If subdomain
is one of "kyy"
(Ministry of Environment
and Energy), "ypaat"
(Ministry of Rural Development and Food) or
"emy"
(National Meteorological Service), and timeID is not NULL,
returns a tidy dataframe with the time series values from the corresponding
time series and database of hydroscope.gr. Otherwise gives an error message.
If the time series ID does not exist in the database, or the url from
Hydroscope could not parsed, returns a dataframe with NA values.
The dataframe columns are:
- Date
The time series Dates (POSIXct)
- Value
The time series values (numeric)
- Comment
Comments from Hydroscope (character)