This guide offers a quick access to a selection of COALA API request to obtain the COALA products. An example package is prepared as a Postman software collection.
The guide includes the following steps:
Postman download (external link)
The response shows the ROI for the user “coala” and the properties of these ROI.
For example, the ROI called “prova” is processing data for the last 30 days (period=30 days) and it is considering only Sentinel-2 (S2) observations with a cloud cover below 30%.
Subsequently, the S2 granules active for this region are listed. The response further show the actual geometry of the ROI.
The response shows the S2 specific indicators that are active for the ROI. In this cases, Leaf Area Index (LAI) and NDVI.
In addition, NDVI is obtained with a daily temporal resolution considering a period of 90 days. Daily data are the results of an interpolation process.
Let’s try to query some data for a demo polygon with the following geometry (geoJSON text format):
{ “type”: “MultiPolygon”, “coordinates”: [ [ [ [ 146.036819740052692, -34.371579922914933 ], [ 146.042928273087199, -34.373860991110092 ], [ 146.045358803594723, -34.375037902153309 ], [ 146.046928458682828, -34.377365990743009 ], [ 146.047210835807022, -34.378856952593914 ], [ 146.043918229143344, -34.378913980976535 ], [ 146.043167300844942, -34.379156238728456 ], [ 146.034252707750568, -34.377969639194838 ], [ 146.034222297957001, -34.376273865678044 ], [ 146.036242759803201, -34.374056651420247 ], [ 146.036819740052692, -34.371579922914933 ] ] ] ] }
The response shows the S2 specific indicators that are active for the ROI. In this cases, Leaf Area Index (LAI) and NDVI.
In addition, NDVI is obtained with a daily temporal resolution considering a period of 90 days. Daily data are the results of an interpolation process.
