Re: [R] setClass confusion

2013-07-04 Thread David Winsemius
On Jul 3, 2013, at 4:54 PM, Erin Hodgess wrote: > Dear R People: > > > I am experimenting with S4 classes and methods but am having trouble with > setting up a class. > > Here is an example: > >> buzz <- setClass("buzz",slots=c(x="matrix"), > + validity <- function(object) { > + if(is.matrix(

Re: [R] setClass confusion

2013-07-03 Thread Duncan Murdoch
On 13-07-03 7:54 PM, Erin Hodgess wrote: Dear R People: I am experimenting with S4 classes and methods but am having trouble with setting up a class. Here is an example: buzz <- setClass("buzz",slots=c(x="matrix"), + validity <- function(object) { + if(is.matrix(object)==FALSE)stop("Input m