ee.Number.atan

    • The Number.atan() method computes the arctangent in radians of a numeric input.

    • The method returns a Number type.

    • The input value must also be a Number type.

     Computes the arctangent in radians of the input.
    Usage Returns
    Number. atan () Number
    Argument Type Details
    this: input
    		Number The input value.

    Examples

    Code Editor (JavaScript) 

     print 
 ( 
 'Arctangent of -1e13' 
 , 
  
 ee 
 . 
 Number 
 ( 
 - 
 1e13 
 ). 
 atan 
 ()); 
  
 // -1.570796326 (-π/2) 
 print 
 ( 
 'Arctangent of -1' 
 , 
  
 ee 
 . 
 Number 
 ( 
 - 
 1 
 ). 
 atan 
 ()); 
  
 // -0.785398163 
 print 
 ( 
 'Arctangent of 0' 
 , 
  
 ee 
 . 
 Number 
 ( 
 0 
 ). 
 atan 
 ()); 
  
 // 0 
 print 
 ( 
 'Arctangent of 1' 
 , 
  
 ee 
 . 
 Number 
 ( 
 1 
 ). 
 atan 
 ()); 
  
 // 0.785398163 
 print 
 ( 
 'Arctangent of 1e13' 
 , 
  
 ee 
 . 
 Number 
 ( 
 1e13 
 ). 
 atan 
 ()); 
  
 // 1.570796326 (π/2)

    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) 

     # -1.570796326 (-π/2) 
 display 
 ( 
 'Arctangent of -1e13:' 
 , 
 ee 
 . 
 Number 
 ( 
 - 
 1e13 
 ) 
 . 
 atan 
 ()) 
 display 
 ( 
 'Arctangent of -1:' 
 , 
 ee 
 . 
 Number 
 ( 
 - 
 1 
 ) 
 . 
 atan 
 ()) 
 # -0.785398163 
 display 
 ( 
 'Arctangent of 0:' 
 , 
 ee 
 . 
 Number 
 ( 
 0 
 ) 
 . 
 atan 
 ()) 
 # 0 
 display 
 ( 
 'Arctangent of 1:' 
 , 
 ee 
 . 
 Number 
 ( 
 1 
 ) 
 . 
 atan 
 ()) 
 # 0.785398163 
 # 1.570796326 (π/2) 
 display 
 ( 
 'Arctangent of 1e13:' 
 , 
 ee 
 . 
 Number 
 ( 
 1e13 
 ) 
 . 
 atan 
 ())
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