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Combining multiple bands from different image collection into one collection

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1

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.

google-earth-engine

share|improve this question

edited 2 days ago

PolyGeo♦

54k1782246

asked 2 days ago

RamlaRamla

242

New contributor

Ramla is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

add a comment | 

1

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.

google-earth-engine

share|improve this question

edited 2 days ago

PolyGeo♦

54k1782246

asked 2 days ago

RamlaRamla

242

New contributor

Ramla is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

add a comment | 

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.

google-earth-engine

share|improve this question

edited 2 days ago

PolyGeo♦

54k1782246

asked 2 days ago

RamlaRamla

242

New contributor

Ramla is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

a.combine(b).combine(c)
a.merge(b).merge(c)
a.add(b).add(c)

share|improve this question

edited 2 days ago

PolyGeo♦

54k1782246

asked 2 days ago

RamlaRamla

242

New contributor

Ramla is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

share|improve this question

edited 2 days ago

PolyGeo♦

54k1782246

asked 2 days ago

RamlaRamla

242

New contributor

Ramla is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

edited 2 days ago

PolyGeo♦

54k1782246

edited 2 days ago

PolyGeo♦

54k1782246

asked 2 days ago

RamlaRamla

242

New contributor

Ramla is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

asked 2 days ago

RamlaRamla

242

1 Answer
1

active

oldest

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3

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

share|improve this answer

answered 2 days ago

Rodrigo E. PrincipeRodrigo E. Principe

4,54111021

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I tried with this one already. It works on single images, but not on image collections.
  
  – Ramla
  yesterday
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  The combine function works for three bands, but combining more then 3 prompts the error of empty ImageCollection
  
  – Ramla
  yesterday
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  You should show your code and error message, at least a link to the code editor
  
  – Rodrigo E. Principe
  yesterday
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  code.earthengine.google.com/1060f78574bd1d88c437f2b54ec5c36a
  
  – Ramla
  yesterday
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  This is why you must post all the code (or a code that can reproduce the error) when you make the question.. 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)
  
  – Rodrigo E. Principe
  yesterday
  

  
  
  
  

 | 
show 1 more comment

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3

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

share|improve this answer

answered 2 days ago

Rodrigo E. PrincipeRodrigo E. Principe

4,54111021

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I tried with this one already. It works on single images, but not on image collections.
  
  – Ramla
  yesterday
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  The combine function works for three bands, but combining more then 3 prompts the error of empty ImageCollection
  
  – Ramla
  yesterday
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  You should show your code and error message, at least a link to the code editor
  
  – Rodrigo E. Principe
  yesterday
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  code.earthengine.google.com/1060f78574bd1d88c437f2b54ec5c36a
  
  – Ramla
  yesterday
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  This is why you must post all the code (or a code that can reproduce the error) when you make the question.. 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)
  
  – Rodrigo E. Principe
  yesterday
  

  
  
  
  

 | 
show 1 more comment

3

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

share|improve this answer

answered 2 days ago

Rodrigo E. PrincipeRodrigo E. Principe

4,54111021

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I tried with this one already. It works on single images, but not on image collections.
  
  – Ramla
  yesterday
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  The combine function works for three bands, but combining more then 3 prompts the error of empty ImageCollection
  
  – Ramla
  yesterday
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  You should show your code and error message, at least a link to the code editor
  
  – Rodrigo E. Principe
  yesterday
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  code.earthengine.google.com/1060f78574bd1d88c437f2b54ec5c36a
  
  – Ramla
  yesterday
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  This is why you must post all the code (or a code that can reproduce the error) when you make the question.. 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)
  
  – Rodrigo E. Principe
  yesterday
  

  
  
  
  

 | 
show 1 more comment

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

share|improve this answer

answered 2 days ago

Rodrigo E. PrincipeRodrigo E. Principe

4,54111021

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])

share|improve this answer

answered 2 days ago

Rodrigo E. PrincipeRodrigo E. Principe

4,54111021

answered 2 days ago

Rodrigo E. PrincipeRodrigo E. Principe

4,54111021

answered 2 days ago

Rodrigo E. PrincipeRodrigo E. Principe

4,54111021