Development

Trends.Earth is free and open-source software, licensed under the GNU General Public License, version 2.0 or later.

There are a number of components to the Trends.Earth tool. The first is a QGIS plugin supporting calculation of indicators, access to raw data, reporting, and production of print maps . The code for the plugin, and further instructions on installing it if you want to modify the code, are in trends.earth github repository.

The Trends.Earth QGIS plugin is supported by a number of different Python scripts that allow calculation of the various indicators on Google Earth Engine (GEE). These scripts sit in the “gee” subfolder of that github repository.

The GEE scripts are supported by the landdegradation Python module, which includes code for processing inputs and outputs for the plugin, as well as other common functions supporting calculation of NDVI integrals, statistical significance, and other shared code. The code for this module is available in the landdegradation repository on Github.