Page Summary
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Array.tan() computes the tangent of each element in an input Array, returning an Array.
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The function takes one argument: the input Array.
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Examples demonstrate the usage in JavaScript and Python, including plotting the tangent function.
| Usage | Returns |
|---|---|
Array.
tan
()
|
Array |
| Argument | Type | Details |
|---|---|---|
|
this:
input
|
Array | The input array. |
Examples
Code Editor (JavaScript)
var π = Math . PI ; print ( ee . Array ([ - π / 4 ]). tan ()); // [Almost -1] print ( ee . Array ([ 0 ]). tan ()); // [0] print ( ee . Array ([ π / 4 ]). tan ()); // [Almost 1] var start = - π / 3 ; var end = π / 3 ; var points = ee . Array ( ee . List . sequence ( start , end , null , 50 )); var values = points . tan (); // Plot tan() 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 : '-π / 3' }, { v : 0 , f : 0 }, { v : end , f : 'π / 3' }] }, vAxis : { title : 'tan(x)' , ticks : [ { v : - Math . sqrt ( 3 ), f : '-√3' }, { v : 0 }, { v : Math . sqrt ( 3 ), f : '√3' }] }, 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 π = math . pi display ( ee . Array ([ - π / 4 ]) . tan ()) # [Almost -1] display ( ee . Array ([ 0 ]) . tan ()) # [0] display ( ee . Array ([ π / 4 ]) . tan ()) # [Almost 1] start = - π / 3 end = π / 3 points = ee . Array ( ee . List . sequence ( start , end , None , 50 )) values = points . tan () df = pd . DataFrame ({ 'x' : points . getInfo (), 'tan(x)' : values . getInfo ()}) # Plot tan() defined above. alt . Chart ( df ) . mark_line () . encode ( x = alt . X ( 'x' , axis = alt . Axis ( values = [ start , 0 , end ])), y = alt . Y ( 'tan(x)' , axis = alt . Axis ( values = [ - math . sqrt ( 3 ), 0 , math . sqrt ( 3 )])) )
