On Tue, 10 Jun 2008, Laurent Gautier wrote:
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) ?
print() calls show() for S4 objects (with no additional arguments).
I agree show() ought to do what it is documented to, but calling it on
non-S4 objects is inefficient.
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
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--
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
--
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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