Beyond CoordinatesTag: GIS
All the articles with the tag "GIS".
Web Gaussian Splatting: Cesium 3D Tiles vs. SparkJS 2.0
Updated:A technical comparison of Cesium's standards-based 3D Tiles pipeline and SparkJS 2.0's renderer-native, paged Gaussian-splat runtime.
How Mapbox Renders 3D Interchanges
Updated:An analysis of Mapbox's lane-level HD road data, elevation features, styles, and rendering pipeline for 3D interchanges.
Quadtrees and Collision Detection
Updated:Designing a quadtree for spatial partitioning, range queries, and collision detection, with implementation tradeoffs in C++.
Polygon Triangulation on a Sphere vs. a Plane
Updated:Why planar triangulation distorts polygons on a globe, and how subdivision and spherical interpolation improve the result.
How Assuming the Earth Is Flat Speeds Up deck.gl Rendering
Updated:How deck.gl balances Web Mercator projection cost and WebGL floating-point precision with an automatic offset coordinate system.
Spatial Search Algorithms: Querying Millions of Points Instantly
Updated:A practical comparison of spatial indexing strategies for efficient point and geometry queries at large scale.
Publishing Mapbox-Compatible Vector Tiles with GeoServer
Updated:A practical walkthrough for publishing a Mapbox-compatible vector tile service with GeoServer.
The Lifecycle of a Mapbox Vector Tile
Updated:How Mapbox GL JS requests, parses, prepares, uploads, and renders vector tiles across the event loop, workers, and render loop.
Implementing Building Shadows in Mapbox
Updated:Implementing time- and location-based building shadows in Mapbox by adapting Threebox to Mapbox GL JS v2.
Designing a Cultural Revolution-era Map
Updated:A cartographic experiment combining historical Beijing street names with period-inspired typography, colors, symbols, and map styling.
Visualizing Train Operations at Shanghai Hongqiao Railway Station
Updated:A map-based visualization of individual trains, cars, platforms, and routes around Shanghai Hongqiao Railway Station.
Generating 3D Road Interchanges from OSM Data
Updated:Using OSM layer ordering, slope constraints, and linear programming to infer road elevations for 3D interchanges.
Implementing Kriging Interpolation, Part 1: The Mathematics
Updated:The semivariogram, model fitting, covariance matrix, and weighted estimation behind ordinary kriging.
Implementing Kriging Interpolation, Part 2: C# Implementation
Updated:Implementing kriging interpolation in C# with Math.NET, semivariogram fitting, and matrix operations.
A Simple Way to Correct Raster Map Offsets in China
Updated:Approximately correcting GCJ-offset raster tiles by transforming the requested tile extent before retrieving imagery.
