Code Editor (JavaScript)
// A land cover image.
var img = ee.Image('ESA/WorldCover/v100/2020');
// A list of pixel values to replace.
var fromList = [10, 20, 30, 40, 50, 60, 70, 80, 90, 95, 100];
// A corresponding list of replacement values (10 becomes 1, 20 becomes 2, etc).
var toList = [ 1, 2, 2, 2, 3, 2, 4, 5, 6, 6, 2];
// Replace pixel values in the image. If the image is multi-band, only the
// remapped band will be returned. The returned band name is "remapped".
// Input image properties are retained in the output image.
var imgRemap = img.remap({
from: fromList,
to: toList,
defaultValue: 0,
bandName: 'Map'
});
// Display the original and remapped images. Note that similar land cover
// classes in the original image are grouped into aggregate classes by
// from → to value mapping.
Map.addLayer(img, null, 'Original image');
Map.addLayer(imgRemap, {
min: 1, max: 6,
palette:'darkgreen, lightgreen, red, white, blue, lightblue'
}, 'Remapped image');