ee.Array.tan
On an element-wise basis, computes the tangent of the input in radians.
Usage | Returns |
---|
Array.tan() | Array |
Argument | Type | Details |
---|
this: input | Array | The input array. |
Examples
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);
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
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)]))
)
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Last updated 2023-10-06 UTC.
[null,null,["Last updated 2023-10-06 UTC."],[[["`Array.tan()` calculates the tangent of each element in an input array, with the input values expected to be in radians."],["The function returns a new array containing the calculated tangent values for each corresponding element of the input array."],["Usage examples are provided in JavaScript, Python, and Colab, demonstrating how to apply `Array.tan()` and visualize the results."]]],["The `Array.tan()` function computes the tangent of an input array element-wise, with values in radians. The function takes an array as input and returns a new array containing the tangent of each element. Examples demonstrate the use of `tan()` with different inputs, including `-π/4`, `0`, and `π/4`. Additionally, the examples illustrate how to generate a range of values and visualize the tangent function using a chart.\n"]]