Reads one of the coefficient tables shipped as CSV under
inst/extdata/coefs. These tables are small and versioned inside the
package (read at runtime, not stored remotely), so no download is needed.
Examples
whep_coef_table("residue_feed_fraction")
#> # A tibble: 18 × 3
#> region_hanpp feed_use_fraction source
#> <chr> <dbl> <chr>
#> 1 Sub-Saharan Africa 0.4 Lal 2005; McIntire 1992
#> 2 Northern Africa 0.3 Smil 1999; Lal 2005
#> 3 Western Asia 0.3 Smil 1999
#> 4 Southern Asia 0.45 Erenstein 2014; Smil 1999
#> 5 Eastern Asia 0.3 Smil 1999
#> 6 South-Eastern Asia 0.3 Smil 1999
#> 7 Central Asia 0.25 Lal 2005
#> 8 Western Europe 0.15 Krausmann 2008; Smil 1999
#> 9 Eastern Europe 0.2 Krausmann 2008
#> 10 Northern Europe 0.15 Krausmann 2008
#> 11 Southern Europe 0.2 Krausmann 2008
#> 12 Northern America 0.05 Smil 1999
#> 13 Latin America and the Caribbean 0.2 Smil 1999
#> 14 Caribbean 0.2 Smil 1999
#> 15 Oceania 0.05 Smil 1999
#> 16 Australia and New Zealand 0.05 Smil 1999
#> 17 Melanesia 0.1 Smil 1999
#> 18 Global 0.2 default fallback