Removing clouds from Sentinel2 image collection in Google Earth Engine

Question

I am trying to apply a cloud cover to exclude clouds values from my graphs, using a Sentinel-2 image collection. I know ho to apply to a single image, but if I put an image collection instead of a single image I get this error:

masked: Layer error: Image.select, argument 'input': Invalid type. Expected type: Image. Actual type: ImageCollection.

This is the code:

// Define a location:
var point = ee.Geometry.Point([1.15529,47.034695]); //[Latitude,Longitude]
Map.addLayer(point)

// Load image Collection:
var imageCollection = ee.ImageCollection("COPERNICUS/S2_SR").filterDate('2017-01-01','2017-12-31');
var imageCollection = imageCollection.filterBounds(point);

print(imageCollection)

var cld = require('users/fitoprincipe/geetools:cloud_masks')


Map.addLayer(imageCollection, {bands:['B4', 'B3', 'B2'], min:0, max:5000}, 'test image')

var masked = cld.sclMask(['cloud_low', 'cloud_medium', 'cloud_high', 'shadow'])(imageCollection)
Map.addLayer(masked, {bands:['B4', 'B3', 'B2'], min:0, max:5000}, 'masked')

How can I fix this?

Answer 1

You need to call the specific function and iterate over the image collection using .map() function:

var cloud_masks = require('users/fitoprincipe/geetools:cloud_masks');

var sentinel2function = cloud_masks.sentinel2();

var col = imageCollection.map(sentinel2function);

Map.addLayer(imageCollection, {bands:['B4', 'B3', 'B2'], min:0, max:5000}, 'test image');
Map.addLayer(col, {bands:['B4', 'B3', 'B2'], min:0, max:5000}, 'test image masked');