return a natural earth filename based on arguments
return a natural earth filename based on arguments
returns a string that can then be used to download the file.
ne_file_name( scale =110, type ="countries", category = c("cultural","physical","raster"), full_url =FALSE)
Arguments
scale: The scale of map to return, one of 110, 50, 10 or small, medium, large.
type: type of natural earth file to download one of 'countries', 'map_units', 'map_subunits', 'sovereignty', 'states' OR the portion of any natural earth vector url after the scale and before the . e.g. for 'ne_50m_urban_areas.zip' this would be 'urban_areas' OR the raster filename e.g. for 'MSR_50M.zip' this would be 'MSR_50M'
category: one of natural earth categories : 'cultural', 'physical', 'raster'
full_url: whether to return just the filename (default) or the full URL needed for download
Returns
string
Details
Note that the filename of the requested object will be returned if load = FALSE.
Examples
ne_name <- ne_file_name(scale =110, type ="countries")ne_url <- ne_file_name(scale =110, type ="countries", full_url =TRUE)
See Also
ne_load, pre-downloaded data are available using ne_countries, ne_states. Other geographic data are available in the raster package : getData.