[R] upgraded maps database for italy?
Ray Brownrigg
ray at mcs.vuw.ac.nz
Fri Sep 5 23:19:39 CEST 2008
The "italy" (and "france") databases only exists in the maps package because somebody
supplied me with the data in an appropriate format - latitude/longitude pairs separately
for each polygon (provinces in this case). If you have the appropriate data for what you
want i.e. updated provinces and regioni, then I could generate a new database (no promises
as to how quickly this will happen though). You *could* do it yourself if you read all
the references contain in the maps documentation, but I wouldn't recommend learning how to
do this unless you intend doing it frequently.
However as Greg Snow comments, maptools may well be a better way to go and uses a more
generally available data format. The maps package, which traces its roots back to 'New' S
(the Blue book), is rather showing its age, but there is no reason to delete it while some
people still find it useful.
Regards,
Ray Brownrigg
livio spam wrote:
> 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?
>
> [[alternative HTML version deleted]]
>
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