[R] weird error: Coercing LHS to a list

Nick Matzke matzke at berkeley.edu
Sun Jun 20 23:40:40 CEST 2010


Wow, did I stump everyone with this?  Mostly I'd just like 
to build a class without getting the error below.

Cheers!
Nick

Nick Matzke wrote:
> Hi all!  I'm trying to build a simple class, but I'm getting a weird error.
> 
> E.g. if I do:
> 
> ==========
> gregion = setClass("gregion", contains = "data.frame", 
> representation(name = "character", poly.x = "numeric", poly.y = 
> "numeric" ))
> 
> gregion$name = "North America"
> ==========
> 
> 
> Then I get this message:
> 
> Warning message:
> In gregion$name = "North America" : Coercing LHS to a list
> 
> ...although it appears to work, I'd rather not have disturbing 
> mysterious error messages (what's LHS?)...
> 
> Cheers!
> Nick
> 
> 
> 

-- 
====================================================
Nicholas J. Matzke
Ph.D. Candidate, Graduate Student Researcher
Huelsenbeck Lab
Center for Theoretical Evolutionary Genomics
4151 VLSB (Valley Life Sciences Building)
Department of Integrative Biology
University of California, Berkeley

Graduate Student Instructor, IB200A
Principles of Phylogenetics: Systematics
http://ib.berkeley.edu/courses/ib200a/index.shtml

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Mailing address:
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3060 VLSB #3140
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-----------------------------------------------------
"[W]hen people thought the earth was flat, they were wrong. 
When people thought the earth was spherical, they were 
wrong. But if you think that thinking the earth is spherical 
is just as wrong as thinking the earth is flat, then your 
view is wronger than both of them put together."

Isaac Asimov (1989). "The Relativity of Wrong." The 
Skeptical Inquirer, 14(1), 35-44. Fall 1989.
http://chem.tufts.edu/AnswersInScience/RelativityofWrong.htm



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