Class: Z4grid::Maidenhead

Inherits:
Object
  • Object
show all
Defined in:
lib/z4grid.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.to_latlon(location) ⇒ Object 



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# File 'lib/z4grid.rb', line 26

def self.to_latlon(location);
  maidenhead = Maidenhead.new; maidenhead.locator = location; return [ maidenhead.lat, maidenhead.lon ]
end

.to_maidenhead(lat, lon, precision = 5) ⇒ Object 



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# File 'lib/z4grid.rb', line 43

def self.to_maidenhead(lat, lon, precision = 5)
  maidenhead = Maidenhead.new
  maidenhead.lat = lat
  maidenhead.lon = lon
  maidenhead.precision = precision
  maidenhead.locator
end

.valid_maidenhead?(location) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/z4grid.rb', line 8

def self.valid_maidenhead?(location)
  return false unless location.is_a?String
  return false unless location.length >= 2
  return false unless (location.length % 2) == 0

  length = location.length / 2
  length.times do |counter|
    grid = location[counter * 2, 2]
    if (counter == 0)
      return false unless grid =~ /[a-rA-R]{2}/
    elsif (counter % 2) == 0
      return false unless grid =~ /[a-xA-X]{2}/
    else
      return false unless grid =~ /[0-9]{2}/
    end
  end
  true
end

Instance Method Details

#lat ⇒ Object 



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# File 'lib/z4grid.rb', line 51

def lat; @lat.round(6); end

#lat=(pos) ⇒ Object 



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# File 'lib/z4grid.rb', line 50

def lat=(pos); @lat = range_check("lat", 90.0, pos); end

#locator ⇒ Object 



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# File 'lib/z4grid.rb', line 56

def locator
  @locator = ''
  @lat_tmp = @lat + 90.0
  @lon_tmp = @lon + 180.0
  @precision_tmp = @precision
  calculate_field
  calculate_values
  @locator
end

#locator=(location) ⇒ Object 



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# File 'lib/z4grid.rb', line 29

def locator=(location)
  unless Maidenhead.valid_maidenhead?(location)
    raise ArgumentError.new("Location is not a valid Maidenhead Locator System string")
  end
  @locator = location
  @lat = -90.0
  @lon = -180.0
  pad_locator
  convert_part_to_latlon(0, 1)
  convert_part_to_latlon(1, 10)
  convert_part_to_latlon(2, 10 * 24)
  convert_part_to_latlon(3, 10 * 24 * 10)
  convert_part_to_latlon(4, 10 * 24 * 10 * 24)
end

#lon ⇒ Object 



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# File 'lib/z4grid.rb', line 53

def lon; @lon.round(6); end

#lon=(pos) ⇒ Object 



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# File 'lib/z4grid.rb', line 52

def lon=(pos); @lon = range_check("lon", 180.0, pos); end

#precision ⇒ Object 



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# File 'lib/z4grid.rb', line 55

def precision; @precision; end

#precision=(value) ⇒ Object 



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# File 'lib/z4grid.rb', line 54

def precision=(value); @precision = value; end