> 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/ltu/api-dokumentacija/geo-galutiniai-taskai-erdviniu-duomenu-prieigai/wms-gauti-erdviniu-duomenu-sluoksniu-rastrinius-vaizdus/16.-palydovinis-vaizdas-apkarpytas-pagal-lauko-riba.md). # 16. Palydovinis vaizdas: apkarpytas pagal lauko ribą Tikslus (ne pikseliuotas) palydovinio vaizdo iškarpymas pagal apibrėžtą lauko ribą yra prieinamas įvairiems rodymams, pavyzdžiui `RGB, NIR, EVI2, LAI, NDVI, GNDVI, IPVI, GCI, SAVI, OSAVI, NDWI, WDRVI, NDMI, MCARI`, ir kt. Kiekvienas SatelliteImage turi `geoMaps` objektą, kuriame laikomi atvaizdavimo duomenys, tokie kaip `url`, spalvų kodai, klasės ir pavadinimas. Šie duomenys randami `laukelyje` -> `satelliteImages` -> `geoMaps` atributas. Šis `url` konkrečiai naudojamas žemėlapiams rodyti kaip WMS sluoksnis. Pavyzdžiui, žemiau pateikti NIR ir WDRVI rodinių išvesties pavyzdžiai. ### Artimas infraraudonasis (NIR), WDRVI ir WDRVI kontrastas ![NIR](https://570611445-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FYICBELdyAXXebKAzfLOR%2Fuploads%2FBO5IUPWygVgPKpMAsela%2Fimage.png?alt=media\&token=23504b6c-df7c-460e-b1cd-b184fe86c575) ![WDRVI](https://570611445-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FYICBELdyAXXebKAzfLOR%2Fuploads%2FWWNyxHuZj4eEkSrUPEN1%2Fimage.png?alt=media\&token=8cccb814-3eb8-4b55-b1eb-ff0609091f68) ![WDRVI Contrast](https://570611445-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FYICBELdyAXXebKAzfLOR%2Fuploads%2F7f0VDnbb4I5kiw7OdDg5%2Fimage.png?alt=media\&token=1ccffb9a-88b3-431b-9c8d-703cb784a5e6) Užklausos formatas yra [https://api.geopard.tech/geo/map/reflect?TRANSPARENT=true\&VIEWPARAMS=uuid:\\&TIME=2020-07-22T17%3A50%3A22Z\&BBOX=\\&LAYERS=sentinel2\_wdrvi\_and\_field\&SRS=EPSG%3A900913\&WIDTH=512\&geopardApiKey=\](https://api.geopard.tech/geo/map/reflect?TRANSPARENT=true\&VIEWPARAMS=uuid:). ### URL parametrų paaiškinimas Kur įvesties atributai yra: 1. `VIEWPARAMS=uuid:` turi `uuid` „Lauko“ 2. `TIME=2020-07-22T17%3A50%3A22Z` turi palydovinio vaizdo duomenis formatu YYYY-MM-DDThh:mm:ssZ (URL užkoduota) ir yra „FieldSatelliteImagery“ entity su `acquisitionDate` atributu; 3. `BBOX=` yra lauko rėmelio langas (URL koduotas) EPSG:3857 projekcijoje; 4. `WIDTH=512` nurodo išvesties vaizdo dydį pikseliais (tikslaus skaičiaus reikšmė svarbi tik jei naudojama kaip miniatiūra); 5. `geopardApiKey=` yra susieta su autorizacijos galimybe per API raktą; 6. `LAYERS=sentinel2_wdrvi_and_field` atsispindi stilių, tiekėjo atributas yra „FieldSatelliteImagery“ entity. Galimos parinktys Sentinel2 (`S2`) vaizdams `LAYERS` yra: `sentinel2_ndvi_and_field` `sentinel2_evi2_and_field` `sentinel2_rgb_and_field` `sentinel2_gci_and_field` `sentinel2_lai_and_field` `sentinel2_nir_and_field` `sentinel2_osavi_and_field` `Sentinel2_wdrvi_and_field` galimos parinktys Landsat8 (`L8, L9`) vaizdams `LAYERS` yra: `landsat8_ndvi_and_field` `landsat8_evi2_and_field` `landsat8_rgb_and_field` `landsat8_gci_and_field` `landsat8_lai_and_field` `landsat8_nir_and_field` `landsat8_osavi_and_field` `landsat8_wdrvi_and_field` galimos parinktys Landsat4-7 (`L4, L5, L6, L7`) vaizdams `LAYERS` yra: `landsat4-7_ndvi_and_field` `landsat4-7_evi2_and_field` `landsat4-7_rgb_and_field` `Landsat4-7_gci_and_field` `landsat4-7_lai_and_field` `landsat4-7_nir_and_field` `landsat4-7_osavi_and_field` `landsat4-7_wdrvi_and_field`
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