Global Water Bodies visualisation script

//VERSION=3

// This custom script visualises water bodies derived from water bodies detection layer (WB )

//set up the input and output settings.
function setup() {
  return {
    input: ["WB", "dataMask"],
    output: { 
      bands: 4, 
      sampleType: "AUTO"
    }
  }
}

// evaluatePixel function
function evaluatePixel(sample) {
  if (sample.WB == 70) return[0,0,1,1]; // blue
  else return [0,0,0,0] // transparent
}

General description of the script

This script visualizes surface water bodies extent derived from water Bodies detection layer (WB) contained in Water Bodies data.

Table 1: Color legend for the water bodies

Description of representative images

October 2020 monthly composite map showing surface water bodies extent around Russia’s largest freshawater Baikal lake visualised in EO browser

Resources

• Data Source

• Entry in public collections