Geographic Coordinate System Transformations
Spatial Reference SystemsWGS-84: The standard geodetic reference system used globally. It serves as the foundation for GPS and is adopted by international mapping platforms like Google Maps.GCJ-02: Often referred to as the Mars coordinate system. It is an obfuscated version of WGS-84 implemented for regulatory compliance, utilized by services s ...
Posted on Sat, 23 May 2026 21:24:11 +0000 by Allen4172
Implementing Dynamic Visual Effects for Cesium Entities using CallbackProperty
1. Creating a Pulsing Point Entity
The following example demonstrates how to make a point entity flash by oscillating the alpha channel of its color. We define a state variable to track the current opacity level and a directional flag to switch between fading in and out.
function createPulsingPoint() {
let currentOpacity = 1.0;
let isFa ...
Posted on Sun, 17 May 2026 05:24:12 +0000 by red-x
Migrating Geospatial Visualizations from Basemap to Cartopy in Python
Legacy geospatial plotting workflows frequently depend on Basemap, which encounters severe compilation failures on modern macOS architectures and has been official deprecated. Switching to Cartopy eliminates these dependency conflicts while delivering a projection-aware API that integrates natively with Matplotlib axes.
The migration requires s ...
Posted on Sun, 10 May 2026 22:11:56 +0000 by allworknoplay