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ee.Array.tan
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Calcola la tangente dell'input in radianti in base agli elementi.
Utilizzo | Resi |
---|
Array.tan() | Array |
Argomento | Tipo | Dettagli |
---|
questo: input | Array | L'array di input. |
Esempi
Editor di codice (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);
Configurazione di Python
Consulta la pagina
Ambiente Python per informazioni sull'API Python e sull'utilizzo di
geemap
per lo sviluppo interattivo.
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)]))
)
Salvo quando diversamente specificato, i contenuti di questa pagina sono concessi in base alla licenza Creative Commons Attribution 4.0, mentre gli esempi di codice sono concessi in base alla licenza Apache 2.0. Per ulteriori dettagli, consulta le norme del sito di Google Developers. Java è un marchio registrato di Oracle e/o delle sue consociate.
Ultimo aggiornamento 2025-07-26 UTC.
[null,null,["Ultimo aggiornamento 2025-07-26 UTC."],[[["\u003cp\u003e\u003ccode\u003eArray.tan()\u003c/code\u003e calculates the tangent of each element in an input array, with the input values expected to be in radians.\u003c/p\u003e\n"],["\u003cp\u003eThe function returns a new array containing the calculated tangent values for each corresponding element of the input array.\u003c/p\u003e\n"],["\u003cp\u003eUsage examples are provided in JavaScript, Python, and Colab, demonstrating how to apply \u003ccode\u003eArray.tan()\u003c/code\u003e and visualize the results.\u003c/p\u003e\n"]]],["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"],null,["# ee.Array.tan\n\nOn an element-wise basis, computes the tangent of the input in radians.\n\n\u003cbr /\u003e\n\n| Usage | Returns |\n|---------------|---------|\n| Array.tan`()` | Array |\n\n| Argument | Type | Details |\n|---------------|-------|------------------|\n| this: `input` | Array | The input array. |\n\nExamples\n--------\n\n### Code Editor (JavaScript)\n\n```javascript\nvar π = Math.PI;\nprint(ee.Array([-π / 4]).tan()); // [Almost -1]\nprint(ee.Array([0]).tan()); // [0]\nprint(ee.Array([π / 4]).tan()); // [Almost 1]\n\nvar start = -π / 3;\nvar end = π / 3;\nvar points = ee.Array(ee.List.sequence(start, end, null, 50));\nvar values = points.tan();\n\n// Plot tan() defined above.\nvar chart = ui.Chart.array.values(values, 0, points)\n .setOptions({\n viewWindow: {min: start, max: end},\n hAxis: {\n title: 'x',\n viewWindowMode: 'maximized',\n ticks: [\n {v: start, f: '-π / 3'},\n {v: 0, f: 0},\n {v: end, f: 'π / 3'}]\n },\n vAxis: {\n title: 'tan(x)',\n ticks: [\n {v: -Math.sqrt(3), f: '-√3'},\n {v: 0},\n {v: Math.sqrt(3), f: '√3'}]\n },\n lineWidth: 1,\n pointSize: 0,\n });\nprint(chart);\n```\nPython setup\n\nSee the [Python Environment](/earth-engine/guides/python_install) page for information on the Python API and using\n`geemap` for interactive development. \n\n```python\nimport ee\nimport geemap.core as geemap\n```\n\n### Colab (Python)\n\n```python\nimport math\nimport altair as alt\nimport pandas as pd\n\nπ = math.pi\ndisplay(ee.Array([-π / 4]).tan()) # [Almost -1]\ndisplay(ee.Array([0]).tan()) # [0]\ndisplay(ee.Array([π / 4]).tan()) # [Almost 1]\n\nstart = -π / 3\nend = π / 3\npoints = ee.Array(ee.List.sequence(start, end, None, 50))\nvalues = points.tan()\n\ndf = pd.DataFrame({'x': points.getInfo(), 'tan(x)': values.getInfo()})\n\n# Plot tan() defined above.\nalt.Chart(df).mark_line().encode(\n x=alt.X('x', axis=alt.Axis(values=[start, 0, end])),\n y=alt.Y('tan(x)', axis=alt.Axis(values=[-math.sqrt(3), 0, math.sqrt(3)]))\n)\n```"]]