# 90. Query: Satellietbeeldgegevens ophalen op basis van geometrie

Haal vegetatie-indexstatistieken op voor willekeurige ad-hoc geometrie - **geen geregistreerde perceelsgrens vereist**. Deze endpoint berekent samenvattende statistieken voor pixels binnen uw geometrie terwijl **bewolkte pixels negeert**. Momenteel ondersteund op **Sentinel2 (S2)** , **Landsat (L4/L5/L7/L8/L9)** en **Planet (PS)** providers.

{% hint style="danger" %}
Deze pagina volgt GeoPard’s API-patronen en [authenticatie](https://docs.geopard.tech/geopard-tutorials/api-docs/authorization-apikey-credentials-or-oauth-2.0) gebruikt in de GraphQL-endpoints.
{% endhint %}

## Wat u kunt doen

* Opvragen **vegetatie-indexen** voor **Point, MultiPoint, Polygon en MultiPolygon** geometrieën.
* Kies beeldmateriaal **providers**: `S2`, `L4`, `L5`, `L7`, `L8`, `L9`, `PS`. 
* Ontvang **gedateerde** resultaten per opname met:
  * `wolkenvrij` - fractie van uw geometrie die wolkenvrij is, bereik van waarden van 0 tot 1, waarbij 1 volledig wolkenvrij betekent.
  * `value` - statistieken voor de geselecteerde index berekend **alleen** op wolkenvrije pixels, inclusief `min`, `max`, `avg`, `mdn`, `var`, `std`.
* Optioneel opgeven **reeksen** array van indexwaarde-intervallen voor het berekenen van de dekkingsstatistieken. Wanneer opgegeven, bevat de respons een `reeksen` veld dat toont welk percentage van het gebied binnen elk opgegeven bereik valt.
  * **Oppervlakte ingenomen door elke kleur/bereik** - gebaseerd op indexwaarde (laag => hoog)
  * **Dekkingspercentage** - 0..1 waarde per bereik die het oppervlaktepercentage weergeeft

## Ondersteunde indexen

`EVI2`, `NDVI`, `RVI`, `LAI`, `OSAVI`, `SAVI`, `GNDVI`, `IPVI`, `GCI`, `WDRVI`, `RCI`, `SBI`, `MCARI1`. Indexdefinities volgen GeoPard’s [vegetatie-indexcatalogus](https://docs.geopard.tech/geopard-tutorials/product-tour-web-app/satellite-monitoring/indices-for-crops-and-soils#vegetation-indices) gebruikt in de gehele API.

### Invoerapparaten

<table><thead><tr><th width="119.93487548828125">Veld</th><th width="171.1700439453125">Type</th><th width="105.841064453125">Vereist</th><th>Notities</th></tr></thead><tbody><tr><td><code>index</code></td><td>Enum (zie hierboven)</td><td>✅</td><td>Vegetatie-index om te berekenen.</td></tr><tr><td><code>providers</code></td><td><code>[Provider!]!</code></td><td>✅</td><td>Een van <code>S2</code>, <code>L4</code>, <code>L5</code>, <code>L7</code>, <code>L8</code>, <code>L9</code>, <code>PS</code>.</td></tr><tr><td><code>startDate</code></td><td><code>String (ISO8601)</code></td><td>✅</td><td>Inclusieve start, bijvoorbeeld <code>"2025-05-10T00:00:00.000Z"</code>.</td></tr><tr><td><code>endDate</code></td><td><code>String (ISO8601)</code></td><td>✅</td><td>Exclusieve einddatum of inclusieve einddatum afhankelijk van het schema; stem af op uw andere GeoPard-queries.</td></tr><tr><td><code>geojson</code></td><td><code>String</code></td><td>✅</td><td>Een <strong>geëncodeerde GeoJSON-string</strong> van het type <code>Point</code> / <code>MultiPoint</code> / <code>Polygon</code> / <code>MultiPolygon</code> (WGS84 <code>[lon, lat]</code>). Vergeet niet de aanhalingstekens binnen de string te escapen.</td></tr><tr><td><code>reeksen</code></td><td>[<code>[Float!]!]</code></td><td><strong>❌</strong></td><td>Array van <code>[min, max]</code> paren van indexwaarde-intervallen voor het berekenen van de dekkingsstatistieken</td></tr></tbody></table>

## **Prestatieadvies**

* Voor Polygon/MultiPolygon-geometrieën, houd datumbereiken kort (**\~10–15 dagen**) vanwege verwerkingstijd.
* **Time-out:** 30 s. Gebruik minder dagen en/of minder providers als u de limiet bereikt.
* Voor Point/MultiPoint zijn grotere bereiken meestal prima (punten zijn lichtgewicht).

## Responsvorm

```graphql
graphqlCopyEdit{
  geojson              # echo van uw ingevoerde geometrie (geëncodeerd als string)
  data: [
    {
      uuid             # rasterscène-id
      provider         # S2, L8, L9, ...
      acquisitionDate  # ISO8601
      cloudfree        # 0..1 fractie van wolkenvrij gebied
      value: {
        index          # bijv. NDVI
        min
        max
        avg
        mdn
        var
        std
      }
      ranges: {
        value
        coverage
      }
    }
  ]
}
```

## Voorbeeld 1: MultiPolygon met MCARI1 op S2/L8/L9 binnen een venster van 5 dagen

### Aanvragen

```graphql
query GetSatelliteImageryDataByMultiPolygon {
  getSatelliteImageryDataByGeometry(
    input: {
      index: MCARI1                # stel hier de index in
      providers: [S2, L8, L9]      # satellietproviders
      startDate: "2025-05-10T00:00:00.000Z"  # polygonen: bij voorkeur 10–15 dagen; 30s time-out
      endDate:   "2025-05-15T00:00:00.000Z"
      geojson: "{\"type\": \"MultiPolygon\", \"coordinates\":[ [ [ [ 8.09058546, 50.21774961 ], [ 8.09291004, 50.21836077 ], [ 8.09328559, 50.21844893 ], [ 8.09341412, 50.21777585 ], [ 8.09342329, 50.21768228 ], [ 8.09342736, 50.21748691 ], [ 8.09342239, 50.21741988 ], [ 8.09331503, 50.2169872 ], [ 8.09327725, 50.21680672 ], [ 8.0932114, 50.21679383 ], [ 8.09307662, 50.216784 ], [ 8.09268795, 50.21672443 ], [ 8.09256905, 50.21670175 ], [ 8.09160986, 50.21647789 ], [ 8.09153097, 50.21647138 ], [ 8.09144745, 50.216479 ], [ 8.09128792, 50.21653615 ], [ 8.09124139, 50.21654808 ], [ 8.09119362, 50.21655407 ], [ 8.09085379, 50.21653536 ], [ 8.09039423, 50.21649463 ], [ 8.09006609, 50.21646137 ], [ 8.08994025, 50.21644261 ], [ 8.08956206, 50.21636986 ], [ 8.08937343, 50.21632184 ], [ 8.08881276, 50.21616093 ], [ 8.08860924, 50.21608589 ], [ 8.08848952, 50.21605007 ], [ 8.08841856, 50.21616403 ], [ 8.08836721, 50.2162167 ], [ 8.08830625, 50.21626762 ], [ 8.08801583, 50.21648103 ], [ 8.08783363, 50.21660479 ], [ 8.08757577, 50.21677569 ], [ 8.08741435, 50.21686857 ], [ 8.08769592, 50.21696741 ], [ 8.08853411, 50.21720846 ], [ 8.08965086, 50.2174967 ], [ 8.09058546, 50.21774961 ] ] ] ]}"
    }
  ) {
    geojson
    data {
      uuid
      provider
      acquisitionDate
      cloudfree     # 0..1
      value {       # statistieken berekend alleen op wolkenvrije pixels
        index
        min
        max
        avg
        mdn
        var
        std
      }
    }
  }
}
```

### Respons

```json
{
  "data": {
    "getSatelliteImageryDataByGeometry": {
      "geojson": "\"{\\\"type\\\": \\\"MultiPolygon\\\", \\\"coordinates\\\": [[[[8.09058546, 50.21774961], [8.09291004, 50.21836077], [8.09328559, 50.21844893], [8.09341412, 50.21777585], [8.09342329, 50.21768228], [8.09342736, 50.21748691], [8.09342239, 50.21741988], [8.09331503, 50.2169872], [8.09327725, 50.21680672], [8.0932114, 50.21679383], [8.09307662, 50.216784], [8.09268795, 50.21672443], [8.09256905, 50.21670175], [8.09160986, 50.21647789], [8.09153097, 50.21647138], [8.09144745, 50.216479], [8.09128792, 50.21653615], [8.09124139, 50.21654808], [8.09119362, 50.21655407], [8.09085379, 50.21653536], [8.09039423, 50.21649463], [8.09006609, 50.21646137], [8.08994025, 50.21644261], [8.08956206, 50.21636986], [8.08937343, 50.21632184], [8.08881276, 50.21616093], [8.08860924, 50.21608589], [8.08848952, 50.21605007], [8.08841856, 50.21616403], [8.08836721, 50.2162167], [8.08830625, 50.21626762], [8.08801583, 50.21648103], [8.08783363, 50.21660479], [8.08757577, 50.21677569], [8.08741435, 50.21686857], [8.08769592, 50.21696741], [8.08853411, 50.21720846], [8.08965086, 50.2174967], [8.09058546, 50.21774961]]]]}\"",
      "data": [
        {
          "uuid": "16c45077-3138-5a9a-9947-d9e54ea77e38",
          "provider": "S2",
          "acquisitionDate": "2025-05-13T10:37:03.661000+00:00",
          "cloudfree": 1,
          "value": {
            "index": "MCARI1",
            "min": 3026.88,
            "max": 6452.881,
            "avg": 5020.917,
            "mdn": 5086.56,
            "var": 437905.281,
            "std": 661.744
          }
        },
        {
          "uuid": "cf5d9e51-c0db-5e02-bf97-35c3e7a0fe07",
          "provider": "S2",
          "acquisitionDate": "2025-05-13T10:47:13.154000+00:00",
          "cloudfree": 1,
          "value": {
            "index": "MCARI1",
            "min": 3441.96,
            "max": 6722.04,
            "avg": 5333.138,
            "mdn": 5403.36,
            "var": 372277.75,
            "std": 610.146
          }
        },
        {
          "uuid": "de9b6b8a-a195-5694-98a0-f17e8122855d",
          "provider": "S2",
          "acquisitionDate": "2025-05-11T10:47:17.500000+00:00",
          "cloudfree": "0.5547445255474452",
          "value": {
            "index": "MCARI1",
            "min": 3438.96,
            "max": 6495.96,
            "avg": 5176.501,
            "mdn": 5181,
            "var": 377633.031,
            "std": 614.519
          }
        },
        {
          "uuid": "917b3657-3ddc-5f43-b39f-5d8493282bde",
          "provider": "S2",
          "acquisitionDate": "2025-05-10T10:37:15.656000+00:00",
          "cloudfree": 1,
          "value": {
            "index": "MCARI1",
            "min": 3395.88,
            "max": 6272.881,
            "avg": 4975.816,
            "mdn": 4999.56,
            "var": 333405.031,
            "std": 577.412
          }
        },
        {
          "uuid": "3fc7ed30-677a-5430-a10b-3490d903616c",
          "provider": "L8",
          "acquisitionDate": "2025-05-12T10:21:17.302000+00:00",
          "cloudfree": 1,
          "value": {
            "index": "MCARI1",
            "min": 3171.24,
            "max": 5361,
            "avg": 4227.754,
            "mdn": 4267.68,
            "var": 261266,
            "std": 511.142
          }
        },
        {
          "uuid": "f3d1bd32-e3c8-5260-ba4c-d84c6a171986",
          "provider": "L9",
          "acquisitionDate": "2025-05-13T10:15:17.115000+00:00",
          "cloudfree": 1,
          "value": {
            "index": "MCARI1",
            "min": 3353.52,
            "max": 5451.72,
            "avg": 4428.534,
            "mdn": 4491.48,
            "var": 306042.719,
            "std": 553.211
          }
        }
      ]
    }
  }
}
```

## Voorbeeld 2: MultiPoint met NDVI op S2/L8/L9 over een venster van 5 dagen

### Aanvragen

```graphql
query GetSatelliteImageryDataByMultiPoint {
  getSatelliteImageryDataByGeometry(
    input: {
      providers: [S2, L8, L9]
      index: NDVI
      startDate: "2025-05-10T00:00:00.000Z"   # punten zijn lichtgewicht; grotere vensters zijn OK; 30s time-out
      endDate:   "2025-05-15T00:00:00.000Z"
      geojson: "{\"type\": \"MultiPoint\", \"coordinates\": [[8.088754, 50.216859],[8.092651, 50.216905],[ 8.090799, 50.217442]]}"
    }
  ) {
    geojson
    data {
      uuid
      provider
      acquisitionDate
      wolkenvrij
      value {
        index
        min
        max
        avg
        mdn
        var
        std
      }
    }
  }
}
```

### Respons

```json
{
  "data": {
    "getSatelliteImageryDataByGeometry": {
      "geojson": "\"{\\\"type\\\": \\\"MultiPoint\\\", \\\"coordinates\\\": [[8.088754, 50.216859], [8.092651, 50.216905], [8.090799, 50.217442]]}\"",
      "data": [
        {
          "uuid": "cf5d9e51-c0db-5e02-bf97-35c3e7a0fe07",
          "provider": "S2",
          "acquisitionDate": "2025-05-13T10:47:13.154000+00:00",
          "cloudfree": 1,
          "value": {
            "index": "NDVI",
            "min": 0.712,
            "max": 0.873,
            "avg": 0.815,
            "mdn": 0.824,
            "var": 0.002,
            "std": 0.041
          }
        },
        {
          "uuid": "16c45077-3138-5a9a-9947-d9e54ea77e38",
          "provider": "S2",
          "acquisitionDate": "2025-05-13T10:37:03.661000+00:00",
          "cloudfree": 1,
          "value": {
            "index": "NDVI",
            "min": 0.642,
            "max": 0.856,
            "avg": 0.779,
            "mdn": 0.794,
            "var": 0.003,
            "std": 0.055
          }
        },
        {
          "uuid": "de9b6b8a-a195-5694-98a0-f17e8122855d",
          "provider": "S2",
          "acquisitionDate": "2025-05-11T10:47:17.500000+00:00",
          "cloudfree": "0.6363636363636364",
          "value": {
            "index": "NDVI",
            "min": 0.762,
            "max": 0.857,
            "avg": 0.826,
            "mdn": 0.83,
            "var": 0.001,
            "std": 0.029
          }
        },
        {
          "uuid": "917b3657-3ddc-5f43-b39f-5d8493282bde",
          "provider": "S2",
          "acquisitionDate": "2025-05-10T10:37:15.656000+00:00",
          "cloudfree": 1,
          "value": {
            "index": "NDVI",
            "min": 0.667,
            "max": 0.854,
            "avg": 0.79,
            "mdn": 0.802,
            "var": 0.002,
            "std": 0.048
          }
        },
        {
          "uuid": "3fc7ed30-677a-5430-a10b-3490d903616c",
          "provider": "L8",
          "acquisitionDate": "2025-05-12T10:21:17.302000+00:00",
          "cloudfree": 1,
          "value": {
            "index": "NDVI",
            "min": 0.746,
            "max": 0.87,
            "avg": 0.814,
            "mdn": 0.833,
            "var": 0.002,
            "std": 0.039
          }
        },
        {
          "uuid": "f3d1bd32-e3c8-5260-ba4c-d84c6a171986",
          "provider": "L9",
          "acquisitionDate": "2025-05-13T10:15:17.115000+00:00",
          "cloudfree": 1,
          "value": {
            "index": "NDVI",
            "min": 0.707,
            "max": 0.85,
            "avg": 0.795,
            "mdn": 0.813,
            "var": 0.002,
            "std": 0.05
          }
        }
      ]
    }
  }
}
```

## Voorbeeld 3: MultiPolygon met NDVI op S2/L8/L9 met bereiken binnen een venster van 5 dagen

### Aanvragen

```graphql
query GetSatelliteImageryDataByMultiPolygon {
  getSatelliteImageryDataByGeometry(
    input: {
      index: NDVI                # stel hier de index in
      providers: [S2, L8, L9]      # satellietproviders
      startDate: "2025-05-10T00:00:00.000Z"  # polygonen: bij voorkeur 10–15 dagen; 30s time-out
      endDate:   "2025-05-15T00:00:00.000Z"
      geojson: "{\"type\": \"MultiPolygon\", \"coordinates\":[ [ [ [ 8.09058546, 50.21774961 ], [ 8.09291004, 50.21836077 ], [ 8.09328559, 50.21844893 ], [ 8.09341412, 50.21777585 ], [ 8.09342329, 50.21768228 ], [ 8.09342736, 50.21748691 ], [ 8.09342239, 50.21741988 ], [ 8.09331503, 50.2169872 ], [ 8.09327725, 50.21680672 ], [ 8.0932114, 50.21679383 ], [ 8.09307662, 50.216784 ], [ 8.09268795, 50.21672443 ], [ 8.09256905, 50.21670175 ], [ 8.09160986, 50.21647789 ], [ 8.09153097, 50.21647138 ], [ 8.09144745, 50.216479 ], [ 8.09128792, 50.21653615 ], [ 8.09124139, 50.21654808 ], [ 8.09119362, 50.21655407 ], [ 8.09085379, 50.21653536 ], [ 8.09039423, 50.21649463 ], [ 8.09006609, 50.21646137 ], [ 8.08994025, 50.21644261 ], [ 8.08956206, 50.21636986 ], [ 8.08937343, 50.21632184 ], [ 8.08881276, 50.21616093 ], [ 8.08860924, 50.21608589 ], [ 8.08848952, 50.21605007 ], [ 8.08841856, 50.21616403 ], [ 8.08836721, 50.2162167 ], [ 8.08830625, 50.21626762 ], [ 8.08801583, 50.21648103 ], [ 8.08783363, 50.21660479 ], [ 8.08757577, 50.21677569 ], [ 8.08741435, 50.21686857 ], [ 8.08769592, 50.21696741 ], [ 8.08853411, 50.21720846 ], [ 8.08965086, 50.2174967 ], [ 8.09058546, 50.21774961 ] ] ] ]}"
      ranges: [
        [0.0, 0.5],
        [0.5, 0.55],
        [0.55, 0.6],
        [0.6, 0.65],
        [0.65, 0.7],
        [0.7, 0.75],
        [0.75, 0.8],
        [0.8, 0.85],
        [0.85, 0.9]
      ]
    }
  ) {
    geojson
    data {
      uuid
      provider
      acquisitionDate
      cloudfree     # 0..1
      value {       # statistieken berekend alleen op wolkenvrije pixels
        index
        min
        max
        avg
        mdn
        var
        std
      }
      ranges {
        value
        coverage   # 0..1
      }
    }
  }
}
```

### Respons

```json
{
  "data": {
    "getSatelliteImageryDataByGeometry": {
      "geojson": "{\"type\":\"MultiPolygon\",\"coordinates\":[[[[8.09058546,50.21774961],[8.09291004,50.21836077],[8.09328559,50.21844893],[8.09341412,50.21777585],[8.09342329,50.21768228],[8.09342736,50.21748691],[8.09342239,50.21741988],[8.09331503,50.2169872],[8.09327725,50.21680672],[8.0932114,50.21679383],[8.09307662,50.216784],[8.09268795,50.21672443],[8.09256905,50.21670175],[8.09160986,50.21647789],[8.09153097,50.21647138],[8.09144745,50.216479],[8.09128792,50.21653615],[8.09124139,50.21654808],[8.09119362,50.21655407],[8.09085379,50.21653536],[8.09039423,50.21649463],[8.09006609,50.21646137],[8.08994025,50.21644261],[8.08956206,50.21636986],[8.08937343,50.21632184],[8.08881276,50.21616093],[8.08860924,50.21608589],[8.08848952,50.21605007],[8.08841856,50.21616403],[8.08836721,50.2162167],[8.08830625,50.21626762],[8.08801583,50.21648103],[8.08783363,50.21660479],[8.08757577,50.21677569],[8.08741435,50.21686857],[8.08769592,50.21696741],[8.08853411,50.21720846],[8.08965086,50.2174967],[8.09058546,50.21774961]]]]}",
      "data": [
        {
          "uuid": "cf5d9e51-c0db-5e02-bf97-35c3e7a0fe07",
          "provider": "S2",
          "acquisitionDate": "2025-05-13T10:47:13.154000+00:00",
          "cloudfree": 1,
          "value": {
            "index": "NDVI",
            "min": 0.625,
            "max": 0.873,
            "avg": 0.795,
            "mdn": 0.808,
            "var": 0.003,
            "std": 0.051
          },
          "ranges": [
            { "value": [0, 0.5], "coverage": 0 },
            { "value": [0.5, 0.55], "coverage": 0 },
            { "value": [0.55, 0.6], "coverage": 0 },
            { "value": [0.6, 0.65], "coverage": 0.0089 },
            { "value": [0.65, 0.7], "coverage": 0.0514 },
            { "value": [0.7, 0.75], "coverage": 0.1288 },
            { "value": [0.75, 0.8], "coverage": 0.2603 },
            { "value": [0.8, 0.85], "coverage": 0.4575 },
            { "value": [0.85, 0.9], "coverage": 0.0932 }
          ]
        },
        {
          "uuid": "917b3657-3ddc-5f43-b39f-5d8493282bde",
          "provider": "S2",
          "acquisitionDate": "2025-05-10T10:37:15.656000+00:00",
          "cloudfree": 1,
          "value": {
            "index": "NDVI",
            "min": 0.585,
            "max": 0.854,
            "avg": 0.768,
            "mdn": 0.78,
            "var": 0.003,
            "std": 0.056
          },
          "ranges": [
            { "value": [0, 0.5], "coverage": 0 },
            { "value": [0.5, 0.55], "coverage": 0 },
            { "value": [0.55, 0.6], "coverage": 0.0014 },
            { "value": [0.6, 0.65], "coverage": 0.0342 },
            { "value": [0.65, 0.7], "coverage": 0.1205 },
            { "value": [0.7, 0.75], "coverage": 0.161 },
            { "value": [0.75, 0.8], "coverage": 0.3233 },
            { "value": [0.8, 0.85], "coverage": 0.3479 },
            { "value": [0.85, 0.9], "coverage": 0.0116 }
          ]
        },
        {
          "uuid": "16c45077-3138-5a9a-9947-d9e54ea77e38",
          "provider": "S2",
          "acquisitionDate": "2025-05-13T10:37:03.661000+00:00",
          "cloudfree": 1,
          "value": {
            "index": "NDVI",
            "min": 0.548,
            "max": 0.856,
            "avg": 0.756,
            "mdn": 0.769,
            "var": 0.004,
            "std": 0.061
          },
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            { "value": [0.55, 0.6], "coverage": 0.011 },
            { "value": [0.6, 0.65], "coverage": 0.05 },
            { "value": [0.65, 0.7], "coverage": 0.1198 },
            { "value": [0.7, 0.75], "coverage": 0.2231 },
            { "value": [0.75, 0.8], "coverage": 0.295 },
            { "value": [0.8, 0.85], "coverage": 0.295 },
            { "value": [0.85, 0.9], "coverage": 0.0041 }
          ]
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        {
          "uuid": "de9b6b8a-a195-5694-98a0-f17e8122855d",
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          "cloudfree": 0.6067415730337079,
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          },
          "ranges": [
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            { "value": [0.6, 0.65], "coverage": 0.0311 },
            { "value": [0.65, 0.7], "coverage": 0.0377 },
            { "value": [0.7, 0.75], "coverage": 0.1964 },
            { "value": [0.75, 0.8], "coverage": 0.3097 },
            { "value": [0.8, 0.85], "coverage": 0.3541 },
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          ]
        },
        {
          "uuid": "3fc7ed30-677a-5430-a10b-3490d903616c",
          "provider": "L8",
          "acquisitionDate": "2025-05-12T10:21:17.302000+00:00",
          "cloudfree": 1,
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            { "value": [0.65, 0.7], "coverage": 0.0784 },
            { "value": [0.7, 0.75], "coverage": 0.201 },
            { "value": [0.75, 0.8], "coverage": 0.2451 },
            { "value": [0.8, 0.85], "coverage": 0.3873 },
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          ]
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          "uuid": "f3d1bd32-e3c8-5260-ba4c-d84c6a171986",
          "provider": "L9",
          "acquisitionDate": "2025-05-13T10:15:17.115000+00:00",
          "cloudfree": 1,
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          },
          "ranges": [
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            { "value": [0.55, 0.6], "coverage": 0 },
            { "value": [0.6, 0.65], "coverage": 0.0495 },
            { "value": [0.65, 0.7], "coverage": 0.0842 },
            { "value": [0.7, 0.75], "coverage": 0.203 },
            { "value": [0.75, 0.8], "coverage": 0.3069 },
            { "value": [0.8, 0.85], "coverage": 0.3465 },
            { "value": [0.85, 0.9], "coverage": 0.0099 }
          ]
        }
      ]
    }
  }
}

```


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.geopard.tech/geopard-tutorials/nl/api-docs/overzicht-van-api-verzoeken-van-geopard/90.-query-satellietbeeldgegevens-ophalen-op-basis-van-geometrie.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.