6 messages · Jorge Ivan Velez, Bill Venables, zhiji19 +2 more
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
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?unique -----Original Message----- From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org] On Behalf Of zhiji19 Sent: Wednesday, 8 December 2010 2:57 PM To: r-help at r-project.org Subject: [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: http://r.789695.n4.nabble.com/Summing-up-Non-numeric-column-tp3077710p3077710.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ R-help at r-project.org 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.
Thanks a lot
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Hi, Still another way would be to count the levels of the factors (if it is indeed a factor): length(levels(example$V1)) Ivan Le 12/8/2010 06:08, Jorge Ivan Velez a ?crit :
Hi, One way would be
example<- read.table(textConnection("V1 V2
+ x y + y x + z b + a c + b j + d l + c o"), header = TRUE)
closeAllConnections() example
V1 V2 1 x y 2 y x 3 z b 4 a c 5 b j 6 d l 7 c o
with(example, length(unique(V1)))
[1] 7
with(example, length(unique(V2)))
[1] 7 HTH, Jorge On Tue, Dec 7, 2010 at 11:56 PM, zhiji19<> wrote:
Dear All If I have the following dataset V1 V2 x y y x z b a c b j d l c o How do I use R command to get the total number of different letter in column "V1" column "V1" has 7 different letters. Thank you -- View this message in context: http://r.789695.n4.nabble.com/Summing-up-Non-numeric-column-tp3077710p3077710.html Sent from the R help mailing list archive at Nabble.com.
______________________________________________ R-help at r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
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______________________________________________ R-help at r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Ivan CALANDRA PhD Student University of Hamburg Biozentrum Grindel und Zoologisches Museum Abt. S?ugetiere Martin-Luther-King-Platz 3 D-20146 Hamburg, GERMANY +49(0)40 42838 6231 ivan.calandra at uni-hamburg.de ********** http://www.for771.uni-bonn.de http://webapp5.rrz.uni-hamburg.de/mammals/eng/1525_8_1.php
I think ?table is what you want. -- Bert On Wed, Dec 8, 2010 at 1:19 AM, Ivan Calandra
Hi, Still another way would be to count the levels of the factors (if it is indeed a factor): length(levels(example$V1)) Ivan Le 12/8/2010 06:08, Jorge Ivan Velez a ?crit :
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, length(unique(V2)))
[1] 7 HTH, Jorge On Tue, Dec 7, 2010 at 11:56 PM, zhiji19<> ?wrote:
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: http://r.789695.n4.nabble.com/Summing-up-Non-numeric-column-tp3077710p3077710.html Sent from the R help mailing list archive at Nabble.com.
______________________________________________ R-help at r-project.org 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.
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______________________________________________ R-help at r-project.org 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.
-- Ivan CALANDRA PhD Student University of Hamburg Biozentrum Grindel und Zoologisches Museum Abt. S?ugetiere Martin-Luther-King-Platz 3 D-20146 Hamburg, GERMANY +49(0)40 42838 6231 ivan.calandra at uni-hamburg.de ********** http://www.for771.uni-bonn.de http://webapp5.rrz.uni-hamburg.de/mammals/eng/1525_8_1.php
______________________________________________ R-help at r-project.org 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.
Bert Gunter Genentech Nonclinical Biostatistics