[R-sig-Geo] historical descriptions for mapping function in R

[Roger Bivand]

On Mon, 24 Oct 2005, Susumu Tanimura wrote:

> Hi there,
> 
> Please someone tell me about the initial release date of maptools and
> friends' packages, history about these packages, or related references for
> citation.  I am writing about a review of mapping function in R for
> Japanese readers.  
> 
> maptools(changes = T) showed only after 0.4-2.
> 
> It is somewhat easy to review the status quo, but hard to find out
> historical descriptions.

My copy of 0.1-alpha is dated 15 August 2000, and was written by Nicholas
Lewin-Koh. It contained the first implementations of read.shape() and
plot.Map(). The package was first published on CRAN in September 2003,
see http://cran.r-project.org/src/contrib/Archive/M/. The polylist S3
objects were moved to maptools from spdep in 2003.

Hope this helps,

Roger

> 
> Thanks,
> 
> --
> Susumu Tanimura
> 
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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