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FAO GAEZ Agro-Ecological Zone Legend

Source: R/env_data_collection_src.R
aez_legend.Rd

Returns the class table used to decode GAEZ agro-ecological zone raster values into human-readable zone names.

Usage

aez_legend(classes = 57)

Arguments

classes

integer. Which legend to return. Currently only 57 (the GAEZ v4 57-class AEZ layer) is built in.

Value

A data.frame with code, label, thermal, moisture and arable (logical; FALSE for water, urban, barren and the constraint classes).

Details

Verify before relying on these labels. FAO has revised AEZ class definitions between GAEZ releases. The table here follows the GAEZ v4 documentation, but if your raster came from a different release the codes may not line up. get_AEZ will warn when a raster contains codes that are absent from the legend – that warning is the signal to check.

See also

get_AEZ

Examples

leg <- aez_legend()
head(leg)
#>   code                        label thermal  moisture arable
#> 1    1  Tropics, lowland; semi-arid Tropics semi-arid   TRUE
#> 2    2  Tropics, lowland; sub-humid Tropics sub-humid   TRUE
#> 3    3      Tropics, lowland; humid Tropics     humid   TRUE
#> 4    4  Tropics, lowland; per-humid Tropics per-humid   TRUE
#> 5    5 Tropics, highland; semi-arid Tropics semi-arid   TRUE
#> 6    6 Tropics, highland; sub-humid Tropics sub-humid   TRUE
table(leg$thermal)
#> 
#>                Arctic / very cold   Barren / very sparse vegetation 
#>                                 1                                 1 
#>                            Boreal                            Desert 
#>                                 8                                 4 
#>           Land with poor drainage Land with severe soil constraints 
#>                                 1                                 1 
#>           Land with steep terrain            No data / unclassified 
#>                                 1                                 1 
#>                    Protected area                        Subtropics 
#>                                 1                                16 
#>                         Temperate                           Tropics 
#>                                12                                 8 
#>                  Urban / built-up                      Water bodies 
#>                                 1                                 1