GeoPosition

A simple utility to allow you to convert DMS (Degrees, Minutes, Seconds) to a latitude and longitude. The initial driver for this utility was working on an application that took Geo Position information from EXIF data and converted it to lat/lon for use in both the database storage and querying Google's API.

Add this line to your application's Gemfile:

gem 'geo_position'

And then execute:

$ bundle

Or install it yourself as:

$ gem install geo_position

I prefer smaller components that can be put together in different ways.

Currently, if given arguments other than something numeric, then the argument will be coerced to a float. If it cannot be coerced to a float, it will raise an exception.

For the conversions, there are some expectations:

• For latitude, you must provide an argument within the bounds of -90 and 90.
• For longitude, you must provide an argument within the bounds of -180 and 180.

You can see more information in the objects and errors themselves.

Usage is simple:

# This can be any positive number between 0 and 360. It will be coerced to a float and absoluted.
degrees = 12

# Minutes
minutes = 3

# Seconds
seconds = 42.42

# Direction must be one of N, S, E, or W
direction = 'w'

conversion = GeoPosition::Conversion::Dms.new(degrees, minutes, seconds, direction)

conversion.to_s
=> "12 deg 3' 42.42\" W"

conversion.to_f
=> -12.061783333333333

latitude = "70.4947"

conversion = GeoPosition::Conversion::Latitude.new(latitude)

conversion.to_s
=> "70 deg 29' 40\" N"

longitude = "-157.441"

conversion = GeoPosition::Conversion::Longitude.new(longitude)

conversion.to_s
=> "157 deg 26' 27\" W"

dms_string = "77 deg 8 42.00 W"

parser = GeoPosition::Parser::Dms.new(dms_string)

parser.degrees
=> 77

parser.minutes
=> 8

parser.seconds
=> 42.0

parser.direction
=> "W"

parser.to_hash
=> {:degrees=>77, :minutes=>8, :seconds=>42.0, :direction=>"W"}

• Add a command line component

1. Fork it
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create new Pull Request