ee.Image.arrayRepeat
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هر پیکسل آرایه را در امتداد محور داده شده تکرار می کند. هر پیکسل خروجی شکل پیکسل ورودی را خواهد داشت، به جز طول در امتداد محور مکرر که در تعداد کپی ها ضرب می شود.
استفاده | برمی گرداند | Image. arrayRepeat (axis, copies) | تصویر |
استدلال | تایپ کنید | جزئیات | این: input | تصویر | تصویر پیکسل های آرایه که باید تکرار شوند. |
axis | عدد صحیح | محوری که در امتداد آن آرایه هر پیکسل تکرار شود. |
copies | تصویر | تعداد کپی از هر پیکسل |
نمونه ها
ویرایشگر کد (جاوا اسکریپت)
// 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]]
راه اندازی پایتون
برای اطلاعات در مورد API پایتون و استفاده از geemap
برای توسعه تعاملی به صفحه محیط پایتون مراجعه کنید.
import ee
import geemap.core as geemap
کولب (پایتون)
# 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]]
جز در مواردی که غیر از این ذکر شده باشد،محتوای این صفحه تحت مجوز Creative Commons Attribution 4.0 License است. نمونه کدها نیز دارای مجوز Apache 2.0 License است. برای اطلاع از جزئیات، به خطمشیهای سایت Google Developers مراجعه کنید. جاوا علامت تجاری ثبتشده Oracle و/یا شرکتهای وابسته به آن است.
تاریخ آخرین بهروزرسانی 2025-07-24 بهوقت ساعت هماهنگ جهانی.
[null,null,["تاریخ آخرین بهروزرسانی 2025-07-24 بهوقت ساعت هماهنگ جهانی."],[[["\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```"]]