Description Usage Format Examples
North America polygon
1 | data("naMap")
|
The format is SpatialPolygonsDataFrame, with extent of -164.7, -51.7, 21, 73 (xmin, xmax, ymin, ymax). coord. ref. is "+proj=longlat +datum=WGS84 +no_defs +ellps=WGS84 +towgs84=0,0,0"
1 2 |
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