Creates an image from a feature collection by applying a reducer over the selected properties of all the features that intersect each pixel.
ImageCollection.reduceToImage(properties, reducer)Image
this: collectionFeatureCollectionFeature collection to intersect with each output pixel.
propertiesListProperties to select from each feature and pass into the reducer.
reducerReducerA Reducer to combine the properties of each intersecting feature into a final result to store in the pixel.


Code Editor (JavaScript)

var col = ee.ImageCollection('LANDSAT/LC08/C02/T1_TOA')
  .filterBounds(ee.Geometry.BBox(-124.0, 43.2, -116.5, 46.3))
  .filterDate('2021', '2022');

// Image visualization settings.
var visParams = {
  bands: ['B4', 'B3', 'B2'],
  min: 0.01,
  max: 0.25
Map.addLayer(col.mean(), visParams, 'RGB mean');

// Reduce the geometry (footprint) of images in the collection to an image.
// Image property values are applied to the pixels intersecting each
// image's geometry and then a per-pixel reduction is performed according
// to the selected reducer. Here, the image cloud cover property is assigned
// to the pixels intersecting image geometry and then reduced to a single
// image representing the per-pixel mean image cloud cover.
var meanCloudCover = col.reduceToImage({
  properties: ['CLOUD_COVER'],
  reducer: ee.Reducer.mean()

Map.setCenter(-119.87, 44.76, 6);
Map.addLayer(meanCloudCover, {min: 0, max: 50}, 'Cloud cover mean');