90. Query: satellietbeeldgegevens op basis van geometrie ophalen

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.

Deze pagina volgt GeoPard’s API-patronen en authenticatie gebruikt in de GraphQL-endpoints.

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 gebruikt in de gehele API.

Invoerapparaten

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

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

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

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

{
  "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

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

{
  "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

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

{
  "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
          },
          "ranges": [
            { "value": [0, 0.5], "coverage": 0 },
            { "value": [0.5, 0.55], "coverage": 0.0021 },
            { "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 }
          ]
        },
        {
          "uuid": "de9b6b8a-a195-5694-98a0-f17e8122855d",
          "provider": "S2",
          "acquisitionDate": "2025-05-11T10:47:17.500000+00:00",
          "cloudfree": 0.6067415730337079,
          "value": {
            "index": "NDVI",
            "min": 0.613,
            "max": 0.865,
            "avg": 0.782,
            "mdn": 0.793,
            "var": 0.003,
            "std": 0.054
          },
          "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": 0.0311 },
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