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Utility Function to Acquire Sentinel-2 Imagery using openEO

Source: R/acquire_utilities.R
acquire_openeo.Rd

This non-exported function uses the openeo package to send a request to Copernicus DataSpace, and prepare the products. Called by optram_acquire_s2

Usage

acquire_openeo(
  aoi,
  from_date,
  to_date,
  output_dir = tempdir(),
  scale_factor = 10000
)

Arguments

aoi,

sf object, POLYGON or MULTIPOLYGON of area of interest

from_date,

string, represents start of date range, formatted as "YYYY-MM-DD"

to_date,

string, end of date range, formatted as "YYYY-MM-DD"

output_dir,

string, path to save downloaded, and processed imagery

scale_factor,

integer, scaling factor for EO data source default 10000 , to scale Sentinel-2 15 bit DN to range (0, 1)

Value

list of BOA files

Note

This function utilizes the openeo package. Instructions for the login process: First of all, to authenticate your account on the backend of the Copernicus Data Space Ecosystem, it is necessary for you to complete the registration process. Follow these instructions for registration: https://documentation.dataspace.copernicus.eu/Registration.html After you have registered and installed the openeo package, you can run the acquire_openeo function. During the process of connecting to the server and logging in, you need to follow these steps:

  1. When the message "Press to proceed:" appears in the console, press enter.

  2. When prompted with 'Copy CTGB-UGFU and paste when requested by the browser' in the console, it may appear but can be ignored, as it is related to an older version of the openeo package.

  3. Calling this method opens your system web browser, with which you can authenticate yourself on the back-end authentication system.

  4. After that, the website will give you instructions to go back to the R client, where your connection has logged your account in. This means that every call that comes after that via the connection variable is executed by your user account.

  5. You will be redirected to https://identity.dataspace.copernicus.eu/. Ensure you have an account and are logged in. You will be required to grant access - press "yes".

Examples