MaRGEE: Move and Rotate Google Earth Elements
| Autor: | Mladen M. Dordevic, Steven J. Whitmeyer |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Deprecation
Digital mapping Computer science business.industry computer.software_genre JavaScript Visualization law.invention Haversine formula law Computer graphics (images) Web application Plug-in Computers in Earth Sciences Mercator projection business computer Information Systems computer.programming_language |
| Zdroj: | Computers & Geosciences. 85:1-9 |
| ISSN: | 0098-3004 |
| Popis: | Google Earth is recognized as a highly effective visualization tool for geospatial information. However, there remain serious limitations that have hindered its acceptance as a tool for research and education in the geosciences. One significant limitation is the inability to translate or rotate geometrical elements on the Google Earth virtual globe. Here we present a new JavaScript web application to “Move and Rotate Google Earth Elements” (MaRGEE). MaRGEE includes tools to simplify, translate, and rotate elements, add intermediate steps to a transposition, and batch process multiple transpositions. The transposition algorithm uses spherical geometry calculations, such as the haversine formula, to accurately reposition groups of points, paths, and polygons on the Google Earth globe without distortion. Due to the imminent deprecation of the Google Earth API and browser plugin, MaRGEE uses a Google Maps interface to facilitate and illustrate the transpositions. However, the inherent spatial distortions that result from the Google Maps Web Mercator projection are not apparent once the transposed elements are saved as a KML file and opened in Google Earth. Potential applications of the MaRGEE toolkit include tectonic reconstructions, the movements of glaciers or thrust sheets, and time-based animations of other large- and small-scale geologic processes. |
| Databáze: | OpenAIRE |
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