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?
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