NIR_for_several_acquisitions_evalscript.js

//VERSION=3
// Script to extract a time series of Band 5 values using 
// Sentinel 2 Level 2A data and  metadata file.
function setup() {
  return {
    input: [{
      bands: ["B05"],
      units: "DN"
    }],
    output: {
      id: "S2_L2A",
      bands: 1,
      sampleType: SampleType.UINT16
    },
    mosaicking: Mosaicking.ORBIT
  }
}

// The following function is designed to update the number of
// output bands without knowing beforehand how many there are
function updateOutput(outputs, collection) {
    Object.values(outputs).forEach((output) => {
        output.bands = collection.scenes.length;
    });
}

function evaluatePixel(samples) {
  // Precompute an array to contain B05 observations
  var n_observations = samples.length;
  let band_05 = new Array(n_observations).fill(0);
  
  // Fill the array
  samples.forEach((sample, index) => {
    band_05[index] = sample.B05;
  });
                     
  return band_05;
}