ee.ImageCollection.set
با مجموعهها، منظم بمانید
ذخیره و طبقهبندی محتوا براساس اولویتهای شما.
یک یا چند ویژگی ابرداده یک عنصر را لغو می کند.
عنصری را با ویژگی های مشخص شده لغو شده برمی گرداند.
استفاده | برمی گرداند | ImageCollection. set (var_args) | عنصر |
استدلال | تایپ کنید | جزئیات | این: element | عنصر | نمونه عنصر. |
var_args | VarArgs<Object> | یا یک فرهنگ لغت از ویژگی ها، یا یک دنباله vararg از ویژگی ها، به عنوان مثال key1، value1، key2، value2، ... |
نمونه ها
ویرایشگر کد (جاوا اسکریپت)
// A contrived, empty image collection for simple demonstration.
var col = ee.ImageCollection([]);
print('Collection without properties', col);
// Set collection properties using a dictionary.
col = col.set({
project_name: 'biomass_tracking',
project_id: 3,
plot_ids: ee.Array([7, 11, 20])
});
// Set collection properties using a series of key-value pairs.
col = col.set('project_year', 2018,
'rgb_vis', 'false_color');
print('Collection with properties', col);
// Get a dictionary of collection property keys and values.
print('Property keys and values (ee.Dictionary)', col.toDictionary());
// Get the value of a collection property. To use the result of
// ee.ImageCollection.get in further computation, you need to cast it to the
// appropriate class, for example, ee.Number(result) or ee.String(result).
print('Project ID (ambiguous object)', col.get('project_id'));
// Get the value of a string collection property as an ee.String object.
print('Project name (ee.String)', col.getString('project_name'));
// Get the value of a numeric collection property as an ee.Number object.
print('Project year (ee.Number)', col.getNumber('project_year'));
// Get the value of an ee.Array collection property as an ee.Array object.
print('Plot IDs (ee.Array)', col.getArray('plot_ids'));
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 contrived, empty image collection for simple demonstration.
col = ee.ImageCollection([])
print('Collection without properties:', col.getInfo())
# Set collection properties using a dictionary.
col = col.set({
'project_name': 'biomass_tracking',
'project_id': 3,
'plot_ids': ee.Array([7, 11, 20])
})
# Set collection properties using a series of key-value pairs.
col = col.set('project_year', 2018,
'rgb_vis', 'false_color')
print('Collection with properties:', col.getInfo())
# Get a dictionary of collection property keys and values.
print('Property keys and values (ee.Dictionary):', col.toDictionary().getInfo())
# Get the value of a collection property. To use the result of
# ee.ImageCollection.get in further computation, you need to cast it to the
# appropriate class, for example, ee.Number(result) or ee.String(result).
print('Project ID (ambiguous object):', col.get('project_id').getInfo())
# Get the value of a string collection property as an ee.String object.
print('Project name (ee.String):', col.getString('project_name').getInfo())
# Get the value of a numeric collection property as an ee.Number object.
print('Project year (ee.Number):', col.getNumber('project_year').getInfo())
# Get the value of an ee.Array collection property as an ee.Array object.
print('Plot IDs (ee.Array):', col.getArray('plot_ids').getInfo())
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\u003eThe \u003ccode\u003eset()\u003c/code\u003e method allows you to override metadata properties of an Element, such as an ImageCollection, using either a dictionary or key-value pairs.\u003c/p\u003e\n"],["\u003cp\u003eIt returns a new Element with the updated properties, leaving the original Element unchanged.\u003c/p\u003e\n"],["\u003cp\u003eYou can retrieve property values using methods like \u003ccode\u003eget()\u003c/code\u003e, \u003ccode\u003egetString()\u003c/code\u003e, \u003ccode\u003egetNumber()\u003c/code\u003e, and \u003ccode\u003egetArray()\u003c/code\u003e, and the \u003ccode\u003etoDictionary()\u003c/code\u003e method provides all properties as a dictionary.\u003c/p\u003e\n"],["\u003cp\u003eWhen using \u003ccode\u003eget()\u003c/code\u003e to retrieve a property value, it's crucial to cast the result to the appropriate data type (e.g., ee.Number, ee.String) for use in further computations.\u003c/p\u003e\n"]]],[],null,["# ee.ImageCollection.set\n\n\u003cbr /\u003e\n\nOverrides one or more metadata properties of an Element.\n\n\u003cbr /\u003e\n\nReturns the element with the specified properties overridden.\n\n| Usage | Returns |\n|---------------------------------|---------|\n| ImageCollection.set`(var_args)` | Element |\n\n| Argument | Type | Details |\n|-----------------|-------------------|-------------------------------------------------------------------------------------------------------------|\n| this: `element` | Element | The Element instance. |\n| `var_args` | VarArgs\\\u003cObject\\\u003e | Either a dictionary of properties, or a vararg sequence of properties, e.g. key1, value1, key2, value2, ... |\n\nExamples\n--------\n\n### Code Editor (JavaScript)\n\n```javascript\n// A contrived, empty image collection for simple demonstration.\nvar col = ee.ImageCollection([]);\nprint('Collection without properties', col);\n\n// Set collection properties using a dictionary.\ncol = col.set({\n project_name: 'biomass_tracking',\n project_id: 3,\n plot_ids: ee.Array([7, 11, 20])\n});\n\n// Set collection properties using a series of key-value pairs.\ncol = col.set('project_year', 2018,\n 'rgb_vis', 'false_color');\n\nprint('Collection with properties', col);\n\n// Get a dictionary of collection property keys and values.\nprint('Property keys and values (ee.Dictionary)', col.toDictionary());\n\n// Get the value of a collection property. To use the result of\n// ee.ImageCollection.get in further computation, you need to cast it to the\n// appropriate class, for example, ee.Number(result) or ee.String(result).\nprint('Project ID (ambiguous object)', col.get('project_id'));\n\n// Get the value of a string collection property as an ee.String object.\nprint('Project name (ee.String)', col.getString('project_name'));\n\n// Get the value of a numeric collection property as an ee.Number object.\nprint('Project year (ee.Number)', col.getNumber('project_year'));\n\n// Get the value of an ee.Array collection property as an ee.Array object.\nprint('Plot IDs (ee.Array)', col.getArray('plot_ids'));\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 contrived, empty image collection for simple demonstration.\ncol = ee.ImageCollection([])\nprint('Collection without properties:', col.getInfo())\n\n# Set collection properties using a dictionary.\ncol = col.set({\n 'project_name': 'biomass_tracking',\n 'project_id': 3,\n 'plot_ids': ee.Array([7, 11, 20])\n})\n\n# Set collection properties using a series of key-value pairs.\ncol = col.set('project_year', 2018,\n 'rgb_vis', 'false_color')\n\nprint('Collection with properties:', col.getInfo())\n\n# Get a dictionary of collection property keys and values.\nprint('Property keys and values (ee.Dictionary):', col.toDictionary().getInfo())\n\n# Get the value of a collection property. To use the result of\n# ee.ImageCollection.get in further computation, you need to cast it to the\n# appropriate class, for example, ee.Number(result) or ee.String(result).\nprint('Project ID (ambiguous object):', col.get('project_id').getInfo())\n\n# Get the value of a string collection property as an ee.String object.\nprint('Project name (ee.String):', col.getString('project_name').getInfo())\n\n# Get the value of a numeric collection property as an ee.Number object.\nprint('Project year (ee.Number):', col.getNumber('project_year').getInfo())\n\n# Get the value of an ee.Array collection property as an ee.Array object.\nprint('Plot IDs (ee.Array):', col.getArray('plot_ids').getInfo())\n```"]]