Explore how we can implement NDVI as a proto-DT extension

[StefanVriend]

We will add a forecasting component to the proto-DT (#41) to demonstrate the flexibility of adapting a workflow within the VRE. Besides climate scenarios (#42), we try to get access to NDVI data from WUR's AgroDataCube.

[StefanVriend]

AgroDataCube v2.1 has a clearly documented API, which works similar to the APIs of KNMI and Dataverse.

They have NDVI data since 2015 for a series of dates per year. These dates are not consistent between years and it is currently unclear how to list all available dates in R. For now, we extracted dates using the map on this website: https://www.groenmonitor.nl/groenindex.

[StefanVriend]

An alternative source is the European Copernicus. Their Sentinel-2 L2A satellite provides the bands needed to determine NDVI.

There is an R package {openeo} to access these data, but there also exists an REST API: OData.