[R-sig-Geo] newbie bbox type question

[Roger Bivand]

On Mon, 30 May 2011, Barry Rowlingson wrote:

>
> > plot(as(m, "Spatial"))
>
> Coercion with 'as' seems to fail for me:
>
> > rb=bbox(r)
> > rb
>        min       max
> x -2.840466 -2.342137
> y 54.042700 54.339724
> > as(rb,"Spatial")
>
> Error in as(rb, "Spatial") :
>  no method or default for coercing "matrix" to "Spatial"
>
> but using Spatial() works:
>
> plot(Spatial(rb))

Would plot(as(rb, "Spatial")) work - the object needs to be just "Spatial" 
to just set up the plot device? I didn't check what was what carefully 
enough.

Roger

>
> despite the warning about Spatial being an abstract class...
>
>
>> which drops all the unnecessary stuff. I wasn't sure what was needed,
>> either. It could be an output file with the data reshaped to "wide" from
>> "long", but this is just another guess.
>
> Texas may be awake now, but I think it might be a holiday in the USA...
>
> Barry
>

-- 
Roger Bivand
Economic Geography Section, Department of Economics, Norwegian School of
Economics and Business Administration, Helleveien 30, N-5045 Bergen,
Norway. voice: +47 55 95 93 55; fax +47 55 95 95 43
e-mail: Roger.Bivand at nhh.no