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Download and crop/clip Sentinel and Landsat tiles for geolocations.

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Description

The geocropper Python package provides download and crop/clip functionality for Sentinel-1 (currently download only), Sentinel-2, Landsat-TM, Landsat-ETM and Landsat-8 products/tiles.

Requirements

  • Python 3.6
  • Anaconda
  • Copernicus Open Access Hub Account (see Usage/Configuration)
  • USGS Earth Resources Observation and Science (EROS) System Account (see Usage/Configuration)

Clone

Important: Use the option --recurse-submodules when cloning this repository. This includes the submodule lib/countries automatically.

git clone --recurse-submodules https://github.com/bart-lg/geocropper

Usage

Dependencies

To install all dependencies using conda:

conda env update -f env.yml

Configuration

Copy the file default-config.ini to user-config.ini and add your user credentials for the following platforms:

Python

Activate the conda environment:

conda activate env

Import package in python:

from geocropper import *

Using CSV

geocropper.import_all_csvs()

Place your CSV files in the inputCSV directory defined in the config file (default: 'data/inputCSV'). With this function all CSVs get imported and loaded. This means that for all geolocations the appropriate tiles get downloaded and cropped according to the request.

Using Geocropper class and functions


init(lat, lon)

Initialization of a Geocropper instance.

Parameter type description
lat float Latitude of the geolocation (WGS84 decimal).
lon float Longitude of the geolocation (WGS84 decimal).
geoc = geocropper.init(48, 16)



printPosition()

Prints current location attributes of Geocropper object to console.



downloadAndCrop(groupname, dateFrom, dateTo, platform, width, height, tileLimit = 0, **kwargs)

Download and crop/clip Sentinel or Landsat tiles to directories specified in the config file (default: 'data/bigTiles' and 'data/croppedTiles').

Parameter type description
groupname str Short name to group datasets (groupname is used for folder structure in cropped tiles)
dateFrom str Start date for search request in a chosen format.
The format must be recognizable by the dateutil lib.
In case of doubt use the format 'YYYY-MM-DD'.
dateTo str End date for search request in a chosen format.
The format must be recognizable by the dateutil lib.
In case of doubt use the format 'YYYY-MM-DD'.
platform str Choose between 'Sentinel-1', 'Sentinel-2', 'LANDSAT_TM_C1', 'LANDSAT_ETM_C1' and 'LANDSAT_8_C1'
width int Width of cropped rectangle. The rectangle surrounds the given geolocation (center point).
height int Heigth of cropped rectangle. The rectangle surrounds the given geolocation (center point).
tileLimit int (optional) Maximum number of tiles to be downloaded.
cloudcoverpercentage int (optional) Value between 0 and 100 for maximum cloud cover percentage.
producttype str (optional) Sentinel-1 products: RAW, SLC, GRD, OCN
      SLC: Single Look Complex
      GRD: Ground Range Detected
      OCN: Ocean
Sentinel-2 products: S2MSI1C, S2MSI2A, S2MSI2Ap
polarisationmode str (optional) Used for Sentinel-1 products:
Accepted entries are: HH, VV, HV, VH, HH+HV, VV+VH
sensoroperationalmode str (optional) Used for Sentinel-1 products:
Accepted entries are: SM, IW, EW, WV
      SM: Stripmap
      IW: Interferometric Wide Swath
      EW: Extra Wide Swath
      WV: Wave
swathidentifier str (optional) Used for Sentinel-1 products:
Accepted entries are: S1, S2, S3, S4, S5, S6, IW, IW1, IW2, IW3, EW, EW1, EW2, EW3, EW4, EW5
timeliness str (optional) Used for Sentinel-1 products:
      NRT: NRT-3h (Near Real Time)
      NTC: Fast-24h
geoc.downloadAndCrop(dateFrom = "20190701", dateTo = "20190731", platform = "Sentinel-2", width = 2000, height = 2000, tileLimit = 2, cloudcoverpercentage = 30)

Note: Sentinel-1 data get only downloaded and not cropped for now. Feel free to contribute to the project if you know how to crop Sentinel-1 data.



downloadSentinelData(dateFrom, dateTo, platform, poiId = 0, tileLimit = 0, **kwargs)

Download Sentinel tiles to directory specified in the config file (default: 'data/bigTiles').

Parameter type description
dateFrom str Start date for search request in a chosen format.
The format must be recognizable by the dateutil lib.
In case of doubt use the format 'YYYY-MM-DD'.
dateTo str End date for search request in a chosen format.
The format must be recognizable by the dateutil lib.
In case of doubt use the format 'YYYY-MM-DD'.
platform str Choose between 'Sentinel-1' and 'Sentinel-2'
poiId int (optional) ID of PointOfInterest record in sqlite database.
This is primarly used by other functions to create a connection between the database records.
tileLimit int (optional) Maximum number of tiles to be downloaded.
cloudcoverpercentage int (optional) Value between 0 and 100 for maximum cloud cover percentage.
producttype str (optional) Sentinel-1 products: RAW, SLC, GRD, OCN
      SLC: Single Look Complex
      GRD: Ground Range Detected
      OCN: Ocean
Sentinel-2 products: S2MSI1C, S2MSI2A, S2MSI2Ap
polarisationmode str (optional) Used for Sentinel-1 products:
Accepted entries are: HH, VV, HV, VH, HH+HV, VV+VH
sensoroperationalmode str (optional) Used for Sentinel-1 products:
Accepted entries are: SM, IW, EW, WV
      SM: Stripmap
      IW: Interferometric Wide Swath
      EW: Extra Wide Swath
      WV: Wave
swathidentifier str (optional) Used for Sentinel-1 products:
Accepted entries are: S1, S2, S3, S4, S5, S6, IW, IW1, IW2, IW3, EW, EW1, EW2, EW3, EW4, EW5
timeliness str (optional) Used for Sentinel-1 products:
      NRT: NRT-3h (Near Real Time)
      NTC: Fast-24h
geoc.downloadSentinelData(dateFrom = "20190701", dateTo = "20190731", platform = "Sentinel-2", tileLimit = 2, cloudcoverpercentage = 30)

Return value: number of found and downloaded tiles (int)



downloadLandsatData(dateFrom, dateTo, platform, poiId = 0, tileLimit = 0, **kwargs)

Download Landsat tiles to directory specified in the config file (default: 'data/bigTiles').

Parameter type description
dateFrom str Start date for search request in a chosen format.
The format must be recognizable by the dateutil lib.
In case of doubt use the format 'YYYY-MM-DD'.
dateTo str End date for search request in a chosen format.
The format must be recognizable by the dateutil lib.
In case of doubt use the format 'YYYY-MM-DD'.
platform str Choose between 'LANDSAT_TM_C1', 'LANDSAT_ETM_C1' and 'LANDSAT_8_C1'
poiId int (optional) ID of PointOfInterest record in sqlite database.
This is primarly used by other functions to create a connection between the database records.
tileLimit int (optional) Maximum number of tiles to be downloaded.
cloudcoverpercentage int (optional) Value between 0 and 100 for maximum cloud cover percentage.
geoc.downloadLandsatData(dateFrom = "20190701", dateTo = "20190731", platform = "LANDSAT_8_C1", tileLimit = 2, cloudcoverpercentage = 30)

CSV

Downloading and cropping tiles based on csv files with geolocations located in directory data/csvInput.

Tiles will be downloaded to data/bigTiles.
Cropped tiles will be saved in data/croppedTiles.
Loaded csv files will be moved to data/csvArchive.

CSV files can be imported through python or shell.

Activate the conda environment:

conda activate env

Run import using Make:

make importall

CSV Structure

default csv delimiter: ,
default csv quotechar: "

Mandatory fields

Fields Description
groupname Short name to group datasets.
(groupname is used for folder structure in cropped tiles)
lat Latitude of geolocation (WGS84 decimal).
lon Longitude of geolocation (WGS84 decimal).
dateFrom Start date for search request in a chosen format.
The format must be recognizable by the dateutil lib.
In case of doubt use the format 'YYYY-MM-DD'.
dateTo End date for search request in a chosen format.
The format must be recognizable by the dateutil lib.
In case of doubt use the format 'YYYY-MM-DD'.
platform Choose between 'Sentinel-1', 'Sentinel-2',
'LANDSAT_TM_C1', 'LANDSAT_ETM_C1' and 'LANDSAT_8_C1'.

Optional fields

Fields Description
width Width of cropped rectangle.
height Heigth of cropped rectangle.
tileLimit Maximum number of tiles to be downloaded.
description Description for the request to be stored in the sqlite database.
cloudcoverpercentage Value between 0 and 100 for maximum cloud cover percentage.
producttype Sentinel-1 products: RAW, SLC, GRD, OCN
      SLC: Single Look Complex
      GRD: Ground Range Detected
      OCN: Ocean
Sentinel-2 products: S2MSI1C, S2MSI2A, S2MSI2Ap
polarisationmode Used for Sentinel-1 products:
Accepted entries are: HH, VV, HV, VH, HH+HV, VV+VH
sensoroperationalmode Used for Sentinel-1 products:
Accepted entries are: SM, IW, EW, WV
      SM: Stripmap
      IW: Interferometric Wide Swath
      EW: Extra Wide Swath
      WV: Wave
swathidentifier Used for Sentinel-1 products:
Accepted entries are: S1, S2, S3, S4, S5, S6, IW, IW1, IW2, IW3, EW, EW1, EW2, EW3, EW4, EW5
timeliness Used for Sentinel-1 products:
      NRT: NRT-3h (Near Real Time)
      NTC: Fast-24h

The package omits all other field names.

Country determination

For automatic country determination the following tool is used: countries
Data for country borders obtained from: http://thematicmapping.org/downloads/world_borders.php

Acknowledgement

We gratefully acknowledge support from the European Research Council (“reFUEL” ERC2017-STG 758149).

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