script.js

//VERSION=3

// This scripts visualise land cover over Metropolitan France

// Set up input and output settings
function setup() {
    return {
      input: [{
        bands: [
          "OCS"
        ]
      }],
      output: {
        bands: 4
      }
    }
  }

//EvaluatePixel function - return corresponding color based on CNES Land Cover nomenclature and colouring scheme
function evaluatePixel(samples) {
    const val = samples.OCS;
    if (val == 1) {
        return [1, 0, 1, 1];
    } else if (val == 2) {
        return [1, 85/255, 1, 1];
    } else if (val == 3) {
        return [1, 170/255, 1, 1];
    } else if (val == 4) {
        return [0, 1, 1, 1];
    } else if (val == 5) {
        return [1, 1, 0, 1];
    } else if (val == 6) {
        return [208/255, 1, 0, 1];
    } else if (val == 7) {
        return [161/255, 214/255, 0, 1];
    } else if (val == 8) {
        return [1, 171/255, 68/255, 1];
    } else if (val == 9) {
        return [214/255, 214/255, 0, 1];
    } else if (val == 10) {
        return [1, 85/255, 0, 1];
    } else if (val == 11) {
        return [197/255, 1, 1, 1];
    } else if (val == 12) {
        return [170/255, 170/255, 97/255, 1];
    } else if (val == 13) {
        return [170/255, 170/255, 0, 1, 1];
    } else if (val == 14) {
        return [170/255, 170/255, 1, 1];
    } else if (val == 15) {
        return [85/255, 0, 0, 1];
    } else if (val == 16) {
        return [0, 156/255, 0, 1];
    } else if (val == 17) {
        return [0, 50/255, 0, 1];
    } else if (val == 18) {
        return [170/255, 250/255, 0, 1];
    } else if (val == 19) {
        return [85/255, 170/255, 127/255, 1];
    } else if (val == 20) {
        return [1, 0, 0, 1];
    } else if (val == 21) {
        return [1, 184/255, 2/255, 1];
    } else if (val == 22) {
        return [190/255, 190/255, 190/255, 1];
    } else if (val == 23) {
        return [0, 0, 1, 1];
    } else if (val == 0 || val == 255) {
        return [1, 1, 1, 0];
    } else {
        return [0, 0, 0, 1];
    }
  }