[R-sig-Geo] what's wrong with my programs?

[Roger Bivand]

On Sun, 18 Jun 2006, zhijie zhang wrote:

> Dear Rusers,
>   I'm useing spatial package to get a rectangular, but the map seems to be
> wrong,and it maybe need to adjust some parameters that i don't know.

I'll get back to you tomorrow with specific suggestions. ppregion() is not 
a productive route to take for your problem. If it's OK with you, I'll 
reply to the list but including your off-list message to me explaining the 
interesting research context for your question.

Roger

> 
> My pograms:
> library(spatial)
> ppregion(xl=-8.75,xu=133.45,yl=-15.15,yu=187.05)
> poly<-ppgetregion()
> polymap(poly)
> #the programs goes correctly, but the map seems not very good. Please paste
> the programs in your R, then you'll see the problems.
> BTW, i have a points dataset with no corresponding polygon, so i  want to
> generate a polygon. About this operation, is there any good method to do?
> Thanks very much! any suggestions are great welcome!
> 
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> 
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-- 
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