CLMS HR-S&I: Sentinel-1 River and Lake Ice Extent quality layer visualisation script
//VERSION=3
function setup() {
return {
input: ["QC", "dataMask"],
output: {
bands: 4,
sampleType: "Auto"
}
};
}
const map = [
[0, 0x5DA400], //0 - High quality
[1, 0xBDBD5B], //1 - Medium quality
[2, 0xFFC000], //2 - Low quality
[3, 0xFF0000], //3 - Minimal quality
[255, 0xFFFFFF], //255 - No data
];
const visualizer = new ColorMapVisualizer(map);
function evaluatePixel(sample) {
let rgbVis = visualizer.process(sample.QC);
return rgbVis.concat(sample.dataMask);
}General description of the script
This script visualises the Sentinel 1-based River and Lake Ice Extent quality layer.
Table 1: Classification classes and colouring scheme.
| Value | Color | Label |
|---|---|---|
| 0 | high quality | |
| 1 | medium quality | |
| 2 | low quality | |
| 3 | minimal quality | |
| 255 | no data |
Description of representative images
20th September 2022, Hamburg, DE
