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I did some calculations on variety of image collections and have generated products and saved them in variables, say a, b and c. Now I want to combine all these products (All one bands) into a multiband image collection.
What function should i use? I tried with:
a.combine(b).combine(c)
a.merge(b).merge(c)
a.add(b).add(c)
But, these functions are not working.
Assuming you made a unique name for each band, and that you want to obtain one image with 3 bands (one for a, one for b and one for c) you have to addBands, like this:
var a = ee.Image(1).rename('one') // product one
var b = ee.Image(2).rename('two')
var c = ee.Image(3).rename('three')
var final = a.addBands([b, c])
link: https://code.earthengine.google.com/5c3ceef589fc8cbe6036f8f2ef22f2ca
combine function is what you need, but you are trying to combine collections that have images with different IDs, and if you see combine documentation it says that combines by ID, so when applying a join it doesn't find a match. If you want to join by date, you have to make the process yourself (join first and then add bands)
Apr 23, 2019 at 11:42