gps-transf/README.md

This is A Map coordinate conversion tool.

# gps-transf

This is A Map coordinate conversion tool.

The coordinate conversion tool provides the conversion between Baidu coordinate (bd09), National Survey Bureau coordinate (Mars coordinate, gcj02) and WGS84 coordinate system.

## How use

### node.js
```javascript
let gps=require('gps-transf');
console.log(gps.bd09ToGcj02(116.228345,39.944812));
```

### brower

```javascript
import gps from 'gps-transf';
console.log(gps.bd09ToGcj02(116.228345,39.944812));
```

### APIs

```javascript
    //Transformation between Baidu coordinate system (bd-09) and Mars coordinate system (gcj-02)
    bd09togcj02(lon,lat):Array[lon,lat];

    //Transformation between Mars coordinate system (gcj-02) and Baidu coordinate system (bd-09)
    gcj02ToBd09(lon,lat):Array[lon,lat];
    
    //WGS84 to GCj02
    wgs84ToGcj02(lon,lat):Array[lon,lat];
    
    //GCJ02 to WGS84
    wgcj02ToWgs84(lon,lat):Array[lon,lat];
    
```