Re: [R] barplot and map overlay

From: Greg Snow <>
Date: Wed, 13 Jun 2007 08:27:38 -0600

Look at the subplot function in the TeachingDemos package.

-----Original Message-----
From: "Héctor Villalobos" <> To: "" <> Sent: 6/11/07 5:48 PM
Subject: [R] barplot and map overlay


I wonder if it is possible with the graphics package to overlay one or several plots (barplots, for example) over a map. Data for the map is in a data frame with the latitude and longitude coordinates, and then:

> plot(map$long, map$lat, type ="l")

produces the map. I want to put each barplot in specific locations on the map, namely at the center of "statistical squares".

I´ve seen an example in Paul Murrell´s "R Graphics" book that seems appropriate (grid package), but a bit complicated.

Thanks a lot for any advice.


Héctor Villalobos <>
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