.. _v364:

FORCE v. 3.6.4
==============

Release: 17.03.2021

- **General changes**

  - Docker (1/2): 
    FORCE is now built from a base image that contains all the installation (davidfrantz/base_image).
    This makes building and testing way faster.

  - Docker (2/2): 
    Fabian Lehmann considerably reduced the size of the Docker image.


- **FORCE HIGHER LEVEL**

  - in force-higher-level, LSM sub-module: 
    Franz Schug added a new metric: ``ARE``, which yields the pixel area of the foreground class.
    Note: this value is capped at 32767.

  - in force-higher-level, TSA sub-module:
    A segmentation fault occured when using the SAVI Index.
    This is now fixed.
    Thanks for Janos Steiner for reporting this issue.

  - in force-higher-level, TSA sub-module:
    Implemented the new kNDVI following Camps-Valls et al. 2021.
    Use with ``INDEX = kNDVI``.
    Sigma is fixed to 0.5*(NIR+RED).

- **FORCE WVDB**

  - We updated the ready-to-use, global water vapor database. 
    The dataset is comprised of daily global water vapor data for February 2000 to December 2020 for each land-intersecting Worldwide Reference System 2 (WRS-2) scene, as well as a monthly climatology that can be used if no daily value is available. 
    The dataset is freely available at `<https://doi.org/10.5281/zenodo.4468700>`_. 
    This dataset may relieve you of the burden to generate the water vapor database on your own.

- **FORCE L2PS**

  - $BINDIR is now dynamically evaluated on runtime. 
    For users, this should not make a difference.