decimaldegrees: Converter for geographical coordinates from the ECA&D format into decimal degrees
Description
This function takes sexagesimal degrees in the ECA&D format and converts them into decimal degrees.
Initial idea was taken from: https://modtools.wordpress.com/2013/09/25/dms2dec/
Usage
decimaldegrees(dms, sep = ":")
Arguments
dms
ONE ELEMENT from the LAT or LON field in ECA&D listings
sep
the separator between elements, in ECA&D ":"
Value
geographical coordinates (latitude or longitude) in decimal degrees