ee.Image.arrayRepeat
קל לארגן דפים בעזרת אוספים
אפשר לשמור ולסווג תוכן על סמך ההעדפות שלך.
Repeats each array pixel along the given axis. לכל פיקסל בפלט יהיה הצורה של הפיקסל בקלט, חוץ מהאורך לאורך הציר החוזר, שיוכפל במספר העותקים.
שימוש | החזרות |
---|
Image.arrayRepeat(axis, copies) | תמונה |
ארגומנט | סוג | פרטים |
---|
זה: input | תמונה | תמונה של פיקסלים במערך שרוצים לחזור עליהם. |
axis | מספר שלם | הציר שלפיו חוזרים על המערך של כל פיקסל. |
copies | תמונה | מספר העותקים של כל פיקסל. |
דוגמאות
עורך הקוד (JavaScript)
// A function to print the array for a selected pixel in the following examples.
function sampArrImg(arrImg) {
var point = ee.Geometry.Point([-121, 42]);
return arrImg.sample(point, 500).first().get('array');
}
// Create a 1D array image.
var arrayImg1D = ee.Image([0, 1, 2]).toArray();
print('1D array image (pixel)', sampArrImg(arrayImg1D));
// [0, 1, 2]
// Repeat a 1D array along the 0-axis 3 times.
var repeat1DAx0 = arrayImg1D.arrayRepeat(0, 3);
print('1D array repeated 3 times on 0-axis', sampArrImg(repeat1DAx0));
// [0, 1, 2, 0, 1, 2, 0, 1, 2]
// Repeat a 1D array along the 1-axis 3 times (expands the dimensions).
var repeat1DAx1 = arrayImg1D.arrayRepeat(1, 3);
print('1D array repeated 3 times on 1-axis', sampArrImg(repeat1DAx1));
// [[0, 0, 0],
// [1, 1, 1],
// [2, 2, 2]]
// Repeat a 2D array along the 0-axis 2 times.
var repeat2DAx0 = repeat1DAx1.arrayRepeat(0, 2);
print('2D array repeated 2 times on 0-axis', sampArrImg(repeat2DAx0));
// [[0, 0, 0],
// [1, 1, 1],
// [2, 2, 2],
// [0, 0, 0],
// [1, 1, 1],
// [2, 2, 2]]
// Repeat a 2D array along the 1-axis 2 times.
var repeat2DAx1 = repeat1DAx1.arrayRepeat(1, 2);
print('2D array repeated 2 times on 1-axis', sampArrImg(repeat2DAx1));
// [[0, 0, 0, 0, 0, 0],
// [1, 1, 1, 1, 1, 1],
// [2, 2, 2, 2, 2, 2]]
הגדרת Python
מידע על Python API ועל שימוש ב-geemap
לפיתוח אינטראקטיבי מופיע בדף
Python Environment.
import ee
import geemap.core as geemap
Colab (Python)
# A function to print the array for a selected pixel in the following examples.
def samp_arr_img(arr_img):
point = ee.Geometry.Point([-121, 42])
return arr_img.sample(point, 500).first().get('array')
# Create a 1D array image.
array_img_1d = ee.Image([0, 1, 2]).toArray()
print('1D array image (pixel):', samp_arr_img(array_img_1d).getInfo())
# [0, 1, 2]
# Repeat a 1D array along the 0-axis 3 times.
repeat_1d_ax0 = array_img_1d.arrayRepeat(0, 3)
print(
'1D array repeated 3 times on 0-axis:',
samp_arr_img(repeat_1d_ax0).getInfo()
)
# [0, 1, 2, 0, 1, 2, 0, 1, 2]
# Repeat a 1D array along the 1-axis 3 times (expands the dimensions).
repeat_1d_ax1 = array_img_1d.arrayRepeat(1, 3)
print(
'1D array repeated 3 times on 1-axis:',
samp_arr_img(repeat_1d_ax1).getInfo()
)
# [[0, 0, 0],
# [1, 1, 1],
# [2, 2, 2]]
# Repeat a 2D array along the 0-axis 2 times.
repeat_2d_ax0 = repeat_1d_ax1.arrayRepeat(0, 2)
print(
'2D array repeated 2 times on 0-axis:',
samp_arr_img(repeat_2d_ax0).getInfo()
)
# [[0, 0, 0],
# [1, 1, 1],
# [2, 2, 2],
# [0, 0, 0],
# [1, 1, 1],
# [2, 2, 2]]
# Repeat a 2D array along the 1-axis 2 times.
repeat_2d_ax1 = repeat_1d_ax1.arrayRepeat(1, 2)
print(
'2D array repeated 2 times on 1-axis:',
samp_arr_img(repeat_2d_ax1).getInfo()
)
# [[0, 0, 0, 0, 0, 0],
# [1, 1, 1, 1, 1, 1],
# [2, 2, 2, 2, 2, 2]]
אלא אם צוין אחרת, התוכן של דף זה הוא ברישיון Creative Commons Attribution 4.0 ודוגמאות הקוד הן ברישיון Apache 2.0. לפרטים, ניתן לעיין במדיניות האתר Google Developers. Java הוא סימן מסחרי רשום של חברת Oracle ו/או של השותפים העצמאיים שלה.
עדכון אחרון: 2025-07-26 (שעון UTC).
[null,null,["עדכון אחרון: 2025-07-26 (שעון UTC)."],[[["\u003cp\u003e\u003ccode\u003eImage.arrayRepeat()\u003c/code\u003e duplicates each pixel's array along a specified axis, creating a new image.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eaxis\u003c/code\u003e parameter determines the dimension along which the repetition occurs (0 or 1 for 1D/2D arrays).\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003ecopies\u003c/code\u003e parameter specifies the number of times to repeat the array elements along the given axis.\u003c/p\u003e\n"],["\u003cp\u003eRepeating along an existing axis extends the array in that dimension, while repeating along a new axis adds a new dimension to the array.\u003c/p\u003e\n"],["\u003cp\u003eThis function is useful for expanding array images or creating patterned data within an image's array structure.\u003c/p\u003e\n"]]],[],null,["# ee.Image.arrayRepeat\n\nRepeats each array pixel along the given axis. Each output pixel will have the shape of the input pixel, except length along the repeated axis, which will be multiplied by the number of copies.\n\n\u003cbr /\u003e\n\n| Usage | Returns |\n|-----------------------------------|---------|\n| Image.arrayRepeat`(axis, copies)` | Image |\n\n| Argument | Type | Details |\n|---------------|---------|------------------------------------------------|\n| this: `input` | Image | Image of array pixels to be repeated. |\n| `axis` | Integer | Axis along which to repeat each pixel's array. |\n| `copies` | Image | Number of copies of each pixel. |\n\nExamples\n--------\n\n### Code Editor (JavaScript)\n\n```javascript\n// A function to print the array for a selected pixel in the following examples.\nfunction sampArrImg(arrImg) {\n var point = ee.Geometry.Point([-121, 42]);\n return arrImg.sample(point, 500).first().get('array');\n}\n\n// Create a 1D array image.\nvar arrayImg1D = ee.Image([0, 1, 2]).toArray();\nprint('1D array image (pixel)', sampArrImg(arrayImg1D));\n// [0, 1, 2]\n\n// Repeat a 1D array along the 0-axis 3 times.\nvar repeat1DAx0 = arrayImg1D.arrayRepeat(0, 3);\nprint('1D array repeated 3 times on 0-axis', sampArrImg(repeat1DAx0));\n// [0, 1, 2, 0, 1, 2, 0, 1, 2]\n\n// Repeat a 1D array along the 1-axis 3 times (expands the dimensions).\nvar repeat1DAx1 = arrayImg1D.arrayRepeat(1, 3);\nprint('1D array repeated 3 times on 1-axis', sampArrImg(repeat1DAx1));\n// [[0, 0, 0],\n// [1, 1, 1],\n// [2, 2, 2]]\n\n// Repeat a 2D array along the 0-axis 2 times.\nvar repeat2DAx0 = repeat1DAx1.arrayRepeat(0, 2);\nprint('2D array repeated 2 times on 0-axis', sampArrImg(repeat2DAx0));\n// [[0, 0, 0],\n// [1, 1, 1],\n// [2, 2, 2],\n// [0, 0, 0],\n// [1, 1, 1],\n// [2, 2, 2]]\n\n// Repeat a 2D array along the 1-axis 2 times.\nvar repeat2DAx1 = repeat1DAx1.arrayRepeat(1, 2);\nprint('2D array repeated 2 times on 1-axis', sampArrImg(repeat2DAx1));\n// [[0, 0, 0, 0, 0, 0],\n// [1, 1, 1, 1, 1, 1],\n// [2, 2, 2, 2, 2, 2]]\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\n# A function to print the array for a selected pixel in the following examples.\ndef samp_arr_img(arr_img):\n point = ee.Geometry.Point([-121, 42])\n return arr_img.sample(point, 500).first().get('array')\n\n# Create a 1D array image.\narray_img_1d = ee.Image([0, 1, 2]).toArray()\nprint('1D array image (pixel):', samp_arr_img(array_img_1d).getInfo())\n# [0, 1, 2]\n\n# Repeat a 1D array along the 0-axis 3 times.\nrepeat_1d_ax0 = array_img_1d.arrayRepeat(0, 3)\nprint(\n '1D array repeated 3 times on 0-axis:',\n samp_arr_img(repeat_1d_ax0).getInfo()\n)\n# [0, 1, 2, 0, 1, 2, 0, 1, 2]\n\n# Repeat a 1D array along the 1-axis 3 times (expands the dimensions).\nrepeat_1d_ax1 = array_img_1d.arrayRepeat(1, 3)\nprint(\n '1D array repeated 3 times on 1-axis:',\n samp_arr_img(repeat_1d_ax1).getInfo()\n)\n# [[0, 0, 0],\n# [1, 1, 1],\n# [2, 2, 2]]\n\n# Repeat a 2D array along the 0-axis 2 times.\nrepeat_2d_ax0 = repeat_1d_ax1.arrayRepeat(0, 2)\nprint(\n '2D array repeated 2 times on 0-axis:',\n samp_arr_img(repeat_2d_ax0).getInfo()\n)\n# [[0, 0, 0],\n# [1, 1, 1],\n# [2, 2, 2],\n# [0, 0, 0],\n# [1, 1, 1],\n# [2, 2, 2]]\n\n# Repeat a 2D array along the 1-axis 2 times.\nrepeat_2d_ax1 = repeat_1d_ax1.arrayRepeat(1, 2)\nprint(\n '2D array repeated 2 times on 1-axis:',\n samp_arr_img(repeat_2d_ax1).getInfo()\n)\n# [[0, 0, 0, 0, 0, 0],\n# [1, 1, 1, 1, 1, 1],\n# [2, 2, 2, 2, 2, 2]]\n```"]]