geo-viewport
Turns a bounding box into a center point and zoom level for static maps. It works in Node.js and in browsers.
Share on XLicense: BSD-2-Clause
Overview
geo-viewport turns a bounding box, also called an extent, into a center point and zoom level, which is what static maps need. It works in Node.js and in browsers, either through browserify or a plain script tag that exposes a geoViewport object. The viewport method takes bounds and an image size in pixels and returns the center and zoom. The bounds method does the reverse and returns the extent for a given center, zoom and size.
Key features
- viewport() converts bounds and pixel size to center and zoom
- bounds() returns the extent for a center, zoom and size
- Runs in Node.js and in browsers
- Script tag exposes a geoViewport object
Best for
Developers building static map images or views that must fit a known bounding box.
- Upstream
- mapbox/geo-viewport
- Fork on GitHub
- Guo-astro/geo-viewport
- Upstream stars
- 197
- Category
- Maps and geospatial
- Language
- JavaScript
- License
- BSD-2-Clause
- Forked
- 2020-11-01
- Sync status
- In syncLast synced 2026-09-29
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