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List:       r-devel
Subject:    Re: [Rd] svd() results should have a class
From:       Robert Harlow <rharlow86 () gmail ! com>
Date:       2022-06-23 23:53:39
Message-ID: CAHdfS95A=m78=5-KyfL8FhsEyq3iVMMb1ZP9raEF+OggpQ8+hg () mail ! gmail ! com
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Don't have a view on whether it makes sense in base R or not, but WRE
section 7.1 may be helpful to you:
https://cran.r-project.org/doc/manuals/R-exts.html#Adding-new-generics.

It's not uncommon for packages to want to make base methods generic and the
above link provides advice on how to do so.

Bob

On Thu, Jun 23, 2022 at 12:07 PM Lenth, Russell V <russell-lenth@uiowa.edu>
wrote:

> Dear R-Devel,
>
> I noticed that if we run base::svd(x), we obtain an object of class
> "list". Shouldn't there be an "svd" class, in case someone (e.g., me) wants
> to write methods for singular value decompositions? Note that other
> matrix-decomposition routines like qr() and eigen() each return objects
> having those names.
>
> Thanks
>
> Russ Lenth
> Russell-lenth@uiowa.edu
>
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>
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>

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