# 75. Mutação: Gerar "EquationMap" de forma assíncrona

## Visão geral

Gerar "EquationMap" para o "Field" de forma assíncrona.

{% hint style="info" %}
A abordagem assíncrona coloca uma tarefa (Gerar "`generateEquationMap`") para processar e a Assinatura será recebida assim que o processamento for concluído.
{% endhint %}

## Camadas de Dados Suportadas

EquationMaps podem ser executados em qualquer camada de dados disponível no GeoPard, incluindo Imagens de Satélite, Conjuntos de Dados de Solo, Conjuntos de Dados de Rendimento, Conjuntos de Dados As-Applied, Topografia, Mapas de Zonas e até outros EquationMaps. O formato de `dataVariables` entrada variará dependendo da camada de dados selecionada.

```graphql
dataVariables: [
  # YieldDataset
  {
    variable: "yield_variable"
    yieldDatasetUuid: "<placeholder_of_yielddataset_uuid>"
    yieldAttribute: "<placeholder_of_yielddataset_attribute>"
  }, 
  
  # SoilDataset
  {
    variable: "soil_variable"
    soilDatasetUuid: "<placeholder_of_soildataset_uuid>"
    soilAttribute: "<placeholder_of_soildataset_attribute>"
  },
  
  # AsAppliedDataset
  {
    variable: "asapplied_variable"
    asAppliedDatasetUuid: "<placeholder_of_asapplieddataset_uuid>"
    asAppliedAttribute: "<placeholder_of_asapplieddataset_attribute>"
  },
  
  # SatelliteImage
  {
    variable: "satelliteimage_variable"
    satelliteImageUuids: ["<placeholder_of_satelliteimage_uuid>"]
    index: "<placeholder_of_satelliteimage_vegetation_index>"
  },
  
  # TopographyMap
  {
    variable: "topography_variable"
    topographyMapUuid: "<placeholder_of_topographymap_uuid>"
    topographyAttribute: "<placeholder_of_topography_attribute>"
  },
  
  # EquationMap
  {
    variable: "equationmap_variable"
    equationMapUuid: "<placeholder_of_equationmap_uuid>"
  },
  
  # ZonesMap (VectorAnalysisMap)
  {
    variable: "zonesmap_variable"
    vectorAnalysisMapUuid: "<placeholder_of_zonesmap_uuid>"
  }
]
```

## Exemplo

<pre class="language-graphql" data-overflow="wrap" data-line-numbers><code class="lang-graphql">mutation GenerateEquationMap {
  generateEquationMapAsync(input: {
    fieldUuid: "&#x3C;placeholder_of_field_uuid>"
    gridPixelSizeX: <a data-footnote-ref href="#user-content-fn-1">30</a>
    gridPixelSizeY: <a data-footnote-ref href="#user-content-fn-1">30</a>
    type: FERTILIZING
    equationAsText:"""calculated = yield_vol/prod + 0.5
if calculated >= 9:
    result = 35
elif calculated >=5  and calculated &#x3C; 9:
    result = 25
else:
    result = 15
    """
    equationResultVariable: "result"
    dataVariables: [{
      variable: "yield_vol"
      yieldDatasetUuid: "&#x3C;placeholder_of_yielddataset_uuid>"
      yieldAttribute: "Yld_Vol_We"
    }, {
      variable: "prod"
      yieldDatasetUuid: "&#x3C;placeholder_of_yielddataset_uuid>"
      yieldAttribute: "Prod_ac_h_"
    }]
  }) {
    uuid
    fieldUuid
    statusCode
  }
}
</code></pre>

[^1]: coloque qualquer tamanho de pixel em metros aqui


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