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ee.Array.argmax

Page Summary

The argmax() function returns the position of the maximum value in an array as a list of indices.
If the array is empty, argmax() returns null.
If there are multiple occurrences of the maximum value, argmax() returns the position of the first occurrence.

Returns the position, as a list of indices in each array axis, of the maximum value in an array, or null if the array is empty. If there are multiple occurrences of the maximum, returns the position of the first.

Usage	Returns
`Array. argmax ()`	List

Argument	Type	Details
this: `array`	Array

Examples

Code Editor (JavaScript)

 // Return the position of the maximum value in each dimension. 
 // Returns null if the array is empty. 
 print 
 ( 
 ee 
 . 
 Array 
 ([], 
  
 ee 
 . 
 PixelType 
 . 
 int8 
 ()). 
 argmax 
 ()); 
  
 // null 
 print 
 ( 
 ee 
 . 
 Array 
 ([ 
 9 
 ]). 
 argmax 
 ()); 
  
 // [0] 
 print 
 ( 
 ee 
 . 
 Array 
 ([ 
 0 
 , 
  
 - 
 1 
 , 
  
 2 
 , 
  
 1 
 ]). 
 argmax 
 ()); 
  
 // [2] 
 print 
 ( 
 ee 
 . 
 Array 
 ([[ 
 3 
 , 
  
 4 
 , 
  
 2 
 ], 
  
 [ 
 6 
 , 
  
 5 
 , 
  
 7 
 ]]). 
 argmax 
 ()); 
  
 // [1, 2] 
 // Returns the first occurrence of the maximum. 
 print 
 ( 
 ee 
 . 
 Array 
 ([ 
 1 
 , 
  
 1 
 , 
  
 1 
 , 
  
 9 
 , 
  
 9 
 , 
  
 9 
 ]). 
 argmax 
 ()); 
  
 // [3]

Python setup

See the Python Environment page for information on the Python API and using geemap for interactive development.

 import 
  
 ee 
 import 
  
 geemap.core 
  
 as 
  
 geemap

Colab (Python)

 # Return the position of the maximum value in each dimension. 
 # Returns null if the array is empty. 
 display 
 ( 
 ee 
 . 
 Array 
 ([], 
 ee 
 . 
 PixelType 
 . 
 int8 
 ()) 
 . 
 argmax 
 ()) 
 # None 
 display 
 ( 
 ee 
 . 
 Array 
 ([ 
 9 
 ]) 
 . 
 argmax 
 ()) 
 # [0] 
 display 
 ( 
 ee 
 . 
 Array 
 ([ 
 0 
 , 
 - 
 1 
 , 
 2 
 , 
 1 
 ]) 
 . 
 argmax 
 ()) 
 # [2] 
 display 
 ( 
 ee 
 . 
 Array 
 ([[ 
 3 
 , 
 4 
 , 
 2 
 ], 
 [ 
 6 
 , 
 5 
 , 
 7 
 ]]) 
 . 
 argmax 
 ()) 
 # [1, 2] 
 # Returns the first occurrence of the maximum. 
 display 
 ( 
 ee 
 . 
 Array 
 ([ 
 1 
 , 
 1 
 , 
 1 
 , 
 9 
 , 
 9 
 , 
 9 
 ]) 
 . 
 argmax 
 ()) 
 # [3]

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Page Summary

Examples

Code Editor (JavaScript)

Colab (Python)

ee.Array.argmax