Join two `metamet` objects

Combine two `metamet` objects by performing a full join on `site` and the time variable. If the time variable names differ between the two objects, `mm2`'s time column and corresponding metadata row are renamed to match `mm1` prior to joining.

Usage

join(mm1, mm2)

Arguments

mm1

A `metamet` object (a list containing at least `dt`, `dt_meta`, and `dt_site`).

mm2

A `metamet` object to be joined onto `mm1`. Values from `mm2` take precedence when conflicts occur.

Value

A `metamet` object with merged `dt`, `dt_meta`, and `dt_site` (the returned object has the structure of `mm2` but contains the combined information from both inputs).

Details

The join is performed using `powerjoin::power_full_join()` for the main data table (`dt`), the metadata table (`dt_meta`) and the site table (`dt_site`). Conflict resolution uses `coalesce_yx`, which prefers values from the second object (`mm2`) when both objects contain differing values for the same field.

Examples

# mm_joined <- join(mm1, mm2)