[R] why is 0 not an integer?

[John Kane]

Pesumably because v[1] <- 0 give a numeric result, then the rest of v is coerced into numeric.

Observe

v <- 0:10
class(v)
v[1] <- as.integer(0)
class(v[1])
class(v)

--- On Wed, 8/5/09, Steve Jaffe <sjaffe at riskspan.com> wrote:

> From: Steve Jaffe <sjaffe at riskspan.com>
> Subject: [R]  why is 0 not an integer?
> To: r-help at r-project.org
> Received: Wednesday, August 5, 2009, 4:16 PM
> 
> Why when I assign 0 to an element of an integer vector does
> the type change
> to numeric?
> Here is a particularly perplexing example:
> > v <- 0:10
> > v
>  [1]  0  1  2  3  4  5 
> 6  7  8  9 10
> > class(v)
> [1] "integer"
> > v[1] <- 0
> > class(v)
> [1] "numeric"  #!!
> > 
> 
> -- 
> View this message in context: http://www.nabble.com/why-is-0-not-an-integer--tp24835423p24835423.html
> Sent from the R help mailing list archive at Nabble.com.
> 
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> 


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