ee.Image.pow

    • This method raises the first image's bands to the power of the second image's bands for each matched pair.

    • If one image has a single band, it will be applied to all bands of the other image.

    • If both images have the same number of bands but different names, bands are paired by their order.

    • Output bands are named based on the longer input image or the first image if lengths are equal, and output pixels are of float type.

     Raises the first value to the power of the second for each matched pair of bands in image1 and image2. If either image1 or image2 has only 1 band, then it is used against all the bands in the other image. If the images have the same number of bands, but not the same names, they're used pairwise in the natural order. The output bands are named for the longer of the two inputs, or if they're equal in length, in image1's order. The type of the output pixels is float.
    Usage Returns
    Image. pow (image2) Image
    Argument Type Details
    this: image1
    		Image The image from which the left operand bands are taken.
    image2
    		Image The image from which the right operand bands are taken.

    Examples

    Code Editor (JavaScript) 

     // A Sentinel-2 surface reflectance image. 
 var 
  
 img 
  
 = 
  
 ee 
 . 
 Image 
 ( 
 'COPERNICUS/S2_SR/20210109T185751_20210109T185931_T10SEG' 
 ); 
 // Subset two image bands and display them on the map. 
 var 
  
 swir1 
  
 = 
  
 img 
 . 
 select 
 ( 
 'B11' 
 ); 
 var 
  
 swir2 
  
 = 
  
 img 
 . 
 select 
 ( 
 'B12' 
 ); 
 Map 
 . 
 setCenter 
 ( 
 - 
 122.276 
 , 
  
 37.456 
 , 
  
 12 
 ); 
 Map 
 . 
 addLayer 
 ( 
 swir1 
 , 
  
 { 
 min 
 : 
  
 0 
 , 
  
 max 
 : 
  
 3000 
 }, 
  
 'swir1' 
 ); 
 Map 
 . 
 addLayer 
 ( 
 swir2 
 , 
  
 { 
 min 
 : 
  
 0 
 , 
  
 max 
 : 
  
 3000 
 }, 
  
 'swir2' 
 ); 
 // The following examples demonstrate ee.Image arithmetic methods using two 
 // single-band ee.Image inputs. 
 var 
  
 addition 
  
 = 
  
 swir1 
 . 
 add 
 ( 
 swir2 
 ); 
 Map 
 . 
 addLayer 
 ( 
 addition 
 , 
  
 { 
 min 
 : 
  
 100 
 , 
  
 max 
 : 
  
 6000 
 }, 
  
 'addition' 
 ); 
 var 
  
 subtraction 
  
 = 
  
 swir1 
 . 
 subtract 
 ( 
 swir2 
 ); 
 Map 
 . 
 addLayer 
 ( 
 subtraction 
 , 
  
 { 
 min 
 : 
  
 0 
 , 
  
 max 
 : 
  
 1500 
 }, 
  
 'subtraction' 
 ); 
 var 
  
 multiplication 
  
 = 
  
 swir1 
 . 
 multiply 
 ( 
 swir2 
 ); 
 Map 
 . 
 addLayer 
 ( 
 multiplication 
 , 
  
 { 
 min 
 : 
  
 1.9e5 
 , 
  
 max 
 : 
  
 9.4e6 
 }, 
  
 'multiplication' 
 ); 
 var 
  
 division 
  
 = 
  
 swir1 
 . 
 divide 
 ( 
 swir2 
 ); 
 Map 
 . 
 addLayer 
 ( 
 division 
 , 
  
 { 
 min 
 : 
  
 0 
 , 
  
 max 
 : 
  
 3 
 }, 
  
 'division' 
 ); 
 var 
  
 remainder 
  
 = 
  
 swir1 
 . 
 mod 
 ( 
 swir2 
 ); 
 Map 
 . 
 addLayer 
 ( 
 remainder 
 , 
  
 { 
 min 
 : 
  
 0 
 , 
  
 max 
 : 
  
 1500 
 }, 
  
 'remainder' 
 ); 
 // If a number input is provided as the second argument, it will automatically 
 // be promoted to an ee.Image object, a convenient shorthand for constants. 
 var 
  
 exponent 
  
 = 
  
 swir1 
 . 
 pow 
 ( 
 3 
 ); 
 Map 
 . 
 addLayer 
 ( 
 exponent 
 , 
  
 { 
 min 
 : 
  
 0 
 , 
  
 max 
 : 
  
 2e10 
 }, 
  
 'exponent' 
 );

    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) 

     # A Sentinel-2 surface reflectance image. 
 img 
 = 
 ee 
 . 
 Image 
 ( 
 'COPERNICUS/S2_SR/20210109T185751_20210109T185931_T10SEG' 
 ) 
 # Subset two image bands and display them on the map. 
 swir_1 
 = 
 img 
 . 
 select 
 ( 
 'B11' 
 ) 
 swir_2 
 = 
 img 
 . 
 select 
 ( 
 'B12' 
 ) 
 m 
 = 
 geemap 
 . 
 Map 
 () 
 m 
 . 
 set_center 
 ( 
 - 
 122.276 
 , 
 37.456 
 , 
 12 
 ) 
 m 
 . 
 add_layer 
 ( 
 swir_1 
 , 
 { 
 'min' 
 : 
 0 
 , 
 'max' 
 : 
 3000 
 }, 
 'swir_1' 
 ) 
 m 
 . 
 add_layer 
 ( 
 swir_2 
 , 
 { 
 'min' 
 : 
 0 
 , 
 'max' 
 : 
 3000 
 }, 
 'swir_2' 
 ) 
 # The following examples demonstrate ee.Image arithmetic methods using two 
 # single-band ee.Image inputs. 
 addition 
 = 
 swir_1 
 . 
 add 
 ( 
 swir_2 
 ) 
 m 
 . 
 add_layer 
 ( 
 addition 
 , 
 { 
 'min' 
 : 
 100 
 , 
 'max' 
 : 
 6000 
 }, 
 'addition' 
 ) 
 subtraction 
 = 
 swir_1 
 . 
 subtract 
 ( 
 swir_2 
 ) 
 m 
 . 
 add_layer 
 ( 
 subtraction 
 , 
 { 
 'min' 
 : 
 0 
 , 
 'max' 
 : 
 1500 
 }, 
 'subtraction' 
 ) 
 multiplication 
 = 
 swir_1 
 . 
 multiply 
 ( 
 swir_2 
 ) 
 m 
 . 
 add_layer 
 ( 
 multiplication 
 , 
 { 
 'min' 
 : 
 1.9e5 
 , 
 'max' 
 : 
 9.4e6 
 }, 
 'multiplication' 
 ) 
 division 
 = 
 swir_1 
 . 
 divide 
 ( 
 swir_2 
 ) 
 m 
 . 
 add_layer 
 ( 
 division 
 , 
 { 
 'min' 
 : 
 0 
 , 
 'max' 
 : 
 3 
 }, 
 'division' 
 ) 
 remainder 
 = 
 swir_1 
 . 
 mod 
 ( 
 swir_2 
 ) 
 m 
 . 
 add_layer 
 ( 
 remainder 
 , 
 { 
 'min' 
 : 
 0 
 , 
 'max' 
 : 
 1500 
 }, 
 'remainder' 
 ) 
 # If a number input is provided as the second argument, it will automatically 
 # be promoted to an ee.Image object, a convenient shorthand for constants. 
 exponent 
 = 
 swir_1 
 . 
 pow 
 ( 
 3 
 ) 
 m 
 . 
 add_layer 
 ( 
 exponent 
 , 
 { 
 'min' 
 : 
 0 
 , 
 'max' 
 : 
 2e10 
 }, 
 'exponent' 
 ) 
 m
    Create a Mobile Website
    View Site in Mobile | Classic
    Share by: