From f.harrell at vanderbilt.edu  Wed Apr 24 15:59:25 2013
From: f.harrell at vanderbilt.edu (Frank Harrell)
Date: Wed, 24 Apr 2013 06:59:25 -0700 (PDT)
Subject: [Rd] Solved and Question: Problem with S3 method dispatch and
	NAMESPACE
In-Reply-To: <1366773758314-4665179.post@n4.nabble.com>
References: <1366773758314-4665179.post@n4.nabble.com>
Message-ID: <1366811965136-4665216.post@n4.nabble.com>

I found that package quantreg has created a new generic for latex() [I wish
it hadn't; this has been a generic in Hmisc for almost 2 decades].  When I
require(quantreg) after loading rms, latex(anova.rms object) dispatches
latex.default, but everything is fine if I don't load quantreg.  rms has
import(Hmisc) in NAMESPACE and is loaded before quantreg, hence the
conflict.  How do I make the generic from Hmisc take precedence?
Thanks
Frank

Frank Harrell wrote
> I have updated the rms package to extensively use NAMESPACE.  I cannot get
> certain S3 methods to dispatch.  For example I have in NAMESPACE
> 
> S3method(anova, rms)
> S3method(latex, anova.rms)
> 
> anova.rms produces an object of class "anova.rms" and there is a
> latex.anova.rms function in rms.  But when I do latex(anova(fit)) I get an
> invocation of latex.default.
> 
> I have tried using "anova.rms" and `anova.rms` in S3method() to no avail.
> 
> Any help appreciated.  I'm using R 2.15.3
> Frank





-----
Frank Harrell
Department of Biostatistics, Vanderbilt University
--
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[Rd] Solved and Question: Problem with S3 method dispatch and NAMESPACE
Frank Harrell