# 81. Query: ottieni il GeoJSON di "EquationMap"

Ottieni GeoJSON di "EquationMaps" filtrati per `equationMapUuids`.

L'attributo `equationMapGeojson` contiene GeoJSON con i `Poligoni` o `MultyPolygons` inclusi gli attributi delle feature geospaziali come `id`, `value` e `area` nelle unità definite.

Dettagli chiave:

* Parametro `asMultiGeometry: true` significa che il `Poligoni` (celle della "Equation Map") saranno uniti in `MultiPoligoni` basato sul `value` attributo di ogni cella della "Equation Map".
* L'area di output può essere configurata utilizzando il `unit` parametro. Opzioni disponibili: `ACRI`,  `ETTARI`, `METRI_QUADRATI`

{% code overflow="wrap" lineNumbers="true" %}

```graphql
query GetEquationMapGeometries {
  getFields (filter: {fieldUuid: "<placeholder_of_farm_uuid>"}) {
    fields {
      equationMaps(equationMapUuids: ["<placeholder_of_equationmap_uuid>"]) {
        equationMapGeojson(unit: HECTARES, asMultiGeometry: true)        
      }
    }
  }
}
```

{% endcode %}

Se le geometrie non sono richieste (sono necessari solo gli attributi), allora c'è `attributesJson` invece di `equationMapGeojson` da usare.

{% code overflow="wrap" lineNumbers="true" %}

```graphql
query GetEquationMapAttributes {
  getFields (filter: {fieldUuid: "<placeholder_of_farm_uuid>"}) {
    fields {
      equationMaps(equationMapUuids: ["<placeholder_of_equationmap_uuid>"]) {
        attributesJson(unit: HECTARES, asMultiGeometry: true)        
      }
    }
  }
}
```

{% endcode %}


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