text: ////////
  ////////     Read ShapeFiles from asset directory
  ////////
  
  var double_LatLong_regions = ee.FeatureCollection(double_LatLong_SF);
  var double_weird_regions = ee.FeatureCollection(double_weird_SF);
  
  print(double_LatLong_regions)
  print(double_weird_regions)
  
  
  // print (typeof(double_weird_regions.size()))
  print ('double_LatLong_regions is \n of size: ', 
                           double_LatLong_regions.size())
  
  print ('double_weird_regions is \n of size: ', 
                                double_weird_regions.size())
  
  ////////
  ////////     Functions
  ////////
  
  var addNDVI = function(image) {
    var ndvi = image.normalizedDifference(['B8', 'B4']).rename('NDVI');
    return image.addBands(ndvi);
  };
  ////////
  ////////     Parameters we need
  ////////
  
  var needed_bands = ['B8', 'B4']
  
  var years = ['2019', '2018', '2017', '2016', 
               '2015', '2014', '2013', '2012']
  
  var year = years[1]
  
  var start_date = year.concat('-03-01')
  var end_date = year.concat('-10-01')
  
  print ('the chosen time window is\n from '.concat(year, 
          '-03-01\n to   ', year, '-10-01'))
  
  
  // var double_LatLong_Collection = ee.ImageCollection('COPERNICUS/S2')
  //     .filterDate( start_date, end_date )
  //     .filterBounds(fifty_double_field)
  //     .filterMetadata('CLOUDY_PIXEL_PERCENTAGE', "less_than", 0.5)
  //     .select(needed_bands);
  
  