On 10/11/2006 2:48 PM, Seth Falcon wrote:
> Hi,
>
> Reading help("Documentation"), I'm led to believe that a help call
> like:
>
> ?myFun(x, sqrt(wt))
>
> Will search for help on the appropriate method in the case that myFun
> is generic. This isn't working for me. Here is an example using the
> Biobase package:
>
> ## If Biobase is not installed
> source("http://bioconductor.org/biocLite.R";)
> biocLite("Biobase")
>
>> library("Biobase")
>> data(sample.ExpressionSet)
>> class(sample.ExpressionSet)
> [1] "ExpressionSet"
> attr(,"package")
> [1] "Biobase"
>> z <- featureNames(sample.ExpressionSet)
>> z[1:2]
> [1] "AFFX-MurIL2_at" "AFFX-MurIL10_at"
>> ?featureNames(sample.ExpressionSet)
> Warning message:
> no method defined for function 'featureNames' and signature 'object =
> "missing"' in: .helpForCall(e1Expr, parent.frame())
> Error in .helpForCall(e1Expr, parent.frame()) :
> no documentation for function 'featureNames' and signature 'object =
> "missing"'
>
>
> Am I expecting the wrong thing or is this broken?
I think it's broken. The line that looks broken is in .helpForCall,
where it has
methods::"elNamed<-"(sigClasses, arg, class(argVal))
Looking at the elNamed<- function, I think this is supposed to be
equivalent to
sigClasses[[arg]] <- class(argVal)
but it is not making any assignment. I don't understand the point of
doing the assignment that way, or why it's not working, so I'll leave
this for someone else.
Duncan Murdoch
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