Validate national net trade balance — validate_national

Validates the provincial GRAFS model by comparing Spain's national net trade computed bottom-up (summing provincial net balances per item) against official FAOSTAT figures. Because internal inter-province flows cancel out pairwise, the sum of provincial net balances equals Spain's true international net trade.

Usage

validate_national_trade(n_prov_destiny = NULL, example = FALSE)

Arguments

n_prov_destiny: Optional pre-computed output from create_n_prov_destiny(). If NULL, calls that function internally.
example: If TRUE, return a small hardcoded output without downloading remote data. Default is FALSE.

Value

A tibble with columns year, item, net_prov, net_fao, and diff_net (all in MgN).

Examples

validate_national_trade(example = TRUE)
#> # A tibble: 6 × 5
#>    year item                 net_prov net_fao diff_net
#>   <dbl> <chr>                   <dbl>   <dbl>    <dbl>
#> 1  2000 Barley and products    56943.   2175.  54767. 
#> 2  2000 Beans                  -1236.  -1459.    223. 
#> 3  2000 Bovine Meat             1601.   1569.     32.4
#> 4  2000 Cassava and products   -1673.  -1738.     65.2
#> 5  2000 Cereals, Other          1635.   -176.   1811. 
#> 6  2000 Coffee and products    -2009   -2328.    319.