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Normalise a soil-group label across the three NFert conventions

Source: R/soil_group_utils.R
normalise_soil_group.Rd

NFert tables use three parallel naming conventions for the DPI 2026 texture grouping:

Usage

normalise_soil_group(x)

Arguments

x

Character string. Soil group name in any supported convention.

Value

A list with id_rag (1 = Sandy, 2 = Loamy, 3 = Clay), en (canonical English), it_plural, it_singular.

Details

  • English (legacy NFert 0.1.0): "Sandy textures", "Loamy textures", "Clay textures".

  • Italian plural (canonical DPI; foglio B, SO, Gri_K): "Sabbiosi", "Medio impasto", "Argillosi e limosi".

  • Italian singular adjective (foglio Ragg_Tes): "Sabbioso", "Franco", "Argilloso".

This helper accepts any of these forms (case-insensitive) and returns the canonical English form (used by NFert >= 0.4.0 lookup tables) plus the universal ID_Rag integer key used internally to join the lookup tables.

Examples

normalise_soil_group("Loamy textures")
#> $id_rag
#> [1] 2
#> 
#> $it_plural
#> [1] "Medio impasto"
#> 
#> $it_singular
#> [1] "Franco"
#> 
#> $en
#> [1] "Loamy textures"
#> 
normalise_soil_group("Medio impasto")
#> $id_rag
#> [1] 2
#> 
#> $it_plural
#> [1] "Medio impasto"
#> 
#> $it_singular
#> [1] "Franco"
#> 
#> $en
#> [1] "Loamy textures"
#> 
normalise_soil_group("Franco")
#> $id_rag
#> [1] 2
#> 
#> $it_plural
#> [1] "Medio impasto"
#> 
#> $it_singular
#> [1] "Franco"
#> 
#> $en
#> [1] "Loamy textures"
#>