# Começando com soilKey (PT-BR)

`soilKey` faz classificação automática de perfis de solo nos três sistemas canônicos: WRB 2022 (4ª edição), SiBCS 5ª ed. (Embrapa, 2018) e USDA Soil Taxonomy 13ª ed. (USDA-NRCS, 2022). A chave taxonômica em si é implementada como código R determinístico orientado por regras YAML versionadas; extração via vision-language model, priors espaciais (SoilGrids) e predição de atributos via OSSL ficam ao lado da chave como módulos separados, nunca dentro dela.

Esta vinheta é uma adaptação para PT-BR de `v01_getting_started`. O conteúdo cobre o mesmo material; preferimos PT-BR aqui porque a comunidade brasileira de pedologia é grande e quase toda a literatura SiBCS é escrita em português.

# 0. O começo de 30 segundos

Se você só quer ver `soilKey` funcionando ponta-a-ponta em um perfil real, sem escrever código R, há dois caminhos.

## A. Interface Shiny (sem código)

    library(soilKey)
    run_classify_app()   # abre um app Shiny em uma única tela no navegador

Faça upload de um CSV (uma linha por horizonte) ou edite manualmente, clique em Classify, e leia os nomes WRB / SiBCS / USDA junto com o key trace determinístico e a evidence grade.

## B. Uma chamada R, uma fixture

    library(soilKey)

    pedon <- make_ferralsol_canonical()   # Latossolo Vermelho canônico
    classify_wrb2022(pedon, on_missing = "silent")$name
    #> [1] "Geric Ferric Rhodic Ferralsol (Clayic, Humic, Eutric, Ochric, Rubic)"
    classify_sibcs(pedon)$name
    #> [1] "Latossolos Vermelhos Distroficos tipicos"
    classify_usda(pedon, on_missing = "silent")$name
    #> [1] "Rhodic Hapludox"

É o pacote inteiro: `PedonRecord` entra, classificação sai. As seções seguintes mostram como construir o seu próprio pedon e como os módulos laterais (VLM, espacial, espectral) se conectam.

# 1. Construindo um PedonRecord do zero

`PedonRecord` é a estrutura central de dados. Ele agrupa:

- Metadados de sítio (id, lat/lon, país, material de origem, …)
- Tabela de horizontes com o esquema canônico fixo (veja `horizon_column_spec()` para a lista completa de colunas)
- Espectros opcionais (Vis-NIR / SWIR / MIR)
- Imagens opcionais (foto de perfil)
- Documentos opcionais (PDF / field report)
- Log de proveniência por atributo: cada valor numérico ou categórico carrega uma tag `source` ∈ {`measured`, `predicted_spectra`, `extracted_vlm`, `inferred_prior`, `user_assumed`}

    meu_pedon <- PedonRecord$new(
      site = list(
        id              = "exemplo-001",
        lat             = -22.5,
        lon             = -43.7,
        country         = "BR",
        parent_material = "gnaisse"
      ),
      horizons = data.frame(
        top_cm      = c(0,  15, 65, 130),
        bottom_cm   = c(15, 65, 130, 200),
        designation = c("A", "AB", "Bw1", "Bw2"),
        munsell_hue_moist    = rep("2.5YR", 4),
        munsell_value_moist  = c(3, 3, 4, 4),
        munsell_chroma_moist = c(4, 6, 6, 6),
        clay_pct = c(50, 55, 60, 60),
        silt_pct = c(15, 10, 8,  8),
        sand_pct = c(35, 35, 32, 32),
        cec_cmol = c(8, 5.5, 5.0, 4.8),
        bs_pct   = c(24, 14, 13, 13),
        ph_h2o   = c(4.8, 4.7, 4.8, 4.9),
        oc_pct   = c(2.0, 0.6, 0.3, 0.2)
      )
    )

Ao chamar qualquer `classify_*()` em cima desse pedon, soilKey lê os dados, anda a chave taxonômica, e retorna um objeto `ClassificationResult` com:

- O nome atribuído (`Latossolos Vermelhos Distroficos tipicos` na SiBCS, por exemplo)
- O trace da chave (quais RSGs / Ordens foram testadas, quais diagnósticos passaram)
- O evidence grade A-D resumindo a qualidade dos dados que produziram a decisão
- A lista de atributos faltantes que, se medidos, mudariam ou refinariam a classificação

# 2. Classificando nos três sistemas

A interface é simétrica: um `PedonRecord` entra, um `ClassificationResult` sai. As três funções aceitam um argumento `on_missing` que controla o que fazer quando atributos críticos não estão presentes:

- `"warn"` (padrão): avisa, classifica com base no que tem
- `"silent"`: classifica silenciosamente
- `"error"`: para com erro

    res_wrb   <- classify_wrb2022(meu_pedon, on_missing = "silent")
    res_sibcs <- classify_sibcs(meu_pedon, include_familia = TRUE)
    res_usda  <- classify_usda(meu_pedon,  on_missing = "silent")

    res_wrb$name
    #> [1] "Chromic Ferralsol (Clayic, Ochric, Rubic)"
    res_sibcs$name
    #> [1] "Latossolos Vermelhos Distroficos tipicos, argilosa, moderado"
    res_usda$name
    #> [1] "Typic Hapludox"

## Atalho: classificar nos três sistemas em uma chamada

    todos <- classify_all(meu_pedon, on_missing = "silent")
    todos$summary
    #>                                         wrb
    #> 1 Chromic Ferralsol (Clayic, Ochric, Rubic)
    #>                                                          sibcs           usda
    #> 1 Latossolos Vermelhos Distroficos tipicos, argilosa, moderado Typic Hapludox

`classify_all()` retorna uma lista nomeada com `wrb`, `sibcs`, `usda` (cada uma um `ClassificationResult` completo) e um resumo `summary` em `data.frame` de uma linha — útil para tabular muitos pedons de uma vez só.

# 3. Inspecionando o key trace

O trace da chave é o histórico determinístico da decisão. Cada RSG / Ordem / Sistema testado aparece com o resultado de cada diagnóstico envolvido:

    res_wrb$trace
    #> $HS
    #> $HS$code
    #> [1] "HS"
    #>
    #> $HS$name
    #> [1] "Histosols"
    #>
    #> $HS$passed
    #> [1] FALSE
    #>
    #> $HS$evidence
    #> $HS$evidence[[1]]
    #> $HS$evidence[[1]]$test_name
    #> [1] "histic_horizon"
    #>
    #> $HS$evidence[[1]]$passed
    #> [1] FALSE
    #>
    #> $HS$evidence[[1]]$layers
    #> integer(0)
    #>
    #> $HS$evidence[[1]]$missing
    #> character(0)
    #>
    #> $HS$evidence[[1]]$evidence
    #> $HS$evidence[[1]]$evidence$contiguous
    #> $HS$evidence[[1]]$evidence$contiguous$organic_carbon
    #> $HS$evidence[[1]]$evidence$contiguous$organic_carbon$passed
    #> [1] FALSE
    #>
    #> $HS$evidence[[1]]$evidence$contiguous$organic_carbon$layers
    #> integer(0)
    #>
    #> $HS$evidence[[1]]$evidence$contiguous$organic_carbon$missing
    #> character(0)
    #>
    #> $HS$evidence[[1]]$evidence$contiguous$organic_carbon$details
    #> $HS$evidence[[1]]$evidence$contiguous$organic_carbon$details$`1`
    #> $HS$evidence[[1]]$evidence$contiguous$organic_carbon$details$`1`$idx
    #> [1] 1
    #>
    #> $HS$evidence[[1]]$evidence$contiguous$organic_carbon$details$`1`$oc_pct
    #> [1] 2
    #>
    #> $HS$evidence[[1]]$evidence$contiguous$organic_carbon$details$`1`$threshold
    #> [1] 12
    #>
    #> $HS$evidence[[1]]$evidence$contiguous$organic_carbon$details$`1`$passed
    #> [1] FALSE
    #>
    #>
    #> $HS$evidence[[1]]$evidence$contiguous$organic_carbon$details$`2`
    #> $HS$evidence[[1]]$evidence$contiguous$organic_carbon$details$`2`$idx
    #> [1] 2
    #>
    #> $HS$evidence[[1]]$evidence$contiguous$organic_carbon$details$`2`$oc_pct
    #> [1] 0.6
    #>
    #> $HS$evidence[[1]]$evidence$contiguous$organic_carbon$details$`2`$threshold
    #> [1] 12
    #>
    #> $HS$evidence[[1]]$evidence$contiguous$organic_carbon$details$`2`$passed
    #> [1] FALSE
    #>
    #>
    #> $HS$evidence[[1]]$evidence$contiguous$organic_carbon$details$`3`
    #> $HS$evidence[[1]]$evidence$contiguous$organic_carbon$details$`3`$idx
    #> [1] 3
    #>
    #> $HS$evidence[[1]]$evidence$contiguous$organic_carbon$details$`3`$oc_pct
    #> [1] 0.3
    #>
    #> $HS$evidence[[1]]$evidence$contiguous$organic_carbon$details$`3`$threshold
    #> [1] 12
    #>
    #> $HS$evidence[[1]]$evidence$contiguous$organic_carbon$details$`3`$passed
    #> [1] FALSE
    #>
    #>
    #> $HS$evidence[[1]]$evidence$contiguous$organic_carbon$details$`4`
    #> $HS$evidence[[1]]$evidence$contiguous$organic_carbon$details$`4`$idx
    #> [1] 4
    #>
    #> $HS$evidence[[1]]$evidence$contiguous$organic_carbon$details$`4`$oc_pct
    #> [1] 0.2
    #>
    #> $HS$evidence[[1]]$evidence$contiguous$organic_carbon$details$`4`$threshold
    #> [1] 12
    #>
    #> $HS$evidence[[1]]$evidence$contiguous$organic_carbon$details$`4`$passed
    #> [1] FALSE
    #>
    #>
    #>
    #> $HS$evidence[[1]]$evidence$contiguous$organic_carbon$notes
    #> [1] NA
    #>
    #>
    #> $HS$evidence[[1]]$evidence$contiguous$at_surface
    #> $HS$evidence[[1]]$evidence$contiguous$at_surface$passed
    #> [1] FALSE
    #>
    #> $HS$evidence[[1]]$evidence$contiguous$at_surface$layers
    #> integer(0)
    #>
    #> $HS$evidence[[1]]$evidence$contiguous$at_surface$missing
    #> character(0)
    #>
    #> $HS$evidence[[1]]$evidence$contiguous$at_surface$details
    #> list()
    #>
    #> $HS$evidence[[1]]$evidence$contiguous$at_surface$notes
    #> [1] NA
    #>
    #>
    #> $HS$evidence[[1]]$evidence$contiguous$thickness
    #> $HS$evidence[[1]]$evidence$contiguous$thickness$passed
    #> [1] FALSE
    #>
    #> $HS$evidence[[1]]$evidence$contiguous$thickness$layers
    #> integer(0)
    #>
    #> $HS$evidence[[1]]$evidence$contiguous$thickness$missing
    #> character(0)
    #>
    #> $HS$evidence[[1]]$evidence$contiguous$thickness$details
    #> NULL
    #>
    #> $HS$evidence[[1]]$evidence$contiguous$thickness$notes
    #> [1] NA
    #>
    #>
    #>
    #> $HS$evidence[[1]]$evidence$cumulative
    #> $HS$evidence[[1]]$evidence$cumulative$cumulative_oc
    #> $HS$evidence[[1]]$evidence$cumulative$cumulative_oc$passed
    #> [1] FALSE
    #>
    #> $HS$evidence[[1]]$evidence$cumulative$cumulative_oc$layers
    #> integer(0)
    #>
    #> $HS$evidence[[1]]$evidence$cumulative$cumulative_oc$missing
    #> character(0)
    #>
    #> $HS$evidence[[1]]$evidence$cumulative$cumulative_oc$details
    #> $HS$evidence[[1]]$evidence$cumulative$cumulative_oc$details$cumulative_thickness_cm
    #> [1] 0
    #>
    #> $HS$evidence[[1]]$evidence$cumulative$cumulative_oc$details$min_thickness_cm
    #> [1] 40
    #>
    #> $HS$evidence[[1]]$evidence$cumulative$cumulative_oc$details$max_depth_cm
    #> [1] 80
    #>
    #>
    #> $HS$evidence[[1]]$evidence$cumulative$cumulative_oc$notes
    #> [1] NA
    #>
    #>
    #>
    #>
    #> $HS$evidence[[1]]$reference
    #> [1] "IUSS Working Group WRB (2022), Chapter 3, Histic horizon"
    #>
    #> $HS$evidence[[1]]$notes
    #> [1] NA
    #>
    #>
    #>
    #> $HS$missing
    #> character(0)
    #>
    #> $HS$notes
    #> NULL
    #>
    #>
    #> $AT
    #> $AT$code
    #> [1] "AT"
    #>
    #> $AT$name
    #> [1] "Anthrosols"
    #>
    #> $AT$passed
    #> [1] FALSE
    #>
    #> $AT$evidence
    #> $AT$evidence[[1]]
    #> $AT$evidence[[1]]$test_name
    #> [1] "anthric_horizons"
    #>
    #> $AT$evidence[[1]]$passed
    #> [1] FALSE
    #>
    #> $AT$evidence[[1]]$layers
    #> integer(0)
    #>
    #> $AT$evidence[[1]]$missing
    #> character(0)
    #>
    #> $AT$evidence[[1]]$evidence
    #> $AT$evidence[[1]]$evidence$designation
    #> $AT$evidence[[1]]$evidence$designation$anthric_designation
    #> $AT$evidence[[1]]$evidence$designation$anthric_designation$passed
    #> [1] FALSE
    #>
    #> $AT$evidence[[1]]$evidence$designation$anthric_designation$layers
    #> integer(0)
    #>
    #> $AT$evidence[[1]]$evidence$designation$anthric_designation$missing
    #> character(0)
    #>
    #> $AT$evidence[[1]]$evidence$designation$anthric_designation$details
    #> $AT$evidence[[1]]$evidence$designation$anthric_designation$details$`1`
    #> $AT$evidence[[1]]$evidence$designation$anthric_designation$details$`1`$idx
    #> [1] 1
    #>
    #> $AT$evidence[[1]]$evidence$designation$anthric_designation$details$`1`$designation
    #> [1] "A"
    #>
    #> $AT$evidence[[1]]$evidence$designation$anthric_designation$details$`1`$pattern
    #> [1] "hortic|irragric|plaggic|pretic|terric"
    #>
    #> $AT$evidence[[1]]$evidence$designation$anthric_designation$details$`1`$passed
    #> [1] FALSE
    #>
    #>
    #> $AT$evidence[[1]]$evidence$designation$anthric_designation$details$`2`
    #> $AT$evidence[[1]]$evidence$designation$anthric_designation$details$`2`$idx
    #> [1] 2
    #>
    #> $AT$evidence[[1]]$evidence$designation$anthric_designation$details$`2`$designation
    #> [1] "AB"
    #>
    #> $AT$evidence[[1]]$evidence$designation$anthric_designation$details$`2`$pattern
    #> [1] "hortic|irragric|plaggic|pretic|terric"
    #>
    #> $AT$evidence[[1]]$evidence$designation$anthric_designation$details$`2`$passed
    #> [1] FALSE
    #>
    #>
    #> $AT$evidence[[1]]$evidence$designation$anthric_designation$details$`3`
    #> $AT$evidence[[1]]$evidence$designation$anthric_designation$details$`3`$idx
    #> [1] 3
    #>
    #> $AT$evidence[[1]]$evidence$designation$anthric_designation$details$`3`$designation
    #> [1] "Bw1"
    #>
    #> $AT$evidence[[1]]$evidence$designation$anthric_designation$details$`3`$pattern
    #> [1] "hortic|irragric|plaggic|pretic|terric"
    #>
    #> $AT$evidence[[1]]$evidence$designation$anthric_designation$details$`3`$passed
    #> [1] FALSE
    #>
    #>
    #> $AT$evidence[[1]]$evidence$designation$anthric_designation$details$`4`
    #> $AT$evidence[[1]]$evidence$designation$anthric_designation$details$`4`$idx
    #> [1] 4
    #>
    #> $AT$evidence[[1]]$evidence$designation$anthric_designation$details$`4`$designation
    #> [1] "Bw2"
    #>
    #> $AT$evidence[[1]]$evidence$designation$anthric_designation$details$`4`$pattern
    #> [1] "hortic|irragric|plaggic|pretic|terric"
    #>
    #> $AT$evidence[[1]]$evidence$designation$anthric_designation$details$`4`$passed
    #> [1] FALSE
    #>
    #>
    #>
    #> $AT$evidence[[1]]$evidence$designation$anthric_designation$notes
    #> [1] NA
    #>
    #>
    #>
    #> $AT$evidence[[1]]$evidence$property_based
    #> $AT$evidence[[1]]$evidence$property_based$anthric_props
    #> $AT$evidence[[1]]$evidence$property_based$anthric_props$passed
    #> [1] FALSE
    #>
    #> $AT$evidence[[1]]$evidence$property_based$anthric_props$layers
    #> integer(0)
    #>
    #> $AT$evidence[[1]]$evidence$property_based$anthric_props$missing
    #> character(0)
    #>
    #> $AT$evidence[[1]]$evidence$property_based$anthric_props$details
    #> NULL
    #>
    #> $AT$evidence[[1]]$evidence$property_based$anthric_props$notes
    #> [1] NA
    #>
    #>
    #>
    #>
    #> $AT$evidence[[1]]$reference
    #> [1] "IUSS Working Group WRB (2022), Chapter 5, Anthrosols"
    #>
    #> $AT$evidence[[1]]$notes
    #> [1] NA
    #>
    #>
    #>
    #> $AT$missing
    #> character(0)
    #>
    #> $AT$notes
    #> NULL
    #>
    #>
    #> $TC
    #> $TC$code
    #> [1] "TC"
    #>
    #> $TC$name
    #> [1] "Technosols"
    #>
    #> $TC$passed
    #> [1] NA
    #>
    #> $TC$evidence
    #> $TC$evidence[[1]]
    #> $TC$evidence[[1]]$test_name
    #> [1] "technic_features"
    #>
    #> $TC$evidence[[1]]$passed
    #> [1] NA
    #>
    #> $TC$evidence[[1]]$layers
    #> integer(0)
    #>
    #> $TC$evidence[[1]]$missing
    #> [1] "artefacts_pct"            "geomembrane_present"
    #> [3] "technic_hardmaterial_pct"
    #>
    #> $TC$evidence[[1]]$evidence
    #> $TC$evidence[[1]]$evidence$artefacts
    #> $TC$evidence[[1]]$evidence$artefacts$artefacts
    #> $TC$evidence[[1]]$evidence$artefacts$artefacts$passed
    #> [1] NA
    #>
    #> $TC$evidence[[1]]$evidence$artefacts$artefacts$layers
    #> integer(0)
    #>
    #> $TC$evidence[[1]]$evidence$artefacts$artefacts$missing
    #> [1] "artefacts_pct"
    #>
    #> $TC$evidence[[1]]$evidence$artefacts$artefacts$details
    #> list()
    #>
    #> $TC$evidence[[1]]$evidence$artefacts$artefacts$notes
    #> [1] NA
    #>
    #>
    #>
    #> $TC$evidence[[1]]$evidence$geomembrane
    #> $TC$evidence[[1]]$evidence$geomembrane$geomembrane
    #> $TC$evidence[[1]]$evidence$geomembrane$geomembrane$passed
    #> [1] NA
    #>
    #> $TC$evidence[[1]]$evidence$geomembrane$geomembrane$layers
    #> integer(0)
    #>
    #> $TC$evidence[[1]]$evidence$geomembrane$geomembrane$missing
    #> [1] "geomembrane_present"
    #>
    #> $TC$evidence[[1]]$evidence$geomembrane$geomembrane$details
    #> NULL
    #>
    #> $TC$evidence[[1]]$evidence$geomembrane$geomembrane$notes
    #> [1] NA
    #>
    #>
    #>
    #> $TC$evidence[[1]]$evidence$hardmaterial
    #> $TC$evidence[[1]]$evidence$hardmaterial$hardmaterial
    #> $TC$evidence[[1]]$evidence$hardmaterial$hardmaterial$passed
    #> [1] NA
    #>
    #> $TC$evidence[[1]]$evidence$hardmaterial$hardmaterial$layers
    #> integer(0)
    #>
    #> $TC$evidence[[1]]$evidence$hardmaterial$hardmaterial$missing
    #> [1] "technic_hardmaterial_pct"
    #>
    #> $TC$evidence[[1]]$evidence$hardmaterial$hardmaterial$details
    #> NULL
    #>
    #> $TC$evidence[[1]]$evidence$hardmaterial$hardmaterial$notes
    #> [1] NA
    #>
    #>
    #>
    #>
    #> $TC$evidence[[1]]$reference
    #> [1] "IUSS Working Group WRB (2022), Chapter 5, Technosols"
    #>
    #> $TC$evidence[[1]]$notes
    #> [1] NA
    #>
    #>
    #>
    #> $TC$missing
    #> [1] "artefacts_pct"            "geomembrane_present"
    #> [3] "technic_hardmaterial_pct"
    #>
    #> $TC$notes
    #> NULL
    #>
    #>
    #> $CR
    #> $CR$code
    #> [1] "CR"
    #>
    #> $CR$name
    #> [1] "Cryosols"
    #>
    #> $CR$passed
    #> [1] NA
    #>
    #> $CR$evidence
    #> $CR$evidence[[1]]
    #> $CR$evidence[[1]]$test_name
    #> [1] "cryic_conditions"
    #>
    #> $CR$evidence[[1]]$passed
    #> [1] NA
    #>
    #> $CR$evidence[[1]]$layers
    #> integer(0)
    #>
    #> $CR$evidence[[1]]$missing
    #> [1] "permafrost_temp_C"
    #>
    #> $CR$evidence[[1]]$evidence
    #> $CR$evidence[[1]]$evidence$permafrost_temp
    #> $CR$evidence[[1]]$evidence$permafrost_temp$permafrost
    #> $CR$evidence[[1]]$evidence$permafrost_temp$permafrost$passed
    #> [1] NA
    #>
    #> $CR$evidence[[1]]$evidence$permafrost_temp$permafrost$layers
    #> integer(0)
    #>
    #> $CR$evidence[[1]]$evidence$permafrost_temp$permafrost$missing
    #> [1] "permafrost_temp_C"
    #>
    #> $CR$evidence[[1]]$evidence$permafrost_temp$permafrost$details
    #> NULL
    #>
    #> $CR$evidence[[1]]$evidence$permafrost_temp$permafrost$notes
    #> [1] NA
    #>
    #>
    #>
    #> $CR$evidence[[1]]$evidence$designation
    #> $CR$evidence[[1]]$evidence$designation$frozen_designation
    #> $CR$evidence[[1]]$evidence$designation$frozen_designation$passed
    #> [1] FALSE
    #>
    #> $CR$evidence[[1]]$evidence$designation$frozen_designation$layers
    #> integer(0)
    #>
    #> $CR$evidence[[1]]$evidence$designation$frozen_designation$missing
    #> character(0)
    #>
    #> $CR$evidence[[1]]$evidence$designation$frozen_designation$details
    #> $CR$evidence[[1]]$evidence$designation$frozen_designation$details$`1`
    #> $CR$evidence[[1]]$evidence$designation$frozen_designation$details$`1`$idx
    #> [1] 1
    #>
    #> $CR$evidence[[1]]$evidence$designation$frozen_designation$details$`1`$designation
    #> [1] "A"
    #>
    #> $CR$evidence[[1]]$evidence$designation$frozen_designation$details$`1`$pattern
    #> [1] "^[A-Z][a-z]*f($|[0-9])|^Cf|perma"
    #>
    #> $CR$evidence[[1]]$evidence$designation$frozen_designation$details$`1`$passed
    #> [1] FALSE
    #>
    #>
    #> $CR$evidence[[1]]$evidence$designation$frozen_designation$details$`2`
    #> $CR$evidence[[1]]$evidence$designation$frozen_designation$details$`2`$idx
    #> [1] 2
    #>
    #> $CR$evidence[[1]]$evidence$designation$frozen_designation$details$`2`$designation
    #> [1] "AB"
    #>
    #> $CR$evidence[[1]]$evidence$designation$frozen_designation$details$`2`$pattern
    #> [1] "^[A-Z][a-z]*f($|[0-9])|^Cf|perma"
    #>
    #> $CR$evidence[[1]]$evidence$designation$frozen_designation$details$`2`$passed
    #> [1] FALSE
    #>
    #>
    #> $CR$evidence[[1]]$evidence$designation$frozen_designation$details$`3`
    #> $CR$evidence[[1]]$evidence$designation$frozen_designation$details$`3`$idx
    #> [1] 3
    #>
    #> $CR$evidence[[1]]$evidence$designation$frozen_designation$details$`3`$designation
    #> [1] "Bw1"
    #>
    #> $CR$evidence[[1]]$evidence$designation$frozen_designation$details$`3`$pattern
    #> [1] "^[A-Z][a-z]*f($|[0-9])|^Cf|perma"
    #>
    #> $CR$evidence[[1]]$evidence$designation$frozen_designation$details$`3`$passed
    #> [1] FALSE
    #>
    #>
    #> $CR$evidence[[1]]$evidence$designation$frozen_designation$details$`4`
    #> $CR$evidence[[1]]$evidence$designation$frozen_designation$details$`4`$idx
    #> [1] 4
    #>
    #> $CR$evidence[[1]]$evidence$designation$frozen_designation$details$`4`$designation
    #> [1] "Bw2"
    #>
    #> $CR$evidence[[1]]$evidence$designation$frozen_designation$details$`4`$pattern
    #> [1] "^[A-Z][a-z]*f($|[0-9])|^Cf|perma"
    #>
    #> $CR$evidence[[1]]$evidence$designation$frozen_designation$details$`4`$passed
    #> [1] FALSE
    #>
    #>
    #>
    #> $CR$evidence[[1]]$evidence$designation$frozen_designation$notes
    #> [1] NA
    #>
    #>
    #> $CR$evidence[[1]]$evidence$designation$within_depth
    #> $CR$evidence[[1]]$evidence$designation$within_depth$passed
    #> [1] FALSE
    #>
    #> $CR$evidence[[1]]$evidence$designation$within_depth$layers
    #> integer(0)
    #>
    #> $CR$evidence[[1]]$evidence$designation$within_depth$missing
    #> character(0)
    #>
    #> $CR$evidence[[1]]$evidence$designation$within_depth$details
    #> list()
    #>
    #> $CR$evidence[[1]]$evidence$designation$within_depth$notes
    #> [1] NA
    #>
    #>
    #>
    #>
    #> $CR$evidence[[1]]$reference
    #> [1] "IUSS Working Group WRB (2022), Chapter 5, Cryosols"
    #>
    #> $CR$evidence[[1]]$notes
    #> [1] NA
    #>
    #>
    #>
    #> $CR$missing
    #> [1] "permafrost_temp_C"
    #>
    #> $CR$notes
    #> NULL
    #>
    #>
    #> $LP
    #> $LP$code
    #> [1] "LP"
    #>
    #> $LP$name
    #> [1] "Leptosols"
    #>
    #> $LP$passed
    #> [1] NA
    #>
    #> $LP$evidence
    #> $LP$evidence[[1]]
    #> $LP$evidence[[1]]$test_name
    #> [1] "leptic_features"
    #>
    #> $LP$evidence[[1]]$passed
    #> [1] NA
    #>
    #> $LP$evidence[[1]]$layers
    #> integer(0)
    #>
    #> $LP$evidence[[1]]$missing
    #> [1] "coarse_fragments_pct"
    #>
    #> $LP$evidence[[1]]$evidence
    #> $LP$evidence[[1]]$evidence$designation
    #> $LP$evidence[[1]]$evidence$designation$rock_designation
    #> $LP$evidence[[1]]$evidence$designation$rock_designation$passed
    #> [1] FALSE
    #>
    #> $LP$evidence[[1]]$evidence$designation$rock_designation$layers
    #> integer(0)
    #>
    #> $LP$evidence[[1]]$evidence$designation$rock_designation$missing
    #> character(0)
    #>
    #> $LP$evidence[[1]]$evidence$designation$rock_designation$details
    #> $LP$evidence[[1]]$evidence$designation$rock_designation$details$`1`
    #> $LP$evidence[[1]]$evidence$designation$rock_designation$details$`1`$idx
    #> [1] 1
    #>
    #> $LP$evidence[[1]]$evidence$designation$rock_designation$details$`1`$designation
    #> [1] "A"
    #>
    #> $LP$evidence[[1]]$evidence$designation$rock_designation$details$`1`$pattern
    #> [1] "^R$|^Cr|^R[a-z]"
    #>
    #> $LP$evidence[[1]]$evidence$designation$rock_designation$details$`1`$passed
    #> [1] FALSE
    #>
    #>
    #> $LP$evidence[[1]]$evidence$designation$rock_designation$details$`2`
    #> $LP$evidence[[1]]$evidence$designation$rock_designation$details$`2`$idx
    #> [1] 2
    #>
    #> $LP$evidence[[1]]$evidence$designation$rock_designation$details$`2`$designation
    #> [1] "AB"
    #>
    #> $LP$evidence[[1]]$evidence$designation$rock_designation$details$`2`$pattern
    #> [1] "^R$|^Cr|^R[a-z]"
    #>
    #> $LP$evidence[[1]]$evidence$designation$rock_designation$details$`2`$passed
    #> [1] FALSE
    #>
    #>
    #> $LP$evidence[[1]]$evidence$designation$rock_designation$details$`3`
    #> $LP$evidence[[1]]$evidence$designation$rock_designation$details$`3`$idx
    #> [1] 3
    #>
    #> $LP$evidence[[1]]$evidence$designation$rock_designation$details$`3`$designation
    #> [1] "Bw1"
    #>
    #> $LP$evidence[[1]]$evidence$designation$rock_designation$details$`3`$pattern
    #> [1] "^R$|^Cr|^R[a-z]"
    #>
    #> $LP$evidence[[1]]$evidence$designation$rock_designation$details$`3`$passed
    #> [1] FALSE
    #>
    #>
    #> $LP$evidence[[1]]$evidence$designation$rock_designation$details$`4`
    #> $LP$evidence[[1]]$evidence$designation$rock_designation$details$`4`$idx
    #> [1] 4
    #>
    #> $LP$evidence[[1]]$evidence$designation$rock_designation$details$`4`$designation
    #> [1] "Bw2"
    #>
    #> $LP$evidence[[1]]$evidence$designation$rock_designation$details$`4`$pattern
    #> [1] "^R$|^Cr|^R[a-z]"
    #>
    #> $LP$evidence[[1]]$evidence$designation$rock_designation$details$`4`$passed
    #> [1] FALSE
    #>
    #>
    #>
    #> $LP$evidence[[1]]$evidence$designation$rock_designation$notes
    #> [1] NA
    #>
    #>
    #> $LP$evidence[[1]]$evidence$designation$shallow
    #> $LP$evidence[[1]]$evidence$designation$shallow$passed
    #> [1] FALSE
    #>
    #> $LP$evidence[[1]]$evidence$designation$shallow$layers
    #> integer(0)
    #>
    #> $LP$evidence[[1]]$evidence$designation$shallow$missing
    #> character(0)
    #>
    #> $LP$evidence[[1]]$evidence$designation$shallow$details
    #> list()
    #>
    #> $LP$evidence[[1]]$evidence$designation$shallow$notes
    #> [1] NA
    #>
    #>
    #>
    #> $LP$evidence[[1]]$evidence$coarse_fragments
    #> $LP$evidence[[1]]$evidence$coarse_fragments$coarse_at_surface
    #> $LP$evidence[[1]]$evidence$coarse_fragments$coarse_at_surface$passed
    #> [1] NA
    #>
    #> $LP$evidence[[1]]$evidence$coarse_fragments$coarse_at_surface$layers
    #> integer(0)
    #>
    #> $LP$evidence[[1]]$evidence$coarse_fragments$coarse_at_surface$missing
    #> [1] "coarse_fragments_pct"
    #>
    #> $LP$evidence[[1]]$evidence$coarse_fragments$coarse_at_surface$details
    #> NULL
    #>
    #> $LP$evidence[[1]]$evidence$coarse_fragments$coarse_at_surface$notes
    #> [1] NA
    #>
    #>
    #>
    #> $LP$evidence[[1]]$evidence$engine
    #> [1] "soilkey"
    #>
    #>
    #> $LP$evidence[[1]]$reference
    #> [1] "IUSS Working Group WRB (2022), Chapter 5, Leptosols "
    #>
    #> $LP$evidence[[1]]$notes
    #> [1] NA
    #>
    #>
    #>
    #> $LP$missing
    #> [1] "coarse_fragments_pct"
    #>
    #> $LP$notes
    #> NULL
    #>
    #>
    #> $SN
    #> $SN$code
    #> [1] "SN"
    #>
    #> $SN$name
    #> [1] "Solonetz"
    #>
    #> $SN$passed
    #> [1] FALSE
    #>
    #> $SN$evidence
    #> $SN$evidence[[1]]
    #> $SN$evidence[[1]]$test_name
    #> [1] "natric_horizon"
    #>
    #> $SN$evidence[[1]]$passed
    #> [1] FALSE
    #>
    #> $SN$evidence[[1]]$layers
    #> integer(0)
    #>
    #> $SN$evidence[[1]]$missing
    #> character(0)
    #>
    #> $SN$evidence[[1]]$evidence
    #> $SN$evidence[[1]]$evidence$argic
    #>
    #> ── DiagnosticResult: argic
    #> Status: failed
    #> Sub-tests:
    #> [fail] clay_increase
    #> [fail] thickness
    #> [fail] texture
    #> [PASS] not_albeluvic
    #> Reference: IUSS Working Group WRB (2022), Chapter 3, Argic horizon
    #> Notes: No layer satisfied the clay-increase precondition
    #>
    #>
    #> $SN$evidence[[1]]$reference
    #> [1] "IUSS Working Group WRB (2022), Chapter 3, Natric horizon"
    #>
    #> $SN$evidence[[1]]$notes
    #> [1] "Profile lacks an argic horizon -- natric inapplicable"
    #>
    #>
    #>
    #> $SN$missing
    #> character(0)
    #>
    #> $SN$notes
    #> NULL
    #>
    #>
    #> $VR
    #> $VR$code
    #> [1] "VR"
    #>
    #> $VR$name
    #> [1] "Vertisols"
    #>
    #> $VR$passed
    #> [1] NA
    #>
    #> $VR$evidence
    #> $VR$evidence[[1]]
    #> $VR$evidence[[1]]$test_name
    #> [1] "vertisol"
    #>
    #> $VR$evidence[[1]]$passed
    #> [1] NA
    #>
    #> $VR$evidence[[1]]$layers
    #> integer(0)
    #>
    #> $VR$evidence[[1]]$missing
    #> [1] "slickensides"
    #>
    #> $VR$evidence[[1]]$evidence
    #> $VR$evidence[[1]]$evidence$vertic_horizon
    #>
    #> ── DiagnosticResult: vertic_horizon
    #> Status: NA (insufficient data)
    #> Missing attributes (1): slickensides
    #> Sub-tests:
    #> [PASS] clay
    #> [ NA ] slickensides
    #> [fail] cracks
    #> [fail] thickness
    #> [ NA ] cole_le_path
    #> [ NA ] designation_inference
    #> [ NA ] chroma_clay_inference
    #> Reference: IUSS Working Group WRB (2022), Chapter 3.1, Vertic horizon; KST 13ed
    #> Ch 16 LE alternative
    #>
    #>
    #> $VR$evidence[[1]]$reference
    #> [1] "IUSS Working Group WRB (2022), Chapter 4, Vertisols (p. 101)"
    #>
    #> $VR$evidence[[1]]$notes
    #> [1] "Failed/NA because vertic_horizon test did not pass"
    #>
    #>
    #>
    #> $VR$missing
    #> [1] "slickensides"
    #>
    #> $VR$notes
    #> NULL
    #>
    #>
    #> $SC
    #> $SC$code
    #> [1] "SC"
    #>
    #> $SC$name
    #> [1] "Solonchaks"
    #>
    #> $SC$passed
    #> [1] NA
    #>
    #> $SC$evidence
    #> $SC$evidence[[1]]
    #> $SC$evidence[[1]]$test_name
    #> [1] "salic"
    #>
    #> $SC$evidence[[1]]$passed
    #> [1] NA
    #>
    #> $SC$evidence[[1]]$layers
    #> integer(0)
    #>
    #> $SC$evidence[[1]]$missing
    #> [1] "ec_dS_m"
    #>
    #> $SC$evidence[[1]]$evidence
    #> $SC$evidence[[1]]$evidence$ec
    #> $SC$evidence[[1]]$evidence$ec$passed
    #> [1] NA
    #>
    #> $SC$evidence[[1]]$evidence$ec$layers
    #> integer(0)
    #>
    #> $SC$evidence[[1]]$evidence$ec$missing
    #> [1] "ec_dS_m"
    #>
    #> $SC$evidence[[1]]$evidence$ec$details
    #> list()
    #>
    #> $SC$evidence[[1]]$evidence$ec$notes
    #> [1] NA
    #>
    #>
    #> $SC$evidence[[1]]$evidence$thickness
    #> $SC$evidence[[1]]$evidence$thickness$passed
    #> [1] FALSE
    #>
    #> $SC$evidence[[1]]$evidence$thickness$layers
    #> integer(0)
    #>
    #> $SC$evidence[[1]]$evidence$thickness$missing
    #> character(0)
    #>
    #> $SC$evidence[[1]]$evidence$thickness$details
    #> NULL
    #>
    #> $SC$evidence[[1]]$evidence$thickness$notes
    #> [1] NA
    #>
    #>
    #> $SC$evidence[[1]]$evidence$product
    #> $SC$evidence[[1]]$evidence$product$passed
    #> [1] FALSE
    #>
    #> $SC$evidence[[1]]$evidence$product$layers
    #> integer(0)
    #>
    #> $SC$evidence[[1]]$evidence$product$missing
    #> character(0)
    #>
    #> $SC$evidence[[1]]$evidence$product$details
    #> list()
    #>
    #> $SC$evidence[[1]]$evidence$product$notes
    #> [1] NA
    #>
    #>
    #>
    #> $SC$evidence[[1]]$reference
    #> [1] "IUSS Working Group WRB (2022), Chapter 3.1.20, Salic horizon (p. 49)"
    #>
    #> $SC$evidence[[1]]$notes
    #> [1] NA
    #>
    #>
    #>
    #> $SC$missing
    #> [1] "ec_dS_m"
    #>
    #> $SC$notes
    #> NULL
    #>
    #>
    #> $GL
    #> $GL$code
    #> [1] "GL"
    #>
    #> $GL$name
    #> [1] "Gleysols"
    #>
    #> $GL$passed
    #> [1] FALSE
    #>
    #> $GL$evidence
    #> $GL$evidence[[1]]
    #> $GL$evidence[[1]]$test_name
    #> [1] "gleysol"
    #>
    #> $GL$evidence[[1]]$passed
    #> [1] FALSE
    #>
    #> $GL$evidence[[1]]$layers
    #> integer(0)
    #>
    #> $GL$evidence[[1]]$missing
    #> [1] "redoximorphic_features_pct"
    #>
    #> $GL$evidence[[1]]$evidence
    #> $GL$evidence[[1]]$evidence$gleyic_properties
    #>
    #> ── DiagnosticResult: gleyic_properties
    #> Status: NA (insufficient data)
    #> Missing attributes (1): redoximorphic_features_pct
    #> Sub-tests:
    #> [fail] gleyic_features
    #> [ NA ] stagnic_pattern
    #> [ NA ] designation_inference
    #> Reference: IUSS Working Group WRB (2022), Chapter 3, Gleyic properties
    #>
    #> $GL$evidence[[1]]$evidence$reducing_conditions
    #>
    #> ── DiagnosticResult: reducing_conditions
    #> Status: failed
    #> Sub-tests:
    #> [fail] redox
    #> Reference: IUSS Working Group WRB (2022), Chapter 3.2.10
    #>
    #> $GL$evidence[[1]]$evidence$path1_layers
    #> integer(0)
    #>
    #> $GL$evidence[[1]]$evidence$path1_ok
    #> [1] FALSE
    #>
    #> $GL$evidence[[1]]$evidence$path3_ok
    #> [1] FALSE
    #>
    #> $GL$evidence[[1]]$evidence$strict_mode
    #> [1] FALSE
    #>
    #>
    #> $GL$evidence[[1]]$reference
    #> [1] "IUSS Working Group WRB (2022), Chapter 4, Gleysols (p. 103)"
    #>
    #> $GL$evidence[[1]]$notes
    #> [1] NA
    #>
    #>
    #>
    #> $GL$missing
    #> [1] "redoximorphic_features_pct"
    #>
    #> $GL$notes
    #> NULL
    #>
    #>
    #> $AN
    #> $AN$code
    #> [1] "AN"
    #>
    #> $AN$name
    #> [1] "Andosols"
    #>
    #> $AN$passed
    #> [1] FALSE
    #>
    #> $AN$evidence
    #> $AN$evidence[[1]]
    #> $AN$evidence[[1]]$test_name
    #> [1] "andosol"
    #>
    #> $AN$evidence[[1]]$passed
    #> [1] FALSE
    #>
    #> $AN$evidence[[1]]$layers
    #> integer(0)
    #>
    #> $AN$evidence[[1]]$missing
    #> [1] "al_ox_pct"               "fe_ox_pct"
    #> [3] "phosphate_retention_pct" "volcanic_glass_pct"
    #>
    #> $AN$evidence[[1]]$evidence
    #> $AN$evidence[[1]]$evidence$andic
    #>
    #> ── DiagnosticResult: andic_properties
    #> Status: failed
    #> Missing attributes (3): al_ox_pct, fe_ox_pct, phosphate_retention_pct
    #> Sub-tests:
    #> [ NA ] oc_bd_proxy
    #> Reference: IUSS Working Group WRB (2022), Chapter 3, Andic properties
    #>
    #> $AN$evidence[[1]]$evidence$vitric
    #>
    #> ── DiagnosticResult: vitric_properties
    #> Status: NA (insufficient data)
    #> Missing attributes (1): volcanic_glass_pct
    #> Sub-tests:
    #> [ NA ] volcanic_glass
    #> [fail] alfe_ox
    #> [fail] phosphate_ret
    #> Reference: IUSS Working Group WRB (2022), Chapter 3.2.16
    #>
    #>
    #> $AN$evidence[[1]]$reference
    #> [1] "IUSS Working Group WRB (2022), Chapter 4, Andosols (p. 104)"
    #>
    #> $AN$evidence[[1]]$notes
    #> [1] "No andic or vitric layers"
    #>
    #>
    #>
    #> $AN$missing
    #> [1] "al_ox_pct"               "fe_ox_pct"
    #> [3] "phosphate_retention_pct" "volcanic_glass_pct"
    #>
    #> $AN$notes
    #> NULL
    #>
    #>
    #> $PZ
    #> $PZ$code
    #> [1] "PZ"
    #>
    #> $PZ$name
    #> [1] "Podzols"
    #>
    #> $PZ$passed
    #> [1] NA
    #>
    #> $PZ$evidence
    #> $PZ$evidence[[1]]
    #> $PZ$evidence[[1]]$test_name
    #> [1] "spodic"
    #>
    #> $PZ$evidence[[1]]$passed
    #> [1] NA
    #>
    #> $PZ$evidence[[1]]$layers
    #> integer(0)
    #>
    #> $PZ$evidence[[1]]$missing
    #> [1] "al_ox_pct" "fe_ox_pct"
    #>
    #> $PZ$evidence[[1]]$evidence
    #> $PZ$evidence[[1]]$evidence$alfe_oxalate
    #> $PZ$evidence[[1]]$evidence$alfe_oxalate$passed
    #> [1] NA
    #>
    #> $PZ$evidence[[1]]$evidence$alfe_oxalate$layers
    #> integer(0)
    #>
    #> $PZ$evidence[[1]]$evidence$alfe_oxalate$missing
    #> [1] "al_ox_pct" "fe_ox_pct"
    #>
    #> $PZ$evidence[[1]]$evidence$alfe_oxalate$details
    #> list()
    #>
    #> $PZ$evidence[[1]]$evidence$alfe_oxalate$notes
    #> [1] NA
    #>
    #>
    #> $PZ$evidence[[1]]$evidence$ph
    #> $PZ$evidence[[1]]$evidence$ph$passed
    #> [1] FALSE
    #>
    #> $PZ$evidence[[1]]$evidence$ph$layers
    #> integer(0)
    #>
    #> $PZ$evidence[[1]]$evidence$ph$missing
    #> character(0)
    #>
    #> $PZ$evidence[[1]]$evidence$ph$details
    #> list()
    #>
    #> $PZ$evidence[[1]]$evidence$ph$notes
    #> [1] NA
    #>
    #>
    #> $PZ$evidence[[1]]$evidence$illuvial_signature
    #> $PZ$evidence[[1]]$evidence$illuvial_signature$passed
    #> [1] FALSE
    #>
    #> $PZ$evidence[[1]]$evidence$illuvial_signature$layers
    #> integer(0)
    #>
    #> $PZ$evidence[[1]]$evidence$illuvial_signature$missing
    #> character(0)
    #>
    #> $PZ$evidence[[1]]$evidence$illuvial_signature$details
    #> $PZ$evidence[[1]]$evidence$illuvial_signature$details$designation_match
    #> integer(0)
    #>
    #> $PZ$evidence[[1]]$evidence$illuvial_signature$details$albic_above_match
    #> integer(0)
    #>
    #>
    #> $PZ$evidence[[1]]$evidence$illuvial_signature$notes
    #> [1] NA
    #>
    #>
    #> $PZ$evidence[[1]]$evidence$thickness
    #> $PZ$evidence[[1]]$evidence$thickness$passed
    #> [1] FALSE
    #>
    #> $PZ$evidence[[1]]$evidence$thickness$layers
    #> integer(0)
    #>
    #> $PZ$evidence[[1]]$evidence$thickness$missing
    #> character(0)
    #>
    #> $PZ$evidence[[1]]$evidence$thickness$details
    #> NULL
    #>
    #> $PZ$evidence[[1]]$evidence$thickness$notes
    #> [1] NA
    #>
    #>
    #>
    #> $PZ$evidence[[1]]$reference
    #> [1] "IUSS Working Group WRB (2022), Chapter 3, Spodic horizon"
    #>
    #> $PZ$evidence[[1]]$notes
    #> [1] "v0.9.19: + morphological inference path when Al/Fe oxalate missing"
    #>
    #>
    #>
    #> $PZ$missing
    #> [1] "al_ox_pct" "fe_ox_pct"
    #>
    #> $PZ$notes
    #> NULL
    #>
    #>
    #> $PT
    #> $PT$code
    #> [1] "PT"
    #>
    #> $PT$name
    #> [1] "Plinthosols"
    #>
    #> $PT$passed
    #> [1] NA
    #>
    #> $PT$evidence
    #> $PT$evidence[[1]]
    #> $PT$evidence[[1]]$test_name
    #> [1] "plinthic"
    #>
    #> $PT$evidence[[1]]$passed
    #> [1] NA
    #>
    #> $PT$evidence[[1]]$layers
    #> integer(0)
    #>
    #> $PT$evidence[[1]]$missing
    #> [1] "plinthite_pct"
    #>
    #> $PT$evidence[[1]]$evidence
    #> $PT$evidence[[1]]$evidence$plinthite
    #> $PT$evidence[[1]]$evidence$plinthite$passed
    #> [1] NA
    #>
    #> $PT$evidence[[1]]$evidence$plinthite$layers
    #> integer(0)
    #>
    #> $PT$evidence[[1]]$evidence$plinthite$missing
    #> [1] "plinthite_pct"
    #>
    #> $PT$evidence[[1]]$evidence$plinthite$details
    #> list()
    #>
    #> $PT$evidence[[1]]$evidence$plinthite$notes
    #> [1] NA
    #>
    #>
    #> $PT$evidence[[1]]$evidence$thickness
    #> $PT$evidence[[1]]$evidence$thickness$passed
    #> [1] FALSE
    #>
    #> $PT$evidence[[1]]$evidence$thickness$layers
    #> integer(0)
    #>
    #> $PT$evidence[[1]]$evidence$thickness$missing
    #> character(0)
    #>
    #> $PT$evidence[[1]]$evidence$thickness$details
    #> NULL
    #>
    #> $PT$evidence[[1]]$evidence$thickness$notes
    #> [1] NA
    #>
    #>
    #> $PT$evidence[[1]]$evidence$designation_inference
    #> $PT$evidence[[1]]$evidence$designation_inference$passed
    #> [1] NA
    #>
    #> $PT$evidence[[1]]$evidence$designation_inference$layers
    #> integer(0)
    #>
    #> $PT$evidence[[1]]$evidence$designation_inference$source
    #> [1] "off"
    #>
    #>
    #>
    #> $PT$evidence[[1]]$reference
    #> [1] "IUSS Working Group WRB (2022), Chapter 3, Plinthic horizon "
    #>
    #> $PT$evidence[[1]]$notes
    #> [1] NA
    #>
    #>
    #>
    #> $PT$missing
    #> [1] "plinthite_pct"
    #>
    #> $PT$notes
    #> NULL
    #>
    #>
    #> $PL
    #> $PL$code
    #> [1] "PL"
    #>
    #> $PL$name
    #> [1] "Planosols"
    #>
    #> $PL$passed
    #> [1] FALSE
    #>
    #> $PL$evidence
    #> $PL$evidence[[1]]
    #> $PL$evidence[[1]]$test_name
    #> [1] "planosol"
    #>
    #> $PL$evidence[[1]]$passed
    #> [1] FALSE
    #>
    #> $PL$evidence[[1]]$layers
    #> integer(0)
    #>
    #> $PL$evidence[[1]]$missing
    #> character(0)
    #>
    #> $PL$evidence[[1]]$evidence
    #> $PL$evidence[[1]]$evidence$abrupt_textural_difference
    #>
    #> ── DiagnosticResult: abrupt_textural_difference
    #> Status: failed
    #> Sub-tests:
    #> Reference: IUSS Working Group WRB (2022), Chapter 3.2.1
    #>
    #>
    #> $PL$evidence[[1]]$reference
    #> [1] "IUSS Working Group WRB (2022), Chapter 4, Planosols (p. 107)"
    #>
    #> $PL$evidence[[1]]$notes
    #> [1] "No abrupt textural difference within profile"
    #>
    #>
    #>
    #> $PL$missing
    #> character(0)
    #>
    #> $PL$notes
    #> NULL
    #>
    #>
    #> $ST
    #> $ST$code
    #> [1] "ST"
    #>
    #> $ST$name
    #> [1] "Stagnosols"
    #>
    #> $ST$passed
    #> [1] NA
    #>
    #> $ST$evidence
    #> $ST$evidence[[1]]
    #> $ST$evidence[[1]]$test_name
    #> [1] "stagnic_properties"
    #>
    #> $ST$evidence[[1]]$passed
    #> [1] NA
    #>
    #> $ST$evidence[[1]]$layers
    #> integer(0)
    #>
    #> $ST$evidence[[1]]$missing
    #> [1] "redoximorphic_features_pct"
    #>
    #> $ST$evidence[[1]]$evidence
    #> $ST$evidence[[1]]$evidence$stagnic_pattern
    #> $ST$evidence[[1]]$evidence$stagnic_pattern$passed
    #> [1] NA
    #>
    #> $ST$evidence[[1]]$evidence$stagnic_pattern$layers
    #> integer(0)
    #>
    #> $ST$evidence[[1]]$evidence$stagnic_pattern$missing
    #> [1] "redoximorphic_features_pct"
    #>
    #> $ST$evidence[[1]]$evidence$stagnic_pattern$details
    #> NULL
    #>
    #> $ST$evidence[[1]]$evidence$stagnic_pattern$notes
    #> [1] NA
    #>
    #>
    #>
    #> $ST$evidence[[1]]$reference
    #> [1] "IUSS Working Group WRB (2022), Chapter 3, Stagnic properties"
    #>
    #> $ST$evidence[[1]]$notes
    #> [1] NA
    #>
    #>
    #>
    #> $ST$missing
    #> [1] "redoximorphic_features_pct"
    #>
    #> $ST$notes
    #> NULL
    #>
    #>
    #> $NT
    #> $NT$code
    #> [1] "NT"
    #>
    #> $NT$name
    #> [1] "Nitisols"
    #>
    #> $NT$passed
    #> [1] FALSE
    #>
    #> $NT$evidence
    #> $NT$evidence[[1]]
    #> $NT$evidence[[1]]$test_name
    #> [1] "nitic_horizon"
    #>
    #> $NT$evidence[[1]]$passed
    #> [1] FALSE
    #>
    #> $NT$evidence[[1]]$layers
    #> integer(0)
    #>
    #> $NT$evidence[[1]]$missing
    #> character(0)
    #>
    #> $NT$evidence[[1]]$evidence
    #> $NT$evidence[[1]]$evidence$ferralic
    #>
    #> ── DiagnosticResult: ferralic
    #> Status: PASSED
    #> Layers satisfying: 2, 3, 4
    #> Sub-tests:
    #> [PASS] texture
    #> [PASS] cec_per_clay
    #> [PASS] thickness
    #> Reference: IUSS Working Group WRB (2022), Chapter 3.1.10, Ferralic horizon (p.
    #> 44)
    #> Notes: v0.3.1: ECEC/clay <= 12 test removed; not part of WRB 2022 ferralic.
    #> v0.9.67 engine=soilkey threshold = 16 cmol_c/kg clay.
    #>
    #>
    #> $NT$evidence[[1]]$reference
    #> [1] "IUSS Working Group WRB (2022), Chapter 3, Nitic horizon"
    #>
    #> $NT$evidence[[1]]$notes
    #> [1] "Excluded -- profile has a ferralic horizon (Ferralsol path)"
    #>
    #>
    #>
    #> $NT$missing
    #> character(0)
    #>
    #> $NT$notes
    #> NULL
    #>
    #>
    #> $FR
    #> $FR$code
    #> [1] "FR"
    #>
    #> $FR$name
    #> [1] "Ferralsols"
    #>
    #> $FR$passed
    #> [1] TRUE
    #>
    #> $FR$evidence
    #> $FR$evidence[[1]]
    #> $FR$evidence[[1]]$test_name
    #> [1] "ferralsol"
    #>
    #> $FR$evidence[[1]]$passed
    #> [1] TRUE
    #>
    #> $FR$evidence[[1]]$layers
    #> [1] 2 3 4
    #>
    #> $FR$evidence[[1]]$missing
    #> character(0)
    #>
    #> $FR$evidence[[1]]$evidence
    #> $FR$evidence[[1]]$evidence$ferralic
    #>
    #> ── DiagnosticResult: ferralic
    #> Status: PASSED
    #> Layers satisfying: 2, 3, 4
    #> Sub-tests:
    #> [PASS] texture
    #> [PASS] cec_per_clay
    #> [PASS] thickness
    #> Reference: IUSS Working Group WRB (2022), Chapter 3.1.10, Ferralic horizon (p.
    #> 44)
    #> Notes: v0.3.1: ECEC/clay <= 12 test removed; not part of WRB 2022 ferralic.
    #> v0.9.67 engine=soilkey threshold = 16 cmol_c/kg clay.
    #>
    #> $FR$evidence[[1]]$evidence$argic
    #>
    #> ── DiagnosticResult: argic
    #> Status: failed
    #> Sub-tests:
    #> [fail] clay_increase
    #> [fail] thickness
    #> [fail] texture
    #> [PASS] not_albeluvic
    #> Reference: IUSS Working Group WRB (2022), Chapter 3, Argic horizon
    #> Notes: No layer satisfied the clay-increase precondition
    #>
    #> $FR$evidence[[1]]$evidence$strict_mode
    #> [1] FALSE
    #>
    #>
    #> $FR$evidence[[1]]$reference
    #> [1] "IUSS Working Group WRB (2022), Chapter 4, Ferralsols (p. 110)"
    #>
    #> $FR$evidence[[1]]$notes
    #> [1] NA
    #>
    #>
    #>
    #> $FR$missing
    #> character(0)
    #>
    #> $FR$notes
    #> NULL

Isso é a feature distintiva do soilKey vs. um classificador “caixa-preta” baseado em LLM: cada classificação carrega o motivo. Se você discorda do resultado, o trace mostra exatamente em qual diagnóstico a chave se desviou da sua expectativa.

# 4. Provenance + evidence grade

Cada valor que entra na chave tem uma tag de proveniência:

    meu_pedon$add_measurement(
      horizon_idx = 4,
      attribute   = "clay_pct",
      value       = 60,
      source      = "predicted_spectra",
      confidence  = 0.85,
      notes       = "Vis-NIR PLSR-local, OSSL South-America library",
      overwrite   = TRUE
    )

O `evidence_grade` do `ClassificationResult` é a regra do “pior provenance entre os atributos que foram decisivos para a classificação”:

- A: tudo `measured` (laboratório)
- B: ao menos um `predicted_spectra` decisivo
- C: ao menos um `extracted_vlm` decisivo
- D: ao menos um `inferred_prior` ou `user_assumed` decisivo

Isso garante que um perfil classificado a partir de chemistry de laboratório recebe A, mas o mesmo perfil com um valor de argila chave preenchido por VLM ou predição espectral é honestamente B ou C, mesmo que o nome final seja idêntico.

# 5. Cross-system: o mesmo perfil em três taxonomias

    todos <- classify_all(meu_pedon, on_missing = "silent")
    data.frame(
      Sistema = c("WRB 2022", "SiBCS 5ª ed.", "USDA ST 13"),
      Nome    = c(todos$wrb$name, todos$sibcs$name, todos$usda$name)
    )
    #>        Sistema                                                         Nome
    #> 1     WRB 2022                    Chromic Ferralsol (Clayic, Ochric, Rubic)
    #> 2 SiBCS 5ª ed. Latossolos Vermelhos Distroficos tipicos, argilosa, moderado
    #> 3   USDA ST 13                                               Typic Hapludox

Para um Latossolo Vermelho típico do Cerrado / Mata Atlântica brasileira, esperamos:

- WRB: `Geric Ferric Rhodic Chromic Ferralsol (...)`
- SiBCS: `Latossolos Vermelhos Distroficos tipicos`
- USDA: `Rhodic Hapludox`

A correspondência entre os três sistemas (Schad 2023, Annex Table 1) está documentada no pacote — veja `vignette("v03_cross_system_correlation", package = "soilKey")`.

# 6. Onde ir a partir daqui

Vinheta | Tópico
--- | ---
`v02_classify_wrb_end_to_end` | WRB 2022 com nome canônico do Cap. 6 (qualifiers + suplementares + specifiers)
`v03_cross_system_correlation` | Correspondência WRB ↔︎ SiBCS ↔︎ USDA
`v04_vlm_extraction` | Extração multimodal (PDF, foto) via VLM com schema validation
`v05_spatial_spectra_pipeline` | Prior espacial (SoilGrids) + gap-filling com OSSL
`v06_wosis_benchmark` | Protocolo de validação contra a base WoSIS (ISRIC)
`v07_end_to_end_pipeline` | Pipeline completo (Gemma 4 + espacial + espectral + chave + relatório)
`v08_kssl_nasis_multilevel` | Benchmark USDA Soil Taxonomy 13ed em quatro níveis (Order/Suborder/Great Group/Subgroup) na base KSSL+NASIS

Para a comunidade brasileira: o caminho mais natural é começar aqui (`v01_getting_started_pt`), depois ir para `v03_cross_system_correlation` para entender a correspondência SiBCS ↔︎ WRB ↔︎ USDA, e finalmente `v06_wosis_benchmark` se você quiser validar contra dados reais.

# 7. Onde reportar bugs / sugerir features / pedir ajuda

- Bugs reproduzíveis: abra uma issue no GitHub usando o template “🐛 Bug report”.
- Pedido de feature (novo diagnóstico, qualifier, loader): use o template “💡 Feature request”.
- Discordância sobre classificação de um perfil real: use o template “🌱 Soil profile classification help” — colamos juntos o trace da chave e identificamos exatamente onde soilKey divergiu da sua expectativa.
- Perguntas gerais: abra uma issue com o template “🌱 Soil profile classification help” ou veja a documentação completa.

# Referências canônicas

- IUSS Working Group WRB (2022). World Reference Base for Soil Resources, 4ª ed. International Union of Soil Sciences, Vienna. PDF (`https://openknowledge.fao.org/server/api/core/bitstreams/bcdecec7-f45f-4dc5-beb1-97022d29fab4/content`)
- Soil Survey Staff (2022). Keys to Soil Taxonomy, 13ª ed. USDA-NRCS, Washington, DC.
- Santos, H.G. et al. (2018). Sistema Brasileiro de Classificação de Solos, 5ª ed. revista e ampliada. Embrapa, Brasília.