Here´s my problem,
i have developed the function kurtosis (using R-book as a guide) with this
commands:
kurtosis<-function(x) {
m4<-sum((x-mean(x))^4)/length(x)
s4<-var(x)^2
m4/s4 - 3 }Then create the object fem, which is the difference between the count of a trait in the left side of the body minus the right side. It´s a numeric variable. But i´ve got no data for some individuals, so in the variable "fem" i got numbers and smoe "NA". When i try to apply kurtosis to "fem", the NA, don´t allow me to do that, that`s what i get: > kurtosis(fem) [1] NA I tried with simple tricks, but i´ve got no results: > kurtosis(fem,na.rm=T) Error en kurtosis(fem, na.rm = T) : el argumento(s) no fue utilizado(s) (na.rm = T) What can i do? the values of fem vary from -4 to 9. Thanks very much > kurtosis(fem[fem!="NA"]) [1] NA ----- Mario Garrido Escudero PhD student Dpto. de Biología Animal, Ecología, Parasitología, Edafología y Qca. Agrícola Universidad de Salamanca -- View this message in context: http://r.789695.n4.nabble.com/Applying-a-function-to-a-subset-tp3558567p3558567.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ R-help@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.
