Module: GeoUnits::Maps::Earth

Extended by:
Earth
Included in:
Earth
Defined in:
lib/geo_units/maps/earth.rb

Instance Method Summary collapse

Instance Method Details

#distance_per_latitude_degree ⇒ Object

from mongoid-geo, as suggested by niedhui :)



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# File 'lib/geo_units/maps/earth.rb', line 5

def distance_per_latitude_degree
{
  :feet       => 364491.8,
  :meters     => 111170,
  :kilometers => 111.17,
  :miles      => 69.407,
  :degrees    => 1
}
end

#latitude_degrees(unit = :miles) ⇒ Object 



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# File 'lib/geo_units/maps/earth.rb', line 42

def latitude_degrees unit = :miles
  radius[unit] / distance_per_latitude_degree[unit]
end

#major_axis_radius ⇒ Object 



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# File 'lib/geo_units/maps/earth.rb', line 24

def major_axis_radius
  {
  :miles      => 3963.19059,
  :kilometers => 6378.137,
  :meters     => 6378137,
  :feet       => 20925646.36
  }
end

#minor_axis_radius ⇒ Object 



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# File 'lib/geo_units/maps/earth.rb', line 33

def minor_axis_radius
  {
  :kilometers => 6356.7523142,
  :miles      => 3949.90276,
  :meters     => 6356752.3142,
  :feet       => 20855486.627
  }
end

#radius ⇒ Object 



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# File 'lib/geo_units/maps/earth.rb', line 15

def radius
  {
  :miles      => 3963.1676,
  :kilometers => 6378.135,
  :meters     => 6378135,
  :feet       => 20925639.8
  }
end