Class: NMEAPlus::Message::NMEA::VWT

Inherits:
NMEAMessage show all
Defined in:
lib/nmea_plus/message/nmea/vwt.rb

Overview

VWT - True Wind Speed and Angle

True wind angle in relation to the vessel’s heading and true wind speed referenced to the water. True wind is the vector sum of the Relative (Apparent) wind vector and the vessel’s velocity vector relative to the water along the heading line of the vessel. It represents the wind at the vessel if it were stationary relative to the water and heading in the same direction.

The use of $–MWV is recommended

See Also:

Instance Attribute Summary collapse

Attributes inherited from NMEAMessage

#message_type, #talker

Attributes inherited from Base

#checksum, #data_type, #fields, #interpreted_data_type, #message_number, #next_part, #original, #payload, #prefix, #total_messages

Method Summary

Methods inherited from NMEAMessage

_10_boolean, _av_boolean

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

#calculated_wind_direction_bow ⇒ Object (readonly)

left/right L/R of vessel heading

Returns:

  • field 2 of the payload, formatted with the function #_string



22
 
# File 'lib/nmea_plus/message/nmea/vwt.rb', line 22

field_reader :calculated_wind_direction_bow, 2, :_string

#calculated_wind_direction_degrees ⇒ Object (readonly)

Calculated wind angle relative to the vessel, 0 to 180, left/right L/R of vessel heading

Returns:

  • field 1 of the payload, formatted with the function #_float



19
 
# File 'lib/nmea_plus/message/nmea/vwt.rb', line 19

field_reader :calculated_wind_direction_degrees, 1, :_float

#speed_kmh ⇒ Object (readonly)

Wind speed, Km/Hr

Returns:

  • field 7 of the payload, formatted with the function #_float



31
 
# File 'lib/nmea_plus/message/nmea/vwt.rb', line 31

field_reader :speed_kmh, 7, :_float

#speed_knots ⇒ Object (readonly)

Calculated wind Speed, knots

Returns:

  • field 3 of the payload, formatted with the function #_float



25
 
# File 'lib/nmea_plus/message/nmea/vwt.rb', line 25

field_reader :speed_knots, 3, :_float

#speed_ms ⇒ Object (readonly)

Wind speed, meters/second

Returns:

  • field 5 of the payload, formatted with the function #_float



28
 
# File 'lib/nmea_plus/message/nmea/vwt.rb', line 28

field_reader :speed_ms, 5, :_float