Export.classifier.toAsset
با مجموعهها، منظم بمانید
ذخیره و طبقهبندی محتوا براساس اولویتهای شما.
یک کار دسته ای برای صادر کردن ee.Classifier به عنوان دارایی Earth Engine ایجاد می کند.
فقط برای ee.Classifier.smileRandomForest، ee.Classifier.smileCart، ee.Classifier.DecisionTree و ee.Classifier.DecisionTreeEnsemble پشتیبانی می شود.
استفاده | برمی گرداند | Export.classifier.toAsset(classifier, description , assetId , priority ) | |
استدلال | تایپ کنید | جزئیات | classifier | Computed Object | طبقه بندی کننده برای صادرات |
description | رشته، اختیاری | نام کار قابل خواندن برای انسان. پیشفرض «myExportClassifierTask» است. |
assetId | رشته، اختیاری | شناسه دارایی مقصد. |
priority | شماره، اختیاری | اولویت کار در پروژه. کارهای با اولویت بالاتر زودتر برنامه ریزی می شوند. باید یک عدد صحیح بین 0 و 9999 باشد. پیش فرض 100 است. |
نمونه ها
ویرایشگر کد (جاوا اسکریپت)
// First gather the training data for a random forest classifier.
// Let's use MCD12Q1 yearly landcover for the labels.
var landcover = ee.ImageCollection('MODIS/061/MCD12Q1')
.filterDate('2022-01-01', '2022-12-31')
.first()
.select('LC_Type1');
// A region of interest for training our classifier.
var region = ee.Geometry.BBox(17.33, 36.07, 26.13, 43.28);
// Training features will be based on a Landsat 8 composite.
var l8 = ee.ImageCollection('LANDSAT/LC08/C02/T1')
.filterBounds(region)
.filterDate('2022-01-01', '2023-01-01');
// Draw the Landsat composite, visualizing true color bands.
var landsatComposite = ee.Algorithms.Landsat.simpleComposite({
collection: l8,
asFloat: true
});
Map.addLayer(landsatComposite, {
min: 0,
max: 0.3,
bands: ['B3', 'B2', 'B1']
}, 'Landsat composite');
// Make a training dataset by sampling the stacked images.
var training = landcover.addBands(landsatComposite).sample({
region: region,
scale: 30,
// With export to Classifier we can bump this higher to say 10,000.
numPixels: 1000
});
var classifier = ee.Classifier.smileRandomForest({
// We can also increase the number of trees higher to ~100 if needed.
numberOfTrees: 3
}).train({features: training, classProperty: 'LC_Type1'});
// Create an export classifier task to run.
var assetId = 'projects/<project-name>/assets/<asset-name>'; // <> modify these
Export.classifier.toAsset({
classifier: classifier,
description: 'classifier_export',
assetId: assetId
});
// Load the classifier after the export finishes and visualize.
var savedClassifier = ee.Classifier.load(assetId)
var landcoverPalette = '05450a,086a10,54a708,78d203,009900,c6b044,dcd159,' +
'dade48,fbff13,b6ff05,27ff87,c24f44,a5a5a5,ff6d4c,69fff8,f9ffa4,1c0dff';
var landcoverVisualization = {
palette: landcoverPalette,
min: 0,
max: 16,
format: 'png'
};
Map.addLayer(
landsatComposite.classify(savedClassifier),
landcoverVisualization,
'Upsampled landcover, saved');
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)
# First gather the training data for a random forest classifier.
# Let's use MCD12Q1 yearly landcover for the labels.
landcover = (ee.ImageCollection('MODIS/061/MCD12Q1')
.filterDate('2022-01-01', '2022-12-31')
.first()
.select('LC_Type1'))
# A region of interest for training our classifier.
region = ee.Geometry.BBox(17.33, 36.07, 26.13, 43.28)
# Training features will be based on a Landsat 8 composite.
l8 = (ee.ImageCollection('LANDSAT/LC08/C02/T1')
.filterBounds(region)
.filterDate('2022-01-01', '2023-01-01'))
# Draw the Landsat composite, visualizing true color bands.
landsatComposite = ee.Algorithms.Landsat.simpleComposite(
collection=l8, asFloat=True)
Map = geemap.Map()
Map # Render the map in the notebook.
Map.addLayer(landsatComposite, {
'min': 0,
'max': 0.3,
'bands': ['B3', 'B2', 'B1']
}, 'Landsat composite')
# Make a training dataset by sampling the stacked images.
training = landcover.addBands(landsatComposite).sample(
region=region,
scale=30,
# With export to Classifier we can bump this higher to say 10,000.
numPixels=1000
)
# We can also increase the number of trees higher to ~100 if needed.
classifier = ee.Classifier.smileRandomForest(
numberOfTrees=3).train(features=training, classProperty='LC_Type1')
# Create an export classifier task to run.
asset_id = 'projects/<project-name>/assets/<asset-name>' # <> modify these
ee.batch.Export.classifier.toAsset(
classifier=classifier,
description='classifier_export',
assetId=asset_id
)
# Load the classifier after the export finishes and visualize.
savedClassifier = ee.Classifier.load(asset_id)
landcover_palette = [
'05450a', '086a10', '54a708', '78d203', '009900',
'c6b044', 'dcd159', 'dade48', 'fbff13', 'b6ff05',
'27ff87', 'c24f44', 'a5a5a5', 'ff6d4c', '69fff8',
'f9ffa4', '1c0dff']
landcoverVisualization = {
'palette': landcover_palette,
'min': 0,
'max': 16,
'format': 'png'
}
Map.addLayer(
landsatComposite.classify(savedClassifier),
landcoverVisualization,
'Upsampled landcover, saved')
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\u003eExports an Earth Engine classifier as an asset for later use.\u003c/p\u003e\n"],["\u003cp\u003eAllows customization of the export task with description, asset ID, and priority settings.\u003c/p\u003e\n"],["\u003cp\u003eProvides code examples in JavaScript and Python demonstrating the export and subsequent use of the saved classifier.\u003c/p\u003e\n"],["\u003cp\u003eUtilizes a Landsat-based composite and MODIS landcover data for training the classifier in the examples.\u003c/p\u003e\n"],["\u003cp\u003eEnables efficient saving and loading of trained classifiers within the Earth Engine platform.\u003c/p\u003e\n"]]],["This content details exporting an `ee.Classifier` as an Earth Engine asset using `Export.classifier.toAsset`. Key actions include: creating a classifier, defining a training dataset using landcover data and Landsat composites, sampling training data, and then training the classifier. The export process involves specifying the `classifier`, `description`, `assetId`, and `priority`. After export, the saved classifier can be loaded and used for classification, then visualized.\n"],null,["# Export.classifier.toAsset\n\n\u003cbr /\u003e\n\nCreates a batch task to export an ee.Classifier as an Earth Engine asset.\n\n\u003cbr /\u003e\n\nOnly supported for ee.Classifier.smileRandomForest, ee.Classifier.smileCart, ee.Classifier.DecisionTree and ee.Classifier.DecisionTreeEnsemble.\n\n| Usage | Returns |\n|---------------------------------------------------------------------------------------|---------|\n| `Export.classifier.toAsset(classifier, `*description* `, `*assetId* `, `*priority*`)` | |\n\n| Argument | Type | Details |\n|---------------|------------------|--------------------------------------------------------------------------------------------------------------------------------------------------|\n| `classifier` | ComputedObject | The classifier to export. |\n| `description` | String, optional | A human-readable name of the task. Defaults to \"myExportClassifierTask\". |\n| `assetId` | String, optional | The destination asset ID. |\n| `priority` | Number, optional | The priority of the task within the project. Higher priority tasks are scheduled sooner. Must be an integer between 0 and 9999. Defaults to 100. |\n\nExamples\n--------\n\n### Code Editor (JavaScript)\n\n```javascript\n// First gather the training data for a random forest classifier.\n// Let's use MCD12Q1 yearly landcover for the labels.\nvar landcover = ee.ImageCollection('MODIS/061/MCD12Q1')\n .filterDate('2022-01-01', '2022-12-31')\n .first()\n .select('LC_Type1');\n// A region of interest for training our classifier.\nvar region = ee.Geometry.BBox(17.33, 36.07, 26.13, 43.28);\n\n// Training features will be based on a Landsat 8 composite.\nvar l8 = ee.ImageCollection('LANDSAT/LC08/C02/T1')\n .filterBounds(region)\n .filterDate('2022-01-01', '2023-01-01');\n\n// Draw the Landsat composite, visualizing true color bands.\nvar landsatComposite = ee.Algorithms.Landsat.simpleComposite({\n collection: l8,\n asFloat: true\n});\nMap.addLayer(landsatComposite, {\n min: 0,\n max: 0.3,\n bands: ['B3', 'B2', 'B1']\n}, 'Landsat composite');\n\n// Make a training dataset by sampling the stacked images.\nvar training = landcover.addBands(landsatComposite).sample({\n region: region,\n scale: 30,\n // With export to Classifier we can bump this higher to say 10,000.\n numPixels: 1000\n});\n\nvar classifier = ee.Classifier.smileRandomForest({\n // We can also increase the number of trees higher to ~100 if needed.\n numberOfTrees: 3\n}).train({features: training, classProperty: 'LC_Type1'});\n\n// Create an export classifier task to run.\nvar assetId = 'projects/\u003cproject-name\u003e/assets/\u003casset-name\u003e'; // \u003c\u003e modify these\nExport.classifier.toAsset({\n classifier: classifier,\n description: 'classifier_export',\n assetId: assetId\n});\n\n// Load the classifier after the export finishes and visualize.\nvar savedClassifier = ee.Classifier.load(assetId)\nvar landcoverPalette = '05450a,086a10,54a708,78d203,009900,c6b044,dcd159,' +\n 'dade48,fbff13,b6ff05,27ff87,c24f44,a5a5a5,ff6d4c,69fff8,f9ffa4,1c0dff';\nvar landcoverVisualization = {\n palette: landcoverPalette,\n min: 0,\n max: 16,\n format: 'png'\n};\nMap.addLayer(\n landsatComposite.classify(savedClassifier),\n landcoverVisualization,\n 'Upsampled landcover, saved');\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# First gather the training data for a random forest classifier.\n# Let's use MCD12Q1 yearly landcover for the labels.\nlandcover = (ee.ImageCollection('MODIS/061/MCD12Q1')\n .filterDate('2022-01-01', '2022-12-31')\n .first()\n .select('LC_Type1'))\n\n# A region of interest for training our classifier.\nregion = ee.Geometry.BBox(17.33, 36.07, 26.13, 43.28)\n\n# Training features will be based on a Landsat 8 composite.\nl8 = (ee.ImageCollection('LANDSAT/LC08/C02/T1')\n .filterBounds(region)\n .filterDate('2022-01-01', '2023-01-01'))\n\n# Draw the Landsat composite, visualizing true color bands.\nlandsatComposite = ee.Algorithms.Landsat.simpleComposite(\n collection=l8, asFloat=True)\n\nMap = geemap.Map()\nMap # Render the map in the notebook.\nMap.addLayer(landsatComposite, {\n 'min': 0,\n 'max': 0.3,\n 'bands': ['B3', 'B2', 'B1']\n}, 'Landsat composite')\n\n# Make a training dataset by sampling the stacked images.\ntraining = landcover.addBands(landsatComposite).sample(\n region=region,\n scale=30,\n # With export to Classifier we can bump this higher to say 10,000.\n numPixels=1000\n)\n\n# We can also increase the number of trees higher to ~100 if needed.\nclassifier = ee.Classifier.smileRandomForest(\n numberOfTrees=3).train(features=training, classProperty='LC_Type1')\n\n# Create an export classifier task to run.\nasset_id = 'projects/\u003cproject-name\u003e/assets/\u003casset-name\u003e' # \u003c\u003e modify these\nee.batch.Export.classifier.toAsset(\n classifier=classifier,\n description='classifier_export',\n assetId=asset_id\n)\n\n# Load the classifier after the export finishes and visualize.\nsavedClassifier = ee.Classifier.load(asset_id)\nlandcover_palette = [\n '05450a', '086a10', '54a708', '78d203', '009900',\n 'c6b044', 'dcd159', 'dade48', 'fbff13', 'b6ff05',\n '27ff87', 'c24f44', 'a5a5a5', 'ff6d4c', '69fff8',\n 'f9ffa4', '1c0dff']\nlandcoverVisualization = {\n 'palette': landcover_palette,\n 'min': 0,\n 'max': 16,\n 'format': 'png'\n}\nMap.addLayer(\n landsatComposite.classify(savedClassifier),\n landcoverVisualization,\n 'Upsampled landcover, saved')\n```"]]