script.js

//VERSION=3
//UDM2 Classification

function setup() {
  return {
    input: [{
      bands: [
        "B1",
        "B2",
        "B3",
        "UDM2_Clear",
        "UDM2_Snow",
        "UDM2_Shadow",
        "UDM2_LightHaze",
        "UDM2_HeavyHaze",
        "UDM2_Cloud"
      ]
    }],
    output: {
      bands: 4
    }
  }
}
  
function evaluatePixel(samples) {
  
  if (samples.UDM2_Snow == 1){
    return[0,0.5,1,1] // blue
  }
  if (samples.UDM2_Shadow == 1){
    return[0.4,0.4,0.4,1] //grey
  }
  if (samples.UDM2_LightHaze == 1){
    return[0,0.9,1,1] //sky blue 
  }
   if (samples.UDM2_HeavyHaze == 1){
    return[1,0.7,1,1] //light pink
  }
  if (samples.UDM2_Cloud == 1){
    return[0.7,0.7,0.7,1] //white
  }
  else{
    return[0,0,0,0]
  }
}