Page Summary
-
The
Array.atan()method computes the arctangent in radians for each element of an input array. -
This method takes an Array as input and returns an Array as output.
-
Examples are provided in both JavaScript and Python demonstrating the usage and plotting of the
atan()function.
| Usage | Returns |
|---|---|
Array.
atan
()
|
Array |
| Argument | Type | Details |
|---|---|---|
|
this:
input
|
Array | The input array. |
Examples
Code Editor (JavaScript)
print ( ee . Array ([ - 5 ]). atan ()); // [-1.3734] print ( ee . Array ([ 0 ]). atan ()); // [0] print ( ee . Array ([ 5 ]). atan ()); // [1.3734] var start = - 5 ; var end = 5 ; var points = ee . Array ( ee . List . sequence ( start , end , null , 50 )); var values = points . atan (); // Plot atan() defined above. var chart = ui . Chart . array . values ( values , 0 , points ) . setOptions ({ viewWindow : { min : start , max : end }, hAxis : { title : 'x' , viewWindowMode : 'maximized' , ticks : [ { v : start , f : start }, { v : 0 , f : 0 }, { v : end , f : end }] }, vAxis : { title : 'atan(x)' , ticks : [ { v : - Math . PI / 2 , f : '-π/2' }, { v : 0 , f : 0 }, { v : Math . PI / 2 , f : 'π/2' }] }, lineWidth : 1 , pointSize : 0 , }); print ( chart );
import ee import geemap.core as geemap
Colab (Python)
import math import altair as alt import pandas as pd display ( ee . Array ([ - 5 ]) . atan ()) # [-1.3734] display ( ee . Array ([ 0 ]) . atan ()) # [0] display ( ee . Array ([ 5 ]) . atan ()) # [1.3734] start = - 5 end = 5 points = ee . Array ( ee . List . sequence ( start , end , None , 50 )) values = points . atan () df = pd . DataFrame ({ 'x' : points . getInfo (), 'atan(x)' : values . getInfo ()}) # Plot atan() defined above. alt . Chart ( df ) . mark_line () . encode ( x = alt . X ( 'x' , axis = alt . Axis ( values = [ start , 0 , end ])), y = alt . Y ( 'atan(x)' , axis = alt . Axis ( values = [ - math . pi / 2 , 0 , math . pi / 2 ])) )
