CODEWITHSUNDEEP
geospatial
RobM
RobM

Reputation: 835

finding distance in meters between 2 lattitude and longitude points

these are my 2 points how would I get a distance in meters between them?

52.33816422 -106.2828899 52.33816422 -106.2828634

all the convesions programms are looking for ddmm.mmmmmmm and dddmm.mmmmmmmm

Upvotes: 1

Views: 133

Answers (1)

kuwantum
kuwantum

Reputation: 314

def distance loc1, loc2
  rad_per_deg = Math::PI/180  # PI / 180
  rkm = 6371                  # Earth radius in kilometers
  rm = rkm * 1000             # Radius in meters

  dlat_rad = (loc2[0]-loc1[0]) * rad_per_deg  # Delta, converted to rad
  dlon_rad = (loc2[1]-loc1[1]) * rad_per_deg

  lat1_rad, lon1_rad = loc1.map {|i| i * rad_per_deg }
  lat2_rad, lon2_rad = loc2.map {|i| i * rad_per_deg }

  a = Math.sin(dlat_rad/2)**2 + Math.cos(lat1_rad) * Math.cos(lat2_rad) * Math.sin(dlon_rad/2)**2
  c = 2 * Math::atan2(Math::sqrt(a), Math::sqrt(1-a))

  rm * c # Delta in meters
end

puts distance [52.33816422, -106.2828899],[52.33816422, -106.2828634]
# Will return the answer

From here: How to calculate the distance between two GPS coordinates without using Google Maps API?

EDIT: Updated with your coordinates

Upvotes: 1

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