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Showing content from https://developers.google.com/earth-engine/apidocs/ee-image-getdownloadurl below:

ee.Image.getDownloadURL | Google Earth Engine

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Get a download URL for small chunks of image data in GeoTIFF or NumPy format. Maximum request size is 32 MB, maximum grid dimension is 10000.

Use getThumbURL for RGB visualization formats PNG and JPG.

Returns returns a download URL, or undefined if a callback was specified.

• id: the name of the band, a string, required.
• crs: an optional CRS string defining the band projection.
• crs_transform: an optional array of 6 numbers specifying an affine transform from the specified CRS, in row-major order: [xScale, xShearing, xTranslation, yShearing, yScale, yTranslation]
• dimensions: an optional array of two integers defining the width and height to which the band is cropped.
• scale: an optional number, specifying the scale in meters of the band; ignored if crs and crs_transform are specified.

• "ZIPPED_GEO_TIFF" (GeoTIFF file(s) wrapped in a zip file, default)
• "GEO_TIFF" (GeoTIFF file)
• "NPY" (NumPy binary format)

// A Sentinel-2 surface reflectance image.
var img = ee.Image('COPERNICUS/S2_SR/20210109T185751_20210109T185931_T10SEG');

// A small region within the image.
var region = ee.Geometry.BBox(-122.0859, 37.0436, -122.0626, 37.0586);

print('Single-band GeoTIFF files wrapped in a zip file',
  img.getDownloadURL({
    name: 'single_band',
    bands: ['B3', 'B8', 'B11'],
    region: region
  }));

print('Multi-band GeoTIFF file wrapped in a zip file',
  img.getDownloadURL({
    name: 'multi_band',
    bands: ['B3', 'B8', 'B11'],
    region: region,
    scale: 20,
    filePerBand: false
  }));

print('Band-specific transformations',
  img.getDownloadURL({
    name: 'custom_single_band',
    bands: [
      {id: 'B3', scale: 10},
      {id: 'B8', scale: 10},
      {id: 'B11', scale: 20}
    ],
    region: region
  }));

print('Multi-band GeoTIFF file',
  img.getDownloadURL({
    bands: ['B3', 'B8', 'B11'],
    region: region,
    scale: 20,
    format: 'GEO_TIFF'
  }));

Python setup

See the Python Environment page for information on the Python API and using geemap for interactive development.

import ee
import geemap.core as geemap

"""Demonstrates the ee.Image.getDownloadURL method."""

import io
import requests
import ee


ee.Authenticate()
ee.Initialize()

# A Sentinel-2 surface reflectance image.
img = ee.Image('COPERNICUS/S2_SR/20210109T185751_20210109T185931_T10SEG')

# A small region within the image.
region = ee.Geometry.BBox(-122.0859, 37.0436, -122.0626, 37.0586)

# Image chunk as a NumPy structured array.
import numpy
url = img.getDownloadUrl({
    'bands': ['B3', 'B8', 'B11'],
    'region': region,
    'scale': 20,
    'format': 'NPY'
})
response = requests.get(url)
data = numpy.load(io.BytesIO(response.content))
print(data)
print(data.dtype)

# Single-band GeoTIFF files wrapped in a zip file.
url = img.getDownloadUrl({
    'name': 'single_band',
    'bands': ['B3', 'B8', 'B11'],
    'region': region
})
response = requests.get(url)
with open('single_band.zip', 'wb') as fd:
  fd.write(response.content)

# Multi-band GeoTIFF file wrapped in a zip file.
url = img.getDownloadUrl({
    'name': 'multi_band',
    'bands': ['B3', 'B8', 'B11'],
    'region': region,
    'scale': 20,
    'filePerBand': False
})
response = requests.get(url)
with open('multi_band.zip', 'wb') as fd:
  fd.write(response.content)

# Band-specific transformations.
url = img.getDownloadUrl({
    'name': 'custom_single_band',
    'bands': [
        {'id': 'B3', 'scale': 10},
        {'id': 'B8', 'scale': 10},
        {'id': 'B11', 'scale': 20}
    ],
    'region': region
})
response = requests.get(url)
with open('custom_single_band.zip', 'wb') as fd:
  fd.write(response.content)

# Multi-band GeoTIFF file.
url = img.getDownloadUrl({
    'bands': ['B3', 'B8', 'B11'],
    'region': region,
    'scale': 20,
    'format': 'GEO_TIFF'
})
response = requests.get(url)
with open('multi_band.tif', 'wb') as fd:
  fd.write(response.content)

Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4.0 License, and code samples are licensed under the Apache 2.0 License. For details, see the Google Developers Site Policies. Java is a registered trademark of Oracle and/or its affiliates.

Last updated 2024-02-20 UTC.

[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2024-02-20 UTC."],[[["`Image.getDownloadURL` provides a URL to download image data in GeoTIFF, NumPy, PNG or JPG formats."],["Request size is limited to 32 MB and grid dimension to 10000."],["Use `getThumbURL` for RGB visualizations in PNG and JPG formats."],["Specify download parameters like bands, region, scale, and format within the `params` object."],["The function returns a download URL or undefined if a callback is used."]]],["`Image.getDownloadURL` retrieves download URLs for image data in GeoTIFF or NumPy formats, with a 32 MB maximum size and 10,000 grid dimension limit. Parameters include specifying `name`, `bands`, `crs`, `crs_transform`, `dimensions`, `scale`, `region`, and `filePerBand`, and `format`. Formats can be ZIPPED_GEO_TIFF, GEO_TIFF, or NPY. The `getThumbURL` method is recommended for RGB formats. The method returns a download URL or is undefined if a callback is provided.\n"]]

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