mosaic (version 0.14)

sp2df: Transforms a shapefile into a dataframe

Description

This function takes in a shapefile (formal class of SpatialPolygonsDataFrame) and transforms it into a dataframe

Usage

sp2df(map, ...)

Arguments

map

A map object of class SpatialPolygonsDataFrame

...

Other arguments, currently ignored

Value

A dataframe, in which the first 7 columns hold geographical information (ex: long and lat)

Examples

## Not run:  
# if(require(maptools)) {
#   data(wrld_simpl)
#   worldmap <- sp2df(wrld_simpl)
# }
# 
# if ( require(ggplot2) && require(maptools) ) { 
#   data(wrld_simpl)
#   World <- sp2df(wrld_simpl)
#   World2 <- merge(World, Countries, by.x="NAME", by.y="maptools", all.y=FALSE)
#   Mdata <- merge(Alcohol, World2, by.x="country", by.y="gapminder", all.y=FALSE) 
#   Mdata <- Mdata[order(Mdata$order),]
#   qplot( x=long, y=lat, fill=ntiles(alcohol,5), 
#          data=subset(Mdata, year==2008), group = group, 
#                      geom="polygon")
# }
# ## End(Not run)