This package provides functions to simplify the access to the data provided online by the Deutscher Wetterdienst (DWD, https://www.dwd.de). It currently contains a function get_radolan_urls() that returns the internet addresses (Unified Resource Locators, URLs) to the zip files containing rain data from the RADOLAN system in daily or hourly resolution (see https://www.dwd.de/DE/leistungen/radolan/radolan.html).
The function download_radolan() helps you to download these files. But take care, you should restrict the time period as each file contains the data for all of Germany.