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hdsmt.md

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HDSM/T Data Query Samples

  1. Get a valid auth token: Generate an API Authorization JWT
  2. Get a list of fields: curl -X GET "https://foundation.agtech.ibm.com/v2/field" -H "accept: application/json; charset=UTF-8" -H "Authorization: Bearer ey .. Q2"
    Sample response: {"properties":{"name":"SampleFieldName1","deleted":false,"creationTime":"2018-09-01T15:06:04Z"},"uuid":"1110b2c9-b727-47ee-97c7-2a0b6497ba6a","type":"Feature"}
    Just get the uuid for the next query: 1110b2c9-b727-47ee-97c7-2a0b6497ba6a
  3. For each field uuid, then get the list of subfields, eg: curl -X GET "https://foundation.agtech.ibm.com/v2/field/1110b2c9-b727-47ee-97c7-2a0b6497ba6a?projection=4326" -H "accept: application/json; charset=UTF-8" -H "Authorization: Bearer ey .. Q2"
    Sample response: {"properties":{"name":"SampleFieldName1","deleted":false,"creationTime":"2018-09-01T15:06:04Z"},"uuid":"1110b2c9-b727-47ee-97c7-2a0b6497ba6a","type":"Feature","subFields":{"features":[{"properties":{"name":"SampleSubFieldName1","area":36225.29372889644,"box":{"north":40.8,"south":...},"centroid":{"latitude":40...,"longitude":-8...},"ianaTimeZone":"America/...","deleted":false},"id":25,"uuid":"f811bed8-306f-4d1e-9059-87680924acca","type":"Feature","geometry":{"type":"Polygon","coordinates":[...},"fieldUuid":"1110b2c9-b727-47ee-97c7-2a0b6497ba6a"}],"type":"FeatureCollection"}}
  4. In the above 1110b2c9-b727-47ee-97c7-2a0b6497ba6a is the field uuid and f811bed8-306f-4d1e-9059-87680924acca is the subfield uuid, so to access the info on data availability of that subfield: curl -X GET "https://foundation.agtech.ibm.com/v2/field/1110b2c9-b727-47ee-97c7-2a0b6497ba6a/subfield/f811bed8-306f-4d1e-9059-87680924acca/layer/HDSM/info" -H "accept: application/json; charset=UTF-8" -H "Authorization: Bearer ey .. Q2"
    Sample response: {"fieldUuid":"1110b2c9-b727-47ee-97c7-2a0b6497ba6a","subFieldUuid":"f811bed8-306f-4d1e-9059-87680924acca","lid":"HDSM","metadata":{"fieldProfile":null},"status":{"scheduled":null,"computing":null,"ready":"2018-09-04"}}
  5. So this says HDSM data is ready for 2018-09-04 date, so get the soil moisture data for that date: curl -X GET "https://foundation.agtech.ibm.com/v2/field/1110b2c9-b727-47ee-97c7-2a0b6497ba6a/subfield/f811bed8-306f-4d1e-9059-87680924acca/layer/HDSM/data?format=GRID&temperature=false&date=2018-09-04" -H "accept: application/octet-stream" -H "Authorization: Bearer ey .. Q2" > subfield-f811bed8-306f-4d1e-9059-87680924acca-soil-moisture-2018-09-04.tiff
  6. Get also the temperature data: curl -X GET "https://foundation.agtech.ibm.com/v2/field/1110b2c9-b727-47ee-97c7-2a0b6497ba6a/subfield/f811bed8-306f-4d1e-9059-87680924acca/layer/HDSM/data?format=GRID&temperature=true&date=2018-09-04" -H "Authorization: Bearer ey .. Q2" > subfield-f811bed8-306f-4d1e-9059-87680924acca-soil-temperature-2018-09-04.tiff
  7. So the HDSM and HDST data now is in the 2 files:
    subfield-f811bed8-306f-4d1e-9059-87680924acca-soil-moisture-2018-09-04.tiff and subfield-f811bed8-306f-4d1e-9059-87680924acca-soil-temperature-2018-09-04.tiff
  8. The downloaded files are geotiff rasters which can be opened with eg QGIS app or any other software library that can handle geo raster data.