[R] upgraded maps database for italy?

[Greg Snow]

If I remember correctly, the maps package only has a few dedicated maps that works with it.  The maptools package has similar (but not exactly the same) functionality and can work with shapefiles that are more commonly available.  Maptools also integrates nicely with the sp and related packages that give many more options for working with the maps.

For the 2nd question, I would suggest plotting the map first using the province, then plot a second map over the top using the information on the regioni using a different color/line thickness for the boarders and no fill (so that the province show through).  This requires having 2 different map files, one with province and one with regioni information (there may be a better way with overlaying information, but this method works without having to think about it too much).

Hope this helps,

--
Gregory (Greg) L. Snow Ph.D.
Statistical Data Center
Intermountain Healthcare
greg.snow at imail.org
(801) 408-8111



> -----Original Message-----
> From: r-help-bounces at r-project.org
> [mailto:r-help-bounces at r-project.org] On Behalf Of livio spam
> Sent: Friday, September 05, 2008 12:24 PM
> To: r-help at r-project.org
> Subject: [R] upgraded maps database for italy?
>
> Dear UseRs,
> I'm using the library maps. I'm drawing maps of Italy. The
> map available for this library were prepared around *1989*:
> "This italy database comes from the NUTS III (Tertiary
> Administrative Units of the European Community) database of
> the United Nations Environment Programme (UNEP) GRID-Geneva
> data sets. These were prepared around *1989*"
> [cited: help("italy")].
> The details of this map is by "province", which is not maybe
> optimal, but is OK.
> However, after 1989 many new province are born. So for
> example the new provincia of Rimini has born and the sardinan
> Island has doubled them.
>
> Some of you do know how to get upgraded maps of italy? I
> think it would useful for all Italian mapers.
>
> The second question is as follow: Italy is subdivided in
> "regioni". Each "regione" is a set of many province; so, if I
> want to plot map region-based index, how can I omit the
> borders of prince belonging to the same "regione"?
> so, how plot maps to a higher unit level?
>
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