Fast query of WITCH results files

Returns a formatted data.table from a list of results files. It adds a scenario column

Usage

witch_query(
  item,
  resgdx,
  filter = list(),
  scenarios = guess_scenario(resgdx),
  add_year = "t30",
  keep_gdx = FALSE,
  keep_t = FALSE,
  year_mapping = witch_period_year,
  valigdx = NULL,
  histgdx = NULL,
  ...
)

Arguments

item: parameter or variable name
resgdx: list of WITCH results gdx
filter: named list of filter (eg. list(e="CO2",n="brazil,usa")). if n contains "world", then the sum of n is computed.
scenarios: vector of scenario names in same order than resgdx
add_year: convert t into year. Either "t30" or the name of a mapping in time_mappings.
keep_gdx: keep gdx file name in the result
keep_t: keep t in the result
year_mapping: a mapping table to translate t into year. Reserved for future use; currently ignored, as add_year selects the mapping.
valigdx: optional gdx file with validation data. Reserved for future use; currently ignored.
histgdx: optional gdx file with historical data. Reserved for future use; currently ignored.
...: additional parameters to send to batch_extract

Value

A data.table with the index columns of item and a value column, restricted to filter. A scenario column is added when scenarios is not NULL, and a year column when add_year is not NULL and the item has a t index. The gdx and t columns are dropped unless keep_gdx, respectively keep_t, is TRUE.

Usage

Arguments

Value

See also