get_country: Determines Country Names for Coordinate Points Located in the...
In mcmventura/stlocationqc: C3S Quality Control of Meteorological Stations Location

Description Usage Arguments Details References Examples

Given a list of geographic coordinates in the continent, determines the country name for each coordinate point. First uses a SpatialPolygonsDataFrame with 10 m precision to calculate the country names. Then if there are still points without a name assigned, uses a SpatialPolygonsDataFrame with 50 m precision, thus trying to calculate the name for less accurate points.

1	get_country(icoords)

icoords

data frame with three columns: id | lon | lat where: 'id' is the row identifier for the coordinates in the original list of coordinates, 'lon' is the longitude in the range (-180, +180) and 'lat' is the latitude. Both coordinates are in decimal degrees.

Input:

The output of test_geocoord - 'coords_ok' -, or the output of get_lon180 - 'coords_lon180', i.e., a data frame with three columns: id | lon | lat. To use the present function it is necessary that the coordinates do not have any errors or missing values. This requires previous running of test_geocoord or get_lon180 that in addition to testing the coordinates, creates the 'id' which is the row identifier for the coordinates in the original list of coordinates. After running sequentially get_country, get_country_shoreline and get_sea to assign the geographic names, the 'id' is necessary to display the coordinates in the initial order at the end of the process (which consists of a sucessive elimination of missing names), with or without all the names assigned.

Output:

A text file with all the points for which a country name was determined. That file has the following header: id | lon | lat | country | sovereignt | adm0_a3 | name_de | name_es | name_fr | name_pt.
A text file with the missing country names, if they exist.
A .RData file with the output data frame(s). The data frame 'countries' has the header id | lon | lat | country | sovereignt | iso3 | subregion | continent. The data frame 'miss_countries' has the header id | lon | lat and it is the input of get_country_shoreline to determine the missing country names or the input of get_sea, if the user wants to verify if the still unamed points fall into to the sea and calculate the sea name were they are located.

Made with Natural Earth. Free vector and raster map data @ naturalearthdata.com.

## Not run: 
## First run
get_lon180(coords = ispd)
## Or
test_geocoord(coords = eraclim_uao_fp)
## Then run
get_country(icoords = coords_ok)

## End(Not run)