2008/6/10 Prof Brian Ripley <[EMAIL PROTECTED]>:
> showDefault has
>
> clDef <- getClass(class(object))
>
> Looks like the showDefault code intended
>
> clDef <- getClass(class(object), .force=TRUE)
>
> However, why are you calling show() on a non-S4 object? I cannot see any
> advtanges in doing so.
I'd like *one* printing method for all objects, and the generic "show"
is registered as working for ANYthing (see below) ?
Or is defining one's own function currently recommended ?
myPrint <- function(x, ...)
{
if (isS4(x)) {
show(x, ...)
} else {
print(x, ...)
}
}
> showMethods("show")
Function: show (package methods)
object="ANY"
object="classRepresentation"
object="derivedDefaultMethod"
(inherited from: object="MethodDefinition")
object="function"
(inherited from: object="ANY")
object="genericFunction"
object="MethodDefinition"
object="MethodsList"
(inherited from: object="ANY")
object="MethodWithNext"
object="ObjectsWithPackage"
object="signature"
object="traceable"
> showMethods("print")
Function "print":
<not a generic function>
> getMethod("show", "ANY")
Method Definition (Class "derivedDefaultMethod"):
function (object)
showDefault(object, FALSE)
<environment: namespace:methods>
Signatures:
object
target "ANY"
defined "ANY"
> On Tue, 10 Jun 2008, Laurent Gautier wrote:
>
>> Dear List,
>>
>> Calling "show" on an object of class "summary.lm" gives:
>> Error in getClass(class(object)) : "summary.lm" is not a defined class
>>
>> Is this a miss on my end ?
>>
>>
>>> x <- seq(1, 10)
>>> show(x)
>>
>> [1] 1 2 3 4 5 6 7 8 9 10
>>>
>>> y <- runif(10)
>>> fit <- lm(y ~ x)
>>> show(fit)
>>
>> Call:
>> lm(formula = y ~ x)
>>
>> Coefficients:
>> (Intercept) x
>> 1.04938 -0.08869
>>
>>> show(summary(fit))
>>
>> Error in getClass(class(object)) : "summary.lm" is not a defined class
>>>
>>> class(summary(fit))
>>
>> [1] "summary.lm"
>>>
>>> class((fit))
>>
>> [1] "lm"
>>>
>>> getClass("lm")
>>
>> Virtual Class
>>
>> No Slots, prototype of class "S4"
>>
>> Extends: "oldClass"
>>
>> Known Subclasses:
>> Class "mlm", directly
>> Class "aov", directly
>> Class "glm", directly
>> Class "maov", by class "mlm", distance 2
>> Class "glm.null", by class "glm", distance 2
>>>
>>> getClass("summary.lm")
>>
>> Error in getClass("summary.lm") : "summary.lm" is not a defined class
>>>
>>> sessionInfo()
>>
>> R version 2.7.0 Patched (2008-06-07 r45877)
>> i686-pc-linux-gnu
>>
>> locale:
>>
>> LC_CTYPE=en_US.UTF-8;LC_NUMERIC=C;LC_TIME=en_US.UTF-8;LC_COLLATE=en_US.UTF-8;LC_MONETARY=C;LC_MESSAGES=en_US.UTF-8;LC_PAPER=en_US.UTF-8;LC_NAME=C;LC_ADDRESS=C;LC_TELEPHONE=C;LC_MEASUREMENT=en_US.UTF-8;LC_IDENTIFICATION=C
>>
>> attached base packages:
>> [1] stats graphics grDevices utils datasets methods base
>>
>>
>> Laurent
>>
>> ______________________________________________
>> R-devel@r-project.org mailing list
>> https://stat.ethz.ch/mailman/listinfo/r-devel
>>
>
> --
> Brian D. Ripley, [EMAIL PROTECTED]
> Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
> University of Oxford, Tel: +44 1865 272861 (self)
> 1 South Parks Road, +44 1865 272866 (PA)
> Oxford OX1 3TG, UK Fax: +44 1865 272595
>
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