https://github.com/cyang-kth/xyconvert

Converting xy coordinates between WGS-84, GCJ-02 and BD-09 system
https://github.com/cyang-kth/xyconvert

bd09 coordinate-conversion gcj02 gps numpy wgs84 xy

Last synced: about 2 months ago
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Converting xy coordinates between WGS-84, GCJ-02 and BD-09 system

• Host: GitHub
• URL: https://github.com/cyang-kth/xyconvert
• Owner: cyang-kth
• License: mit
• Created: 2020-11-16T00:52:41.000Z (about 4 years ago)
• Default Branch: master
• Last Pushed: 2020-11-16T15:04:33.000Z (about 4 years ago)
• Last Synced: 2024-10-13T19:41:59.982Z (2 months ago)
• Topics: bd09, coordinate-conversion, gcj02, gps, numpy, wgs84, xy
• Language: Python
• Homepage: https://pypi.org/project/xyconvert/
• Size: 5.86 KB
• Stars: 18
• Watchers: 2
• Forks: 5
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE.txt

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README

        
### xyconvert

This is a python package for converting xy coordinates (in lng,lat order) in numpy array between WGS-84, GCJ-02 and BD-09 system.

The conversion in numpy is much more efficient (50-70 times speedup) compared with previous Python implementations such as [eviltransform](https://github.com/googollee/eviltransform) and [coordTransform_py](https://github.com/wandergis/coordTransform_py) that convert only a single point at each call.

### Install the package

```bash

pip install xyconvert

```

### Usage

```python

from xyconvert import gcj2wgs

import numpy as np

gcj_xy = np.asarray([[104.07008157,  30.73199687],

       [104.07008159,  30.73177709],

       [104.06999188,  30.73147758]])

wgs_xy = gcj2wgs(gcj_xy)

print wgs_xy

'''

[[104.06756309  30.73437796]

 [104.06756312  30.73415829]

 [104.06747357  30.73385904]]

'''

```

### Reference

The code is partly copied/modified from https://github.com/Argons/nextlocation and https://github.com/wandergis/coordTransform_py.