Create list of market identifiers.

create_markets(geog_id, time_id)

Arguments

geog_id

Variable that represents geographical market identifier as a string.

time_id

Variable that represents time identifier as a string.

Value

A list containing geog_id and time_id.

Examples

# cross section data create_markets(geog_id = "state", time_id = NULL)
#> $geog_id #> [1] "state" #>
# time series data create_markets(geog_id = NULL, time_id = "year")
#> $time_id #> [1] "year" #>
# panel data create_markets(geog_id = "state", time_id = "year")
#> $geog_id #> [1] "state" #> #> $time_id #> [1] "year" #>