projection.BAIDU

projection.BAIDU is the projection used by Baidu Map, mixing in projection.Common, measurer.BaiduSphere, and the internal Mercator/coordinate-conversion methods. It converts between Baidu Mercator planar coordinates (MC) and lng/lat (LL). It is an object mixin with no standalone constructor.

import { projection } from "maptalks";

const p = projection.BAIDU.project([116.404, 39.915]); // Baidu Mercator coordinates

Properties / Static Methods

• code: string — The projection code, 'BAIDU'.
• EARTHRADIUS — The Earth radius, 6370996.81.
• MCBAND / LLBAND / MC2LL / LL2MC — Coefficient tables used for Baidu coordinate conversion.

Methods

• project(p, out?): Coordinate — Convert lng/lat into Baidu Mercator coordinates (internally calls convertLL2MC).
• unproject(p, out?): Coordinate — Convert Baidu Mercator coordinates back to lng/lat (internally calls convertMC2LL).
• convertLL2MC / convertMC2LL / convertor — Lower-level coordinate-conversion methods.
• Additionally inherits projection / batch / sphere methods from projection.Common.