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." .<br>The code is integrated into a custom toolbox within the ArcMap software, offering the following functionalities:<br>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.<br>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.<br>Supported Environment: The code operates in a Python 2.7 environment, integrated with the ArcGIS platform.

本研究题为《基于SDGSAT-1 GLI数据推进建筑楼层级夜间光照暴露评估》，本文提供支撑该项研究的FLEI计算代码及配套样本数据。该代码集成于ArcMap软件的自定义工具箱内，具备以下功能：<br>1. 数据导入与预处理：支持用户导入SDGSAT-1 GLI数据，并执行必要的预处理步骤以合成单通道灰度图像，为FLEI值的计算提供支撑。<br>2. FLEI值计算：本代码可基于SDGSAT-1 GLI数据、数字高程模型（Digital Elevation Model）与建筑轮廓数据，为各建筑楼层计算FLEI值。通过该FLEI指数，可精准获取各楼层的夜间光照辐射暴露情况，实现建筑楼层级光污染的量化评估。<br>运行环境：本代码基于Python 2.7环境开发，并集成于ArcGIS平台。