Left: 500m buffer around a focus field with in-buffer neighbors highlighted (green) — the neighbor_count_500m feature. Right: pairwise distance matrix heatmap for 5 ...

In this study, we present a building-level functional map of China, covering 110 million individual buildings across 109 cities using 69 terabytes of multi-modal satellite imagery. The national-scale ...

I spent decades dealing with spatial data in a municipal highway department before I ever heard the word "columnar." When I went back to school for my GIS degree, GeoJSON was everywhere. It still is.

Data was split into CSV files by vessel ID, minimising file size and memory requirements while enabling independent processing of each vessel track. This approach increased storage needs, as the ...

How Python Classes Become Database Tables One of the most powerful concepts in Django is how Python classes (Models) are translated into real database tables — including relationships between tables.

Open File Viewer 不是单纯做 PDF 预览，也不是又封装一个图片预览组件，而是一个面向 Web 产品的前端文件预览 SDK。 前端做文件预览，基本都踩过坑。 PDF 一个库，Word 一个库，Excel 一个方案，图片视频自己写，压缩包直接下载，复杂一点的 CAD、3D、GIS 文件，很多 ...