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Search and download Landsat scenes from EarthExplorer

Project description

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Description

CLI Demo

The landsatxplore Python package provides an interface to the EarthExplorer portal to search and download Landsat Collections scenes through a command-line interface or a Python API.

The following datasets are supported:

Dataset Name Dataset ID
Landsat 5 TM Collection 1 Level 1 landsat_tm_c1
Landsat 5 TM Collection 2 Level 1 landsat_tm_c2_l1
Landsat 5 TM Collection 2 Level 2 landsat_tm_c2_l2
Landsat 7 ETM+ Collection 1 Level 1 landsat_etm_c1
Landsat 7 ETM+ Collection 2 Level 1 landsat_etm_c2_l1
Landsat 7 ETM+ Collection 2 Level 2 landsat_etm_c2_l2
Landsat 8 Collection 1 Level 1 landsat_8_c1
Landsat 8 Collection 2 Level 1 landsat_ot_c2_l1
Landsat 8 Collection 2 Level 2 landsat_ot_c2_l2
Sentinel 2A sentinel_2a

Quick start

Searching for Landsat 5 TM scenes that contains the location (12.53, -1.53) acquired during the year 1995.

landsatxplore search --dataset LANDSAT_TM_C1 --location 12.53 -1.53 \
    --start 1995-01-01 --end 1995-12-31

Search for Landsat 7 ETM scenes in Brussels with less than 5% of clouds. Save the returned results in a .csv file.

landsatxplore search --dataset LANDSAT_ETM_C1 \
    --location 50.83 4.38 --clouds 5 > results.csv

Downloading three Landsat scenes from different datasets in the current directory.

landsatxplore download LT51960471995178MPS00 LC80390222013076EDC00 LC82150682015350LGN01

To use the package, Earth Explorer credentials are required (registration).

Installation

The package can be installed using pip.

pip install landsatxplore

Usage

landsatxplore can be used both through its command-line interface and as a Python module.

Command-line interface

landsatxplore --help
Usage: landsatxplore [OPTIONS] COMMAND [ARGS]...

Options:
  --help  Show this message and exit.

Commands:
  download  Download one or several Landsat scenes.
  search    Search for Landsat scenes.

Credentials

Credentials for the Earth Explorer portal can be obtained here.

--username and --password can be provided as command-line options or as environment variables:

export LANDSATXPLORE_USERNAME=<your_username>
export LANDSATXPLORE_PASSWORD=<your_password>

Searching

landsatxplore search --help
Usage: landsatxplore search [OPTIONS]

  Search for Landsat scenes.

Options:
  -u, --username TEXT             EarthExplorer username.
  -p, --password TEXT             EarthExplorer password.
  -d, --dataset [landsat_tm_c1|landsat_etm_c1|landsat_8_c1|landsat_tm_c2_l1|landsat_tm_c2_l2|landsat_etm_c2_l1|landsat_etm_c2_l2|landsat_ot_c2_l1|landsat_ot_c2_l2|sentinel_2a]
                                  Landsat data set.
  -l, --location FLOAT...         Point of interest (latitude, longitude).
  -b, --bbox FLOAT...             Bounding box (xmin, ymin, xmax, ymax).
  -c, --clouds INTEGER            Max. cloud cover (1-100).
  -s, --start TEXT                Start date (YYYY-MM-DD).
  -e, --end TEXT                  End date (YYYY-MM-DD).
  -o, --output [scene_id|product_id|json|csv]
                                  Output format.
  -m, --limit INTEGER             Max. results returned.
  --help                          Show this message and exit.

Downloading

landsatxplore download --help
Usage: landsatxplore download [OPTIONS] [SCENES]...

  Download one or several Landsat scenes.

Options:
  -u, --username TEXT    EarthExplorer username.
  -p, --password TEXT    EarthExplorer password.
  -d, --dataset TEXT     Dataset.
  -o, --output PATH      Output directory.
  -t, --timeout INTEGER  Download timeout in seconds.
  --skip
  --help                 Show this message and exit.

If the --dataset is not provided, the dataset is automatically guessed from the scene identifier. Note that only the newer Landsat Product Identifiers contain information related to collection number and processing level. To download Landsat Collection 2 products, use Product IDs or set the --dataset option correctly.

API

EarthExplorer API

landsatxplore provides an interface to the Earth Explorer JSON API. Please refer to the official (documentation) for possible request codes and parameters.

Basic usage

from landsatxplore.api import API

# Initialize a new API instance and get an access key
api = API(username, password)

# Perform a request. Results are returned in a dictionnary
response = api.request(
    '<request_endpoint>',
    params={
        "param_1": value_1,
        "param_2": value_2
    }
)

# Log out
api.logout()

Please refer to the official JSON API Reference for a list of all available requests.

Searching for scenes

import json
from landsatxplore.api import API

# Initialize a new API instance and get an access key
api = API(username, password)

# Search for Landsat TM scenes
scenes = api.search(
    dataset='landsat_tm_c1',
    latitude=50.85,
    longitude=-4.35,
    start_date='1995-01-01',
    end_date='1995-10-01',
    max_cloud_cover=10
)

print(f"{len(scenes)} scenes found.")

# Process the result
for scene in scenes:
    print(scene['acquisition_date'])
    # Write scene footprints to disk
    fname = f"{scene['landsat_product_id']}.geojson"
    with open(fname, "w") as f:
        json.dump(scene['spatialCoverage'], f)

api.logout()

Output:

6 scenes found.
1995/08/19
1995/08/19
1995/08/12
1995/08/03
1995/08/03
1995/02/08

Downloading scenes

from landsatxplore.earthexplorer import EarthExplorer

ee = EarthExplorer(username, password)

ee.download(scene_id='LT51960471995178MPS00', output_dir='./data')

ee.logout()

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