Get Easting and Northing coordinates from DEFRASource:
This function takes as input the UK AIR ID and returns Easting and Northing coordinates (British National Grid, EPSG:27700).
contains the station identification code defined by DEFRA. It can be: a) an alphanumeric string, b) a vector of strings or c) a data frame. In the latter case, the column containing the codes should be named "UK.AIR.ID", all the other columns will be ignored.
A data.frame containing at least five columns named "UK.AIR.ID", "Easting", "Northing", "Latitude" and "Longitude".
If the input is a data frame with some of the columns named "UK.AIR.ID", "Northing" and "Easting", the function only infills missing Northing/Easting values (if available on the relevant webpage).