[R] Variable name with a '-'

peter dalgaard pdalgd at gmail.com
Sat Sep 10 19:31:27 CEST 2011

On Sep 10, 2011, at 16:33 , Adam Moore wrote:

> My statistics teacher wrote a textbook and included .rdata files for the
> problem set data. I downloaded these and opened one of them up. Then I used
> the ls() command, and it gave me this:
>> ls()
> [1] "ex02-12"
> However, when i try to use the object, it interprets it as ex02 - 12, and I
> get the following error:
>> ex02-12
> Error: object 'ex02' not found
> I don't know why my teacher has named everything this way, but she has. How
> do I access the object?

Use backticks, that's what they are for: `ex02-12`. Or get("ex02-12"). Possibly save it under a new name to preserve your sanity. 

> Thanks,
> Adam Moore
> 	[[alternative HTML version deleted]]
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Peter Dalgaard, Professor,
Center for Statistics, Copenhagen Business School
Solbjerg Plads 3, 2000 Frederiksberg, Denmark
Phone: (+45)38153501
Email: pd.mes at cbs.dk  Priv: PDalgd at gmail.com
"Døden skal tape!" --- Nordahl Grieg

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