[R] 'save' method for S4 class

[Simon Zehnder]

Hi Christopher,

I think, that "save" is no generic function like "plot", "show", etc. So at first you have to determine a generic.

setGeneric("save", function(x, file_Path) standardGeneric("save"))

Now your definition via setMethod. 


Best

Simon



On Jul 18, 2013, at 12:09 PM, Christofer Bogaso <bogaso.christofer at gmail.com> wrote:

> Hello again,
> 
> I am trying to define the 'save' method for my S4 class as below:
> 
> setClass("MyClass", representation(
> 		Slot1 = "data.frame"
> 	))	
> 	
> setMethod("save", "MyClass", definition = function(x, file_Path) {
> 		
> 		write.table(x at Slot1, file = file_Path, append = FALSE, quote = TRUE,
> sep = ",",
> 						eol = "\n", na = "NA", dec = ".", row.names = FALSE,
> 						col.names = TRUE, qmethod = c("escape", "double"),
> 						fileEncoding = "")
> 	})
> 
> However while doing this I am getting following error:
> 
> Error in conformMethod(signature, mnames, fnames, f, fdef, definition) :
>  in method for ‘save’ with signature ‘list="MyClass"’: formal
> arguments (list = "MyClass", file = "MyClass", ascii = "MyClass",
> version = "MyClass", envir = "MyClass", compress = "MyClass",
> compression_level = "MyClass", eval.promises = "MyClass", precheck =
> "MyClass") omitted in the method definition cannot be in the signature
> 
> 
> Can somebody point me what will be the correct approach to define
> 'save' method for S4 class?
> 
> Thanks and regards,
> 
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