[R] Map of Italy data filled at the level of the province

[francesca Pancotto]

Dear Users
I am very new to the use of ggplot. I am supposed to make a plot of 
Italian provinces in which I have to fill the color of some provinces 
with the values of a variable(I do not provide the data because it is irrelevant which data to use).

Right now I explored the function map in maps package thanks to which I managed to plot
the map of Italy with provinces borders and select only those provinces contained in the 
vector nomi(which is just a list of character elements with the names of the provinces which are 
just like counties in the US).

map("italy",col=1:20, regions=nomi)

The problem is to fill the provinces level with the values of a variable that is the variable of interest:
I found a series of examples based on US data extracted from very hard to get databases.

Can anyone provide an easy example where to start from?

Thanks in advance
Francesca

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Francesca Pancotto
Professore Associato di Politica Economica
Università degli Studi di Modena e Reggio Emilia
Palazzo Dossetti - Viale Allegri, 9 - 42121 Reggio Emilia
Office: +39 0522 523264
Web: https://sites.google.com/site/francescapancotto/
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