Class: V900Track

Inherits:
Object
  • Object
show all
Defined in:
lib/columbus3/v900track/v900track.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(hash) ⇒ V900Track

Returns a new instance of V900Track.



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# File 'lib/columbus3/v900track/v900track.rb', line 9

def initialize hash 
  @filename = hash[:filename]
  if hash[:empty]
    @data = []
  else
    read filename
  end
end

Instance Attribute Details

#filename ⇒ Object (readonly)

Returns the value of attribute filename.



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# File 'lib/columbus3/v900track/v900track.rb', line 7

def filename
  @filename
end

Instance Method Details

#[](i) ⇒ Object 



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# File 'lib/columbus3/v900track/v900track.rb', line 58

def [](i)
  @data[i]
end

#add(v900_waypoint) ⇒ Object 



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# File 'lib/columbus3/v900track/v900track.rb', line 27

def add v900_waypoint
  @data << v900_waypoint
end

#bearing ⇒ Object 



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# File 'lib/columbus3/v900track/v900track.rb', line 124

def bearing
  Geocoder::Calculations.compass_point(Geocoder::Calculations.bearing_between(first.lat_lon, last.lat_lon))
end

#distance ⇒ Object 



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# File 'lib/columbus3/v900track/v900track.rb', line 132

def distance
  distance = 0
  range.each do |i|
    distance += Geocoder::Calculations.distance_between(self[i].lat_lon, self[i-1].lat_lon, :units => :km)
  end
  distance
end

#distance_aerial ⇒ Object 



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# File 'lib/columbus3/v900track/v900track.rb', line 128

def distance_aerial
  Geocoder::Calculations.distance_between(first.lat_lon, last.lat_lon, :units => :km)
end

#duration ⇒ Object 



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# File 'lib/columbus3/v900track/v900track.rb', line 80

def duration
  last.time - first.time
end

#each(&block) ⇒ Object

stackoverflow.com/questions/19226821/iterator-array-each-as-return-value-of-method-in-ruby



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# File 'lib/columbus3/v900track/v900track.rb', line 50

def each(&block)
  @data.each(&block)
end

#end_date ⇒ Object 



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# File 'lib/columbus3/v900track/v900track.rb', line 76

def end_date
  last.time
end

#end_location ⇒ Object 



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# File 'lib/columbus3/v900track/v900track.rb', line 120

def end_location
  Geocoder.address(last.lat_lon)
end

#first ⇒ Object 



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# File 'lib/columbus3/v900track/v900track.rb', line 62

def first
  @data[0]
end

#last ⇒ Object 



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# File 'lib/columbus3/v900track/v900track.rb', line 66

def last
  @data[size - 1]
end

#max_height ⇒ Object 



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# File 'lib/columbus3/v900track/v900track.rb', line 96

def max_height
  get :>, :height
end

#max_height_idx ⇒ Object 



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# File 'lib/columbus3/v900track/v900track.rb', line 112

def max_height_idx
  get_idx :>, :height
end

#max_speed ⇒ Object 



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# File 'lib/columbus3/v900track/v900track.rb', line 88

def max_speed
  get :>, :speed
end

#max_speed_idx ⇒ Object 



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# File 'lib/columbus3/v900track/v900track.rb', line 104

def max_speed_idx
  get_idx :>, :speed
end

#metadata ⇒ Object

return a hash with all the metadata … it could be a nice metamethod, creating a key for each public methods



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# File 'lib/columbus3/v900track/v900track.rb', line 142

def metadata
  metadata = Hash.new

  [:start_date, :end_date, :duration, :size, :start_location, :end_location, :min_speed, :max_speed, :min_height, :max_height, :bearing, :distance, :distance_aerial].map { |x| metadata[x] = self.send(x) }

  metadata
end

#min_height ⇒ Object 



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# File 'lib/columbus3/v900track/v900track.rb', line 92

def min_height
  get :<, :height
end

#min_height_idx ⇒ Object 



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# File 'lib/columbus3/v900track/v900track.rb', line 108

def min_height_idx
  get_idx :<, :height
end

#min_speed ⇒ Object 



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# File 'lib/columbus3/v900track/v900track.rb', line 84

def min_speed
  get :<, :speed
end

#min_speed_idx ⇒ Object 



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# File 'lib/columbus3/v900track/v900track.rb', line 100

def min_speed_idx
  get_idx :<, :speed
end

#points ⇒ Object

an alias for size



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# File 'lib/columbus3/v900track/v900track.rb', line 36

def points
  @data.size
end

#range ⇒ Object 



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# File 'lib/columbus3/v900track/v900track.rb', line 40

def range
  (0..self.size - 1)
end

#read(filename) ⇒ Object 



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# File 'lib/columbus3/v900track/v900track.rb', line 18

def read filename
  @filename = filename
  @data = CSV::read(filename, headers: true).each.map { |item| V900Waypoint.new(item) }
end

#save ⇒ Object 



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# File 'lib/columbus3/v900track/v900track.rb', line 23

def save
  File.open(@filename, 'w') {|f| f.write(to_s) }
end

#size ⇒ Object 



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# File 'lib/columbus3/v900track/v900track.rb', line 31

def size
  @data.size
end

#start_date ⇒ Object

statistics



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# File 'lib/columbus3/v900track/v900track.rb', line 72

def start_date
  first.time
end

#start_location ⇒ Object 



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# File 'lib/columbus3/v900track/v900track.rb', line 116

def start_location
  Geocoder.address(first.lat_lon)
end

#to_a ⇒ Object

to enumerate (till I can solve the each issue)



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# File 'lib/columbus3/v900track/v900track.rb', line 45

def to_a
  @data
end

#to_s ⇒ Object

a slightly more robust implementation calls data in the same order in which the header is printed



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# File 'lib/columbus3/v900track/v900track.rb', line 152

def to_s
  string = "INDEX,TAG,DATE,TIME,LATITUDE N/S,LONGITUDE E/W,HEIGHT,SPEED,HEADING,VOX\n"
  @data.each do |data|
    string << data.to_s + "\n"
  end
  string
end