ee.Image.arrayAccum
संग्रह की मदद से व्यवस्थित रहें
अपनी प्राथमिकताओं के आधार पर, कॉन्टेंट को सेव करें और कैटगरी में बांटें.
यह फ़ंक्शन, दिए गए ऐक्सिस के हिसाब से हर ऐरे पिक्सल के एलिमेंट इकट्ठा करता है. इसके लिए, यह नतीजे के तौर पर मिले ऐरे पिक्सल के हर एलिमेंट को, दिए गए ऐक्सिस के हिसाब से उस पिक्सल के एलिमेंट के रिडक्शन पर सेट करता है. ऐसा, ऐक्सिस पर मौजूद मौजूदा पोज़िशन तक किया जाता है. इसका इस्तेमाल, संचयी योग, मोनोटोनिक रूप से बढ़ने वाली सीक्वेंस वगैरह बनाने के लिए किया जा सकता है.
इस्तेमाल | रिटर्न |
---|
Image.arrayAccum(axis, reducer) | इमेज |
आर्ग्यूमेंट | टाइप | विवरण |
---|
यह: input | इमेज | इनपुट इमेज. |
axis | पूर्णांक | वह ऐक्सिस जिसके हिसाब से, वैल्यू का क्रमवार योग निकालना है. |
reducer | Reducer, default: null | वैल्यू इकट्ठा करने के लिए रिड्यूसर. डिफ़ॉल्ट रूप से SUM फ़ंक्शन का इस्तेमाल किया जाता है, ताकि दिए गए ऐक्सिस के हिसाब से हर वेक्टर का कुल योग निकाला जा सके. |
उदाहरण
कोड एडिटर (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([1, 2, 3]).toArray();
print('1D array image (pixel)', sampArrImg(arrayImg1D));
// [1, 2, 3]
// Perform accumulation procedures along axes using ee.Reducer functions.
// Here we calculate the cumulative sum along the 0-axis for a 1D array.
var accumSum1DAx0 = arrayImg1D.arrayAccum(0, ee.Reducer.sum());
print('Cumulative sum along 0-axis', sampArrImg(accumSum1DAx0));
// [1, 3, 6]
// Create a 2D 3x3 array image.
var arrayImg2D = ee.Image([1, 2, 3, 4, 5, 6, 7, 8, 9]).toArray()
.arrayReshape(ee.Image([3, 3]).toArray(), 2);
print('2D 3x3 array image (pixel)', sampArrImg(arrayImg2D));
// [[1, 2, 3],
// [4, 5, 6],
// [7, 8, 9]]
// Calculate the cumulative sum along the 0-axis for a 2D array.
var accumSum2DAx0 = arrayImg2D.arrayAccum(0, ee.Reducer.sum());
print('Cumulative sum along 0-axis', sampArrImg(accumSum2DAx0));
// [[ 1, 2, 3],
// [ 5, 7, 9],
// [12, 15, 18]]
// Calculate the cumulative sum along the 1-axis for a 2D array.
var accumSum2DAx1 = arrayImg2D.arrayAccum(1, ee.Reducer.sum());
print('Cumulative sum along 1-axis', sampArrImg(accumSum2DAx1));
// [[1, 3, 6],
// [4, 9, 15],
// [7, 15, 24]]
Python सेटअप करना
Python API और इंटरैक्टिव डेवलपमेंट के लिए geemap
का इस्तेमाल करने के बारे में जानकारी पाने के लिए,
Python एनवायरमेंट पेज देखें.
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([1, 2, 3]).toArray()
print('1D array image (pixel):', samp_arr_img(array_img_1d).getInfo())
# [1, 2, 3]
# Perform accumulation procedures along axes using ee.Reducer functions.
# Here we calculate the cumulative sum along the 0-axis for a 1D array.
accum_sum_1d_ax0 = array_img_1d.arrayAccum(0, ee.Reducer.sum())
print('Cumulative sum along 0-axis:', samp_arr_img(accum_sum_1d_ax0).getInfo())
# [1, 3, 6]
# Create a 2D 3x3 array image.
array_img_2d = ee.Image([1, 2, 3, 4, 5, 6, 7, 8, 9]).toArray().arrayReshape(
ee.Image([3, 3]).toArray(),
2)
print('2D 3x3 array image (pixel):', samp_arr_img(array_img_2d).getInfo())
# [[1, 2, 3],
# [4, 5, 6],
# [7, 8, 9]]
# Calculate the cumulative sum along the 0-axis for a 2D array.
accum_sum_2d_ax0 = array_img_2d.arrayAccum(0, ee.Reducer.sum())
print('Cumulative sum along 0-axis:', samp_arr_img(accum_sum_2d_ax0).getInfo())
# [[ 1, 2, 3],
# [ 5, 7, 9],
# [12, 15, 18]]
# Calculate the cumulative sum along the 1-axis for a 2D array.
accum_sum_2d_ax1 = array_img_2d.arrayAccum(1, ee.Reducer.sum())
print('Cumulative sum along 1-axis:', samp_arr_img(accum_sum_2d_ax1).getInfo())
# [[1, 3, 6],
# [4, 9, 15],
# [7, 15, 24]]
जब तक कुछ अलग से न बताया जाए, तब तक इस पेज की सामग्री को Creative Commons Attribution 4.0 License के तहत और कोड के नमूनों को Apache 2.0 License के तहत लाइसेंस मिला है. ज़्यादा जानकारी के लिए, Google Developers साइट नीतियां देखें. Oracle और/या इससे जुड़ी हुई कंपनियों का, Java एक रजिस्टर किया हुआ ट्रेडमार्क है.
आखिरी बार 2025-07-26 (UTC) को अपडेट किया गया.
[null,null,["आखिरी बार 2025-07-26 (UTC) को अपडेट किया गया."],[[["\u003cp\u003e\u003ccode\u003eImage.arrayAccum()\u003c/code\u003e calculates the cumulative reduction of elements within each pixel of an array image along a specified axis.\u003c/p\u003e\n"],["\u003cp\u003eIt uses a reducer (defaulting to sum) to determine how elements are accumulated, producing a new array image.\u003c/p\u003e\n"],["\u003cp\u003eThe axis argument specifies the direction of accumulation (0 for rows, 1 for columns in 2D arrays).\u003c/p\u003e\n"],["\u003cp\u003eThis function is useful for generating cumulative sums, monotonically increasing sequences, and other cumulative calculations within array images.\u003c/p\u003e\n"],["\u003cp\u003eIt's applicable to both 1D and multidimensional array images in Earth Engine.\u003c/p\u003e\n"]]],[],null,["# ee.Image.arrayAccum\n\nAccumulates elements of each array pixel along the given axis, by setting each element of the result array pixel to the reduction of elements in that pixel along the given axis, up to and including the current position on the axis. May be used to make a cumulative sum, a monotonically increasing sequence, etc.\n\n\u003cbr /\u003e\n\n| Usage | Returns |\n|---------------------------------------|---------|\n| Image.arrayAccum`(axis, `*reducer*`)` | Image |\n\n| Argument | Type | Details |\n|---------------|------------------------|------------------------------------------------------------------------------------------------------------------|\n| this: `input` | Image | Input image. |\n| `axis` | Integer | Axis along which to perform the cumulative sum. |\n| `reducer` | Reducer, default: null | Reducer to accumulate values. Default is SUM, to produce the cumulative sum of each vector along the given axis. |\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([1, 2, 3]).toArray();\nprint('1D array image (pixel)', sampArrImg(arrayImg1D));\n// [1, 2, 3]\n\n// Perform accumulation procedures along axes using ee.Reducer functions.\n// Here we calculate the cumulative sum along the 0-axis for a 1D array.\nvar accumSum1DAx0 = arrayImg1D.arrayAccum(0, ee.Reducer.sum());\nprint('Cumulative sum along 0-axis', sampArrImg(accumSum1DAx0));\n// [1, 3, 6]\n\n// Create a 2D 3x3 array image.\nvar arrayImg2D = ee.Image([1, 2, 3, 4, 5, 6, 7, 8, 9]).toArray()\n .arrayReshape(ee.Image([3, 3]).toArray(), 2);\nprint('2D 3x3 array image (pixel)', sampArrImg(arrayImg2D));\n// [[1, 2, 3],\n// [4, 5, 6],\n// [7, 8, 9]]\n\n// Calculate the cumulative sum along the 0-axis for a 2D array.\nvar accumSum2DAx0 = arrayImg2D.arrayAccum(0, ee.Reducer.sum());\nprint('Cumulative sum along 0-axis', sampArrImg(accumSum2DAx0));\n// [[ 1, 2, 3],\n// [ 5, 7, 9],\n// [12, 15, 18]]\n\n// Calculate the cumulative sum along the 1-axis for a 2D array.\nvar accumSum2DAx1 = arrayImg2D.arrayAccum(1, ee.Reducer.sum());\nprint('Cumulative sum along 1-axis', sampArrImg(accumSum2DAx1));\n// [[1, 3, 6],\n// [4, 9, 15],\n// [7, 15, 24]]\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([1, 2, 3]).toArray()\nprint('1D array image (pixel):', samp_arr_img(array_img_1d).getInfo())\n# [1, 2, 3]\n\n# Perform accumulation procedures along axes using ee.Reducer functions.\n# Here we calculate the cumulative sum along the 0-axis for a 1D array.\naccum_sum_1d_ax0 = array_img_1d.arrayAccum(0, ee.Reducer.sum())\nprint('Cumulative sum along 0-axis:', samp_arr_img(accum_sum_1d_ax0).getInfo())\n# [1, 3, 6]\n\n# Create a 2D 3x3 array image.\narray_img_2d = ee.Image([1, 2, 3, 4, 5, 6, 7, 8, 9]).toArray().arrayReshape(\n ee.Image([3, 3]).toArray(),\n 2)\nprint('2D 3x3 array image (pixel):', samp_arr_img(array_img_2d).getInfo())\n# [[1, 2, 3],\n# [4, 5, 6],\n# [7, 8, 9]]\n\n# Calculate the cumulative sum along the 0-axis for a 2D array.\naccum_sum_2d_ax0 = array_img_2d.arrayAccum(0, ee.Reducer.sum())\nprint('Cumulative sum along 0-axis:', samp_arr_img(accum_sum_2d_ax0).getInfo())\n# [[ 1, 2, 3],\n# [ 5, 7, 9],\n# [12, 15, 18]]\n\n# Calculate the cumulative sum along the 1-axis for a 2D array.\naccum_sum_2d_ax1 = array_img_2d.arrayAccum(1, ee.Reducer.sum())\nprint('Cumulative sum along 1-axis:', samp_arr_img(accum_sum_2d_ax1).getInfo())\n# [[1, 3, 6],\n# [4, 9, 15],\n# [7, 15, 24]]\n```"]]