Page Summary
-
Array.firstNonZero(right)is a method that returns an Array. -
This method selects the first value on an element-wise basis if it is non-zero and the second value otherwise.
-
It takes two Array arguments:
left(the left-hand value) andright(the right-hand value).
| Usage | Returns |
|---|---|
Array.
firstNonZero
(right)
|
Array |
| Argument | Type | Details |
|---|---|---|
|
this:
left
|
Array | The left-hand value. |
right
|
Array | The right-hand value. |
Examples
Code Editor (JavaScript)
var empty = ee . Array ([], ee . PixelType . int8 ()); print ( empty . firstNonZero ( empty )); // [] print ( ee . Array ([ 0 ]). firstNonZero ( 0 )); // [0] print ( ee . Array ([ 0 ]). firstNonZero ([ 0 ])); // [0] print ( ee . Array ([ 0 ]). firstNonZero ([ 1 ])); // [1] print ( ee . Array ([ 2 ]). firstNonZero ([ 3 ])); // [2] print ( ee . Array ([ 1 ]). firstNonZero ([ 0 ])); // [1] print ( ee . Array ([ - 1 , 0 , 1 ]). firstNonZero ([ 2 , - 1 , 2 ])); // [-1,-1,1] // [[1,2],[3,4]] print ( ee . Array ([[ 1 , 2 ], [ 0 , 0 ]]). firstNonZero ([[ 0 , 0 ], [ 3 , 4 ]]));
import ee import geemap.core as geemap
Colab (Python)
empty = ee . Array ([], ee . PixelType . int8 ()) display ( empty . firstNonZero ( empty )) # [] display ( ee . Array ([ 0 ]) . firstNonZero ( 0 )) # [0] display ( ee . Array ([ 0 ]) . firstNonZero ([ 0 ])) # [0] display ( ee . Array ([ 0 ]) . firstNonZero ([ 1 ])) # [1] display ( ee . Array ([ 2 ]) . firstNonZero ([ 3 ])) # [2] display ( ee . Array ([ 1 ]) . firstNonZero ([ 0 ])) # [1] display ( ee . Array ([ - 1 , 0 , 1 ]) . firstNonZero ([ 2 , - 1 , 2 ])) # [-1, -1, 1] # [[1, 2], [3, 4]] display ( ee . Array ([[ 1 , 2 ], [ 0 , 0 ]]) . firstNonZero ([[ 0 , 0 ], [ 3 , 4 ]]))
