Export.image.toAsset

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Creates a batch task to export an Image as a raster to an Earth Engine asset. Tasks can be started from the Tasks tab.

UsageReturns
Export.image.toAsset(image, description, assetId, pyramidingPolicy, dimensions, region, scale, crs, crsTransform, maxPixels, shardSize)
ArgumentTypeDetails
imageImageThe image to export.
descriptionString, optionalA human-readable name of the task. Defaults to "myExportImageTask".
assetIdString, optionalThe destination asset ID.
pyramidingPolicyObject, optionalThe pyramiding policy to apply to each band in the image, keyed by band name. Values must be one of: mean, sample, min, max, or mode. Defaults to "mean". A special key, ".default" may be used to change the default for all bands.
dimensionsNumber|String, optionalThe dimensions to use for the exported image. Takes either a single positive integer as the maximum dimension or "WIDTHxHEIGHT" where WIDTH and HEIGHT are each positive integers.
regionGeometry.LinearRing|Geometry.Polygon|String, optionalA LinearRing, Polygon, or coordinates representing region to export. These may be specified as the Geometry objects or coordinates serialized as a string.
scaleNumber, optionalResolution in meters per pixel. Defaults to 1000.
crsString, optionalCRS to use for the exported image.
crsTransformList, optionalAffine transform to use for the exported image. Requires "crs" to be defined.
maxPixelsNumber, optionalRestrict the number of pixels in the export. By default, you will see an error if the export exceeds 1e8 pixels. Setting this value explicitly allows one to raise or lower this limit.
shardSizeNumber, optionalSize in pixels of the tiles in which this image will be computed. Defaults to 256.

Examples

Code Editor (JavaScript)

// A Landsat 8 surface reflectance image.
var image = ee.Image('LANDSAT/LC08/C02/T1_L2/LC08_044034_20210508')
  .select(['SR_B.']);  // reflectance bands

// A region of interest.
var region = ee.Geometry.BBox(-122.24, 37.13, -122.11, 37.20);

// Set the export "scale" and "crs" parameters.
Export.image.toAsset({
  image: image,
  description: 'image_export',
  assetId: 'projects/<project-name>/assets/<asset-name>',  // <> modify these
  region: region,
  scale: 30,
  crs: 'EPSG:5070'
});

// Use the "crsTransform" export parameter instead of "scale" for more control
// over the output grid. Here, "crsTransform" is set to align the output grid
// with the grid of another dataset. To view an image's CRS transform:
// print(image.projection())
Export.image.toAsset({
  image: image,
  description: 'image_export_crstransform',
  assetId: 'projects/<project-name>/assets/<asset-name>',  // <> modify these
  region: region,
  crsTransform: [30, 0, -2493045, 0, -30, 3310005],
  crs: 'EPSG:5070'
});

// If the export has more than 1e8 pixels, set "maxPixels" higher.
Export.image.toAsset({
  image: image,
  description: 'image_export_maxpixels',
  assetId: 'projects/<project-name>/assets/<asset-name>',  // <> modify these
  region: region,
  scale: 30,
  crs: 'EPSG:5070',
  maxPixels: 1e13
});

// The default "pyramidingPolicy" is mean. If data are categorical,
// consider mode.
Export.image.toAsset({
  image: image.select('SR_B5'),
  description: 'image_export_pyramiding',
  assetId: 'projects/<project-name>/assets/<asset-name>',  // <> modify these
  region: region,
  scale: 30,
  crs: 'EPSG:5070',
  pyramidingPolicy: {SR_B5: 'mode'}
});