(unique(V1))) [1] 7 with(example,

Re: [R] Summing up Non-numeric column

?unique -Original Message- From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On Behalf Of zhiji19 Sent: Wednesday, 8 December 2010 2:57 PM To: r-help@r-project.org Subject: [R] Summing up Non-numeric column Dear All If I have the following dataset V1 V2 x y

Re: [R] Summing up Non-numeric column

Thanks a lot -- View this message in context: http://r.789695.n4.nabble.com/Summing-up-Non-numeric-column-tp3077710p3077733.html Sent from the R help mailing list archive at Nabble.com. __ R-help@r-project.org mailing list