> For the complete documentation index, see [llms.txt](https://docs.geopard.tech/geopard-tutorials/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.geopard.tech/geopard-tutorials/nl/api-documentatie/overzicht-van-geopard-api-verzoeken/81.-query-geojson-van-equationmap-ophalen.md).

# 81. Query: GeoJSON van "EquationMap" ophalen

Haal GeoJSON van "EquationMaps" gefilterd op `equationMapUuids`.

Het attribuut `equationMapGeojson` bevat GeoJSON met de `Polygonen` of `MultyPolygons` inclusief de georuimtelijke kenmerkattributen zoals `id`, `value` en `oppervlakte` in de gedefinieerde eenheden.

Belangrijke details:

* Parameter `asMultiGeometry: true` betekent dat de `Polygonen` ("Equation Map" cellen) zullen worden samengevoegd tot `MultiPolygonen` op basis van de `value` attribuut van elke "Equation Map" cel.
* De uitvoeroppervlakte kan worden geconfigureerd met behulp van de `eenheid` parameter. Beschikbare opties: `ACRES`,  `HECTARES`, `SQUARE_METERS`

{% 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 %}

Als geometrieën niet worden opgevraagd (alleen attributen zijn vereist), dan is er `attributesJson` in plaats van `equationMapGeojson` om te gebruiken.

{% 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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