ee.Image.arrayDimensions
संग्रह की मदद से व्यवस्थित रहें
अपनी प्राथमिकताओं के आधार पर, कॉन्टेंट को सेव करें और कैटगरी में बांटें.
यह फ़ंक्शन, हर ऐरे बैंड में डाइमेंशन की संख्या दिखाता है. साथ ही, स्केलर इमेज बैंड के लिए 0 दिखाता है.
इस्तेमाल | रिटर्न |
---|
Image.arrayDimensions() | इमेज |
आर्ग्यूमेंट | टाइप | विवरण |
---|
यह: input | इमेज | इनपुट इमेज. |
उदाहरण
कोड एडिटर (JavaScript)
// A function to print arrays 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');
}
// A 3-band image of constants.
var img = ee.Image([0, 1, 2]);
print('3-band image', img);
// Convert the 3-band image to a 2D array image.
var arrayImg2D = img.toArray().toArray(1);
print('2D array image (pixel)', sampArrImg(arrayImg2D));
// [[0],
// [1],
// [2]]
// Get the number of dimensions in each pixel's array.
var arrayImg2Ddim = arrayImg2D.arrayDimensions();
print('N dimensions in array', sampArrImg(arrayImg2Ddim));
// 2
// Get the array length per dimension per pixel.
var arrayImg2DdimLen = arrayImg2D.arrayLengths();
print('Array length per dimension', sampArrImg(arrayImg2DdimLen));
// [3, 1]
// Get the array length for 0-axis (rows).
var arrayImg2Daxis0Len = arrayImg2D.arrayLength(0);
print('Array length 0-axis (rows)', sampArrImg(arrayImg2Daxis0Len));
// 3
// Get the array length for 1-axis (columns).
var arrayImg2Daxis1Len = arrayImg2D.arrayLength(1);
print('Array length 1-axis (columns)', sampArrImg(arrayImg2Daxis1Len));
// 1
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 arrays 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')
# A 3-band image of constants.
img = ee.Image([0, 1, 2])
print('3-band image:', img.getInfo())
# Convert the 3-band image to a 2D array image.
array_img_2d = img.toArray().toArray(1)
print('2D array image (pixel):', samp_arr_img(array_img_2d).getInfo())
# [[0],
# [1],
# [2]]
# Get the number of dimensions in each pixel's array.
array_img_2d_dim = array_img_2d.arrayDimensions()
print('N dimensions in array:', samp_arr_img(array_img_2d_dim).getInfo())
# 2
# Get the array length per dimension per pixel.
array_img_2d_dim_len = array_img_2d.arrayLengths()
print(
'Array length per dimension:',
samp_arr_img(array_img_2d_dim_len).getInfo()
)
# [3, 1]
# Get the array length for 0-axis (rows).
array_img_2d_axis0_len = array_img_2d.arrayLength(0)
print(
'Array length 0-axis (rows):',
samp_arr_img(array_img_2d_axis0_len).getInfo()
)
# 3
# Get the array length for 1-axis (columns).
array_img_2d_axis1_len = array_img_2d.arrayLength(1)
print(
'Array length 1-axis (columns):',
samp_arr_img(array_img_2d_axis1_len).getInfo()
)
# 1
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\u003eReturns the number of dimensions in each array band of an image.\u003c/p\u003e\n"],["\u003cp\u003eOutputs 0 for scalar image bands, indicating no dimensions.\u003c/p\u003e\n"],["\u003cp\u003eAccepts an input image and applies the operation on a per-pixel basis.\u003c/p\u003e\n"],["\u003cp\u003eProvides information about the structure of array-based images in Earth Engine.\u003c/p\u003e\n"]]],["The `arrayDimensions()` method determines the number of dimensions in each array band of an image, returning 0 for scalar bands. The examples demonstrate creating a 3-band image, converting it to a 2D array image, and then using `arrayDimensions()` to find the number of dimensions which was 2. Additionaly, it uses the `arrayLengths()` to get the lengths per dimension. The code is presented in both JavaScript and Python, showcasing consistent functionality.\n"],null,["# ee.Image.arrayDimensions\n\nReturns the number of dimensions in each array band, and 0 for scalar image bands.\n\n\u003cbr /\u003e\n\n| Usage | Returns |\n|---------------------------|---------|\n| Image.arrayDimensions`()` | Image |\n\n| Argument | Type | Details |\n|---------------|-------|--------------|\n| this: `input` | Image | Input image. |\n\nExamples\n--------\n\n### Code Editor (JavaScript)\n\n```javascript\n// A function to print arrays 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// A 3-band image of constants.\nvar img = ee.Image([0, 1, 2]);\nprint('3-band image', img);\n\n// Convert the 3-band image to a 2D array image.\nvar arrayImg2D = img.toArray().toArray(1);\nprint('2D array image (pixel)', sampArrImg(arrayImg2D));\n// [[0],\n// [1],\n// [2]]\n\n// Get the number of dimensions in each pixel's array.\nvar arrayImg2Ddim = arrayImg2D.arrayDimensions();\nprint('N dimensions in array', sampArrImg(arrayImg2Ddim));\n// 2\n\n// Get the array length per dimension per pixel.\nvar arrayImg2DdimLen = arrayImg2D.arrayLengths();\nprint('Array length per dimension', sampArrImg(arrayImg2DdimLen));\n// [3, 1]\n\n// Get the array length for 0-axis (rows).\nvar arrayImg2Daxis0Len = arrayImg2D.arrayLength(0);\nprint('Array length 0-axis (rows)', sampArrImg(arrayImg2Daxis0Len));\n// 3\n\n// Get the array length for 1-axis (columns).\nvar arrayImg2Daxis1Len = arrayImg2D.arrayLength(1);\nprint('Array length 1-axis (columns)', sampArrImg(arrayImg2Daxis1Len));\n// 1\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 arrays 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# A 3-band image of constants.\nimg = ee.Image([0, 1, 2])\nprint('3-band image:', img.getInfo())\n\n# Convert the 3-band image to a 2D array image.\narray_img_2d = img.toArray().toArray(1)\nprint('2D array image (pixel):', samp_arr_img(array_img_2d).getInfo())\n# [[0],\n# [1],\n# [2]]\n\n# Get the number of dimensions in each pixel's array.\narray_img_2d_dim = array_img_2d.arrayDimensions()\nprint('N dimensions in array:', samp_arr_img(array_img_2d_dim).getInfo())\n# 2\n\n# Get the array length per dimension per pixel.\narray_img_2d_dim_len = array_img_2d.arrayLengths()\nprint(\n 'Array length per dimension:',\n samp_arr_img(array_img_2d_dim_len).getInfo()\n)\n# [3, 1]\n\n# Get the array length for 0-axis (rows).\narray_img_2d_axis0_len = array_img_2d.arrayLength(0)\nprint(\n 'Array length 0-axis (rows):',\n samp_arr_img(array_img_2d_axis0_len).getInfo()\n)\n# 3\n\n# Get the array length for 1-axis (columns).\narray_img_2d_axis1_len = array_img_2d.arrayLength(1)\nprint(\n 'Array length 1-axis (columns):',\n samp_arr_img(array_img_2d_axis1_len).getInfo()\n)\n# 1\n```"]]