Floor Light Exposure Index

We provide the FLEI calculation code and sample data that underpin our study titled "Advancing building floor-level nighttime light exposure assessment using SDGSAT-1 GLI data." .The code is integrated into a custom toolbox within the ArcMap software, offering the following functionalities:1. Data Import and Processing: This feature allows users to import SDGSAT-1 GLI data and perform necessary preprocessing steps to synthesize single-channel grayscale images, facilitating the computation of FLEI values.2. FLEI Value Calculation: The code is capable of calculating the FLEI values for each building floor based on SDGSAT-1 GLI data, along with digital elevation models and building footprint data. Through the FLEI index, we can gain detailed insights into the nighttime light radiation exposure at each floor level, enabling a quantification and assessment of light pollution at the building floor level.Supported Environment: The code operates in a Python 2.7 environment, integrated with the ArcGIS platform.