> 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/fr/documentation-api/vue-densemble-des-requetes-de-lapi-geopard/51.-requete-obtenir-les-donnees-maillees-de-yielddataset.md).

# 51. Requête : obtenir les données maillées de « YieldDataset »

Requête pour obtenir des données en grille à partir du jeu de données raster lié à "YieldDataset" en tant que `GEOJSON`  avec des points ou `GEOTIFF`.L'attribut properties contient tous les attributs du jeu de données par point. 

#### 1. Demander un fichier à exporter

{% hint style="danger" %}
Il est recommandé de récupérer un seul jeu de données avec `sourceDataUrl` par requête. 
{% endhint %}

`PasDeTampon`, `PlusUnPixel`, `PlusDeuxPixels`, `MoinsUnPixel`, et `MoinsDeuxPixels` sont disponibles en tant que `tampon`.

`GEOJSON` et `GEOTIFF` sont disponibles en tant que format. 

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

```graphql
query GetGriddedDataFromYieldDataset {
  getFarms (farmUuids: ["<placeholder_of_farm_uuid>"]){
    uuid
    fields (fieldUuids: ["<placeholder_of_field_uuid>"]) {
      uuid
      yieldDatasets(yieldDatasetUuids: ["<placeholder_of_dataset_uuid>"]) {
        uuid
        sourceDataUrl(format: GEOJSON buffer: PlusTwoPixels)
      }
    }
  }
}
```

{% endcode %}

#### 2. Télécharger le fichier généré

Après la préparation réussie du fichier, il est possible de le télécharger en utilisant `curl` ou une approche similaire.

{% hint style="danger" %}
`sourceDataUrl` le lien est accessible uniquement pendant **60 s.**
{% endhint %}

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

```bash
curl '<sourceDataUrl>' --compressed >> '<local_filepath>'
```

{% endcode %}


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