A data.frame with various properties of SN/CBS themes.
The filter is specified with <column_name> = <values> in which <values> is a character vector.
Rows with values that are not part of the character vector are not returned.
Arguments
...
Use this to add a filter to the query e.g. get_themes(ID=10).
select
character vector with names of wanted properties. default is all
verbose
Print extra messages what is happening.
cache
Should the result be cached?
base_url
optionally specify a different server. Useful for
third party data services implementing the same protocal.