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USA borders
Short title:
USA_borders USA borders projected in the AEA coordinate system. download.file("http://www.census.gov/geo/cob/bdy/st/st00shp/st99_d00_shp.zip", destfile=paste(getwd(), "/usa_borders.zip", sep="")) unzip(zipfile="usa_borders.zip", exdir=getwd()) unlink("usa_borders.zip") # read to R: usa_borders.ll <- readOGR("st99_d00.shp", "st99_d00") proj4string(usa_borders.ll) <- CRS("+proj=longlat +ellps=WGS84") usa_borders.ll <- as(usa_borders.ll, "SpatialLinesDataFrame") AEA <- "+proj=aea +lat_1=29.5 +lat_2=45.5 +lat_0=23 +lon_0=-96 +x_0=0 +y_0=0 +ellps=GRS80 +datum=NAD83 +units=m +no_defs" USA.borders <- spTransform(usa_borders.ll, CRS(AEA)) save(usa_borders.ll, file="usa_borders.RData") Available layers:
Spatial structure:
Formal class 'SpatialLinesDataFrame' [package "sp"] with 4 slots ..@ data :'data.frame': 273 obs. of 10 variables: ..@ lines :List of 273 ..@ bbox : num [1:2, 1:2] -179.1 17.9 179.8 71.4 .. ..- attr(*, "dimnames")=List of 2 ..@ proj4string:Formal class 'CRS' [package "sp"] with 1 slots
proj4:
+proj=aea +lat_1=29.5 +lat_2=45.5 +lat_0=23 +lon_0=-96 +x_0=0 +y_0=0 +ellps=GRS80 +datum=NAD83 +units=m +no_defs
Location:
United States
38° 53' 42.4032" N, 77° 2' 10.9176" W
Data owner:
U.S. Dept of Commerce
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