I want make Supervised Classification for all images in imagecollection. I make one image with all bands, but i can't make classification, console give error:

merged.sampleRegions is not a function

Maybe there's another way how to convert image collection to image with bands or what am I doing wrong ?

//there's my imagecollection with param
var imgcollection = ee.ImageCollection('COPERNICUS/S2')
  .filterDate('2017-01-05', '2018-01-05')
  .filter(ee.Filter.lt('CLOUD_COVERAGE_ASSESSMENT', 20));

//there's i make function which convert imagecollection to one image with bands
var mergeBands = function(image, previous) {
  return ee.Image(previous).addBands(image, ['B8', 'B4', 'B3','B2']);
//there i get one images with bands:8,4,3,2
var merged = imgcollection.iterate(mergeBands, ee.Image([]));

var newft = ee.FeatureCollection('ft:1k5OiHRqWMQ61dDqzVFVadbEB9T4DWp0_ppYPAl7X');

//there's i trying to classificate
var training = merged.sampleRegions({
  collection: newft,
  properties: ['Number'],
  scale: 30,
  • 1
    try casting merged: var merged = ee.Image(imgcollection.iterate(mergeBands, ee.Image([]))); Commented Jul 12, 2019 at 14:24


Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Browse other questions tagged or ask your own question.