Graticule 是一个地理编码 API,用于查找地址坐标并进行距离计算,支持许多流行的 API。
grat·i·cule |ˈgratəˌkyoōl|
Navigation. a network of parallels and meridians on a map or chart.
Graticule is a geocoding API for looking up address coordinates and performing distance calculations. It supports many popular APIs:
gem install graticule
There is a companion Rails plugin called acts_as_geocodable that makes geocoding seem like magic.
Graticule exposes to main APIs: location search and distance calculations. Graticule also provides a command line utility.
require 'rubygems'
require 'graticule'
geocoder = Graticule.service(:google).new "api_key"
location = geocoder.locate("61 East 9th Street, Holland, MI")
For specific service documentation, please visit the documentation.
Graticule includes 3 different distance formulas, Spherical (simplest but least accurate), Vincenty (most accurate and most complicated), and Haversine (somewhere inbetween). The default is Haversine. There are two ways to calculate the distance between two points.
First is Location#distance_to:
holland = geocoder.locate("Holland, MI")
chicago = geocoder.locate("Chicago, IL")
holland.distance_to(chicago, :formula => :haversine) # or :spherical or :vincenty
# => 101.997458788177
You can also use the formula classes directly:
Graticule::Distance::Haversine.distance(holland, chicago)
# => 101.997458788177
All units are miles by default, but you can switch to kilometers with the units option
holland.distance_to(chicago, :units => :kilometers)
#
Graticule::Distance::Haversine.distance(holland, chicago, :kilometers)
Graticule includes a command line interface (CLI). The CLI does not currently support all of the implemented services.
$ geocode -s google -a [api_key] Washington, DC
Washington, DC US
latitude: 38.895222, longitude: -77.036758
In the spirit of free software, everyone is encouraged to help improve this project.
Here are some ways you can contribute:
We use the GitHub issue tracker to track bugs and features. Before submitting a bug report or feature request, check to make sure it hasn't already been submitted. When submitting a bug report, please include a Gist that includes a stack trace and any details that may be necessary to reproduce the bug, including your gem version, Ruby version, and operating system.
rake. If your changes are not 100% covered and passing, go back to step 4.暂无开放 Issues，或尚未同步最近议题。