var ookla_5g_map = ee.FeatureCollection("projects/sat-io/open-datasets/network/ookla_5g_map");
var operatorCounts = ookla_5g_map.aggregate_histogram('operator');
print('Operator Counts:', operatorCounts);

var ookla_updated = ookla_5g_map.map(function(feature) {
  // 获取当前特征的操作符
  var operator = feature.getString('operator');
  
  // 从直方图中获取该算子的计数
  var count = operatorCounts.get(operator);
  
  // 将计数作为新属性添加到特征中
  return feature.set('operator_count', count);
});

// 打印更新的功能集合
print('Updated Feature Collection:', ookla_updated.limit(10));

Map.centerObject(ookla_5g_map.first(),5)

//缓冲区至 10 米
function pt_buffer(feature){
  var ft = feature.buffer(10)
  return ft
}

var empty = ee.Image().byte();
var outline = empty.paint({
  featureCollection: ookla_updated.map(pt_buffer),
  color: 'operator_count',
  width: 4
});

Map.addLayer(ookla_updated,{},'Ookla 5G Map',false)
Map.addLayer(outline.randomVisualizer(), {opacity:0.8}, '5G Service operations')