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51 lines
2.2 KiB
51 lines
2.2 KiB
% Generated by roxygen2: do not edit by hand
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% Please edit documentation in R/states_sf.r
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\name{usa_sf}
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\alias{usa_sf}
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\title{Retreive a U.S. state composite map, optionally with a projection, as a simplefeature}
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\usage{
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usa_sf(proj = c("longlat", "laea", "lcc", "eqdc", "aeqd"))
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}
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\arguments{
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\item{proj}{if anything but \code{longlat} is specified, the shapefile will
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be pre-projected before being returned}
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}
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\description{
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The \code{proj} parameter is intende to simplify usage for those using base
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plotting. If anything but \code{longlat} is specified the composite map
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will be pre-projected to those
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}
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\details{
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This is what's the object looks like:
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\preformatted{
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Observations: 51
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Variables: 14
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$ geo_id <fctr> 0400000US04, 0400000US05, 0400000US06, 0400000US08, 0400...
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$ fips_state <fctr> 04, 05, 06, 08, 09, 11, 13, 17, 18, 22, 27, 28, 30, 35, ...
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$ name <fctr> Arizona, Arkansas, California, Colorado, Connecticut, Di...
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$ lsad <fctr> , , , , , , , , , , , , , , , , , , , , , , , , , , , , ,
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$ census_area <dbl> 113594.084, 52035.477, 155779.220, 103641.888, 4842.355, ...
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$ iso_3166_2 <fctr> AZ, AR, CA, CO, CT, DC, GA, IL, IN, LA, MN, MS, MT, NM, ...
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$ census <int> 6392017, 2915918, 37253956, 5029196, 3574097, 601723, 968...
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$ pop_estimataes_base <int> 6392310, 2915958, 37254503, 5029324, 3574096, 601767, 968...
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$ pop_2010 <int> 6411999, 2922297, 37336011, 5048575, 3579345, 605210, 971...
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$ pop_2011 <int> 6472867, 2938430, 37701901, 5119661, 3590537, 620427, 981...
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$ pop_2012 <int> 6556236, 2949300, 38062780, 5191709, 3594362, 635040, 991...
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$ pop_2013 <int> 6634997, 2958765, 38431393, 5272086, 3599341, 649111, 999...
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$ pop_2014 <int> 6731484, 2966369, 38802500, 5355866, 3596677, 658893, 100...
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$ geometry <list> [-112.53859, -112.53454, -112.36895, -112.35769, -111.41...#' }
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A reference GeoJSON file is provided in the following location (i.e. you can use
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it in any mapping program):
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\preformatted{
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system.file("extdata/composite_us_states.geojson.gz", package="albersusa")
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}
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}
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\examples{
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library(sf)
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plot(usa_sf()) # these take a while to render
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plot(usa_sf("laea"))
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}
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