Class: NMEAPlus::Message::NMEA::VTG
- Inherits:
-
NMEAMessage
- Object
- Base
- NMEAMessage
- NMEAPlus::Message::NMEA::VTG
- Defined in:
- lib/nmea_plus/message/nmea/vtg.rb
Overview
VTG - Track made good and Ground speed
Instance Attribute Summary collapse
-
#faa_mode ⇒ String
readonly
FAA Mode.
-
#speed_kmh ⇒ Float
readonly
Speed in km/h.
-
#speed_knots ⇒ Float
readonly
Speed in knots.
-
#track_degrees_magnetic ⇒ Float
readonly
Track in degrees, magnetic.
-
#track_degrees_true ⇒ Object
readonly
Field 1 of the payload, formatted with the function Base._float.
Attributes inherited from NMEAMessage
Attributes inherited from Base
#checksum, #data_type, #fields, #interpreted_data_type, #message_number, #next_part, #original, #payload, #prefix, #total_messages
Instance Method Summary collapse
-
#new_format? ⇒ bool
whether this is the new format.
Methods inherited from NMEAMessage
Methods inherited from Base
_float, _hex_to_integer, #_highest_contiguous_index, _integer, _interval_hms, _string, _utc_date_time, _utctime_hms, #add_message_part, #all_checksums_ok?, #all_messages_received?, #calculated_checksum, #checksum_ok?, degrees_minutes_to_decimal, field_reader, #highest_contiguous_index, nsew_signed_float
Instance Attribute Details
#faa_mode ⇒ String (readonly)
FAA Mode
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# File 'lib/nmea_plus/message/nmea/vtg.rb', line 46 def faa_mode f = new_format? ? 9 : 100 return nil if @fields[f].nil? || @fields[f].empty? @fields[f] end |
#speed_kmh ⇒ Float (readonly)
Speed in km/h
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# File 'lib/nmea_plus/message/nmea/vtg.rb', line 37 def speed_kmh f = new_format? ? 7 : 4 return nil if @fields[f].nil? || @fields[f].empty? @fields[f].to_f end |
#speed_knots ⇒ Float (readonly)
Speed in knots
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# File 'lib/nmea_plus/message/nmea/vtg.rb', line 28 def speed_knots f = new_format? ? 5 : 3 return nil if @fields[f].nil? || @fields[f].empty? @fields[f].to_f end |
#track_degrees_magnetic ⇒ Float (readonly)
Track in degrees, magnetic
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# File 'lib/nmea_plus/message/nmea/vtg.rb', line 19 def track_degrees_magnetic f = new_format? ? 3 : 2 return nil if @fields[f].nil? || @fields[f].empty? @fields[f].to_f end |
#track_degrees_true ⇒ Object (readonly)
Returns field 1 of the payload, formatted with the function Base._float.
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# File 'lib/nmea_plus/message/nmea/vtg.rb', line 14 field_reader :track_degrees_true, 1, :_float |
Instance Method Details
#new_format? ⇒ bool
whether this is the new format. docs say check field #2 for value “2”
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# File 'lib/nmea_plus/message/nmea/vtg.rb', line 10 def new_format? 'T' == @fields[2] end |