EvilTransform

Transform coordinate between earth(WGS-84) and mars in china(GCJ-02)

  geo = EvilTransform.new_geo(31.278648,120.601099)
  EvilTransform.gcjtowgs(geo)

  # or 

  EvilTransform.new_geo(31.278648,120.601099) |> EvilTransform.gcjtowgs()

Installation

If available in Hex, the package can be installed by adding evil_transform to your list of dependencies in mix.exs:

def deps do
  [
    {:evil_transform, "~> 0.1.0"}
  ]
end

Documentation can be generated with ExDoc and published on HexDocs. Once published, the docs can be found at https://hexdocs.pm/evil_transform.

Algorithm Sources:

• https://on4wp7.codeplex.com/SourceControl/changeset/view/21483#353936
• http://emq.googlecode.com/svn/emq/src/Algorithm/Coords/Converter.java

References:

• https://github.com/googollee/eviltransform
• http://blog.csdn.net/coolypf/article/details/8686588
• http://cxzy.people.com.cn/GB/196034/14908095.html