Class: Manipulation::Statistics

Inherits:
Object
  • Object
show all
Defined in:
lib/simple_trail/manipulation/statistics.rb

Instance Method Summary collapse

Constructor Details

#initialize(points) ⇒ Statistics

Returns a new instance of Statistics.



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# File 'lib/simple_trail/manipulation/statistics.rb', line 5

def initialize(points)
  @points = points
end

Instance Method Details

#ascent ⇒ Object 



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# File 'lib/simple_trail/manipulation/statistics.rb', line 25

def ascent
  (0..@points.size - 2).map do |i|
    ascent_calc(@points[i], @points[i + 1])
  end.inject(:+)
end

#ascent_calc(start, finish) ⇒ Object 



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# File 'lib/simple_trail/manipulation/statistics.rb', line 41

def ascent_calc(start, finish)
  [0, finish[:ele].to_i - start[:ele].to_i].max
end

#basic_statistics ⇒ Object 



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# File 'lib/simple_trail/manipulation/statistics.rb', line 9

def basic_statistics
  {
    distance: distance,
    ascent: ascent,
    descent: descent,
    time: time
  }
end

#descent ⇒ Object 



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# File 'lib/simple_trail/manipulation/statistics.rb', line 31

def descent
  (0..@points.size - 2).map do |i|
    descent_calc(@points[i], @points[i + 1])
  end.inject(:+)
end

#descent_calc(start, finish) ⇒ Object 



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# File 'lib/simple_trail/manipulation/statistics.rb', line 45

def descent_calc(start, finish)
  [0, start[:ele].to_i - finish[:ele].to_i].max
end

#distance ⇒ Object 



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# File 'lib/simple_trail/manipulation/statistics.rb', line 18

def distance
  latlng_points = @points.map { |p| Geokit::LatLng.new(p[:lat], p[:lon]) }
  (0..@points.size - 2).map do |i|
    latlng_points[i].distance_to(latlng_points[i + 1])
  end.inject(:+)
end

#time ⇒ Object 



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# File 'lib/simple_trail/manipulation/statistics.rb', line 37

def time
  Time.parse(@points.last[:time]) - Time.parse(@points.first[:time])
end