scripts/ndmi.js

//VERSION=3
const moistureRamps = [
    [-0.8, 0x800000],
    [-0.24, 0xff0000],
    [-0.032, 0xffff00],
    [0.032, 0x00ffff],
    [0.24, 0x0000ff],
    [0.8, 0x000080]
 ];
 
 const viz = new ColorRampVisualizer(moistureRamps);
 
 function setup() {
    return {
       input: ["B8A", "B11", "dataMask"],
       output: { bands: 4 }
    };
 }
 
 function evaluatePixel(samples) {
    let val = index(samples.B8A, samples.B11);
    let imgVals = viz.process(val);
    return imgVals.concat(samples.dataMask);
 }