On Mon, 18 Feb 2008, Martin Maechler wrote:
MS == Markus Schmidberger [EMAIL PROTECTED]
on Fri, 15 Feb 2008 15:47:16 +0100 writes:
MS Hello, I built a package, everything was working very
MS well. Now I included a NAMESPACE to export only some
MS variables. (export(f, g, ...) ) Everything is working
MS fine, except one function. There I get an error:
MS Fehler in UseMethod(open) : keine anwendbare Methode
MS für open
MS In this function I use the function open to generate
MS an output bar.
MS * if (verbose) { pbt - new(ProgressBarText,
MS length(ids), barsteps = as.integer(20)) open(pbt) }
MS for (i in seq(along=ids)) {
MS if (verbose) { update(pbt) }
MS How I have to change my NAMESPACE file to fix this
MS problem?
You also have to export the *methods* for the open() generic:
exportMethods(open)
He doesn't say he created any. I think more likely he did not import the
S4 generics methods from the BioC package 'affy'. Since open() is in
the base namespace, it will be found instead of any such-named function
in another package unless imported.
But really we need a lot more information: package 'affy' is not even
mentioned, if it is indeed the source of class ProgressBarText.
As so often, the output of sessionInfo() (as mentioned in the posting
guide) is the 'at a minimum' information needed.
MS Thanks Markus Schmidberger
you're welcome,
Martin Mächler
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