Class: NMEAPlus::Message::AIS::VDMPayload::SubAreaScaled

Inherits:

SubArea

• Object
• Payload
• SubArea
• NMEAPlus::Message::AIS::VDMPayload::SubAreaScaled

Defined in:

lib/nmea_plus/message/ais/vdm_payload/sub_area.rb

Overview

SubArea structure base type for a region with scale

Direct Known Subclasses

SubArea3, SubAreaAnchored

Instance Attribute Summary

• #scale_factor ⇒ Object readonly

  The field defined by the 2 bits starting at payload bit 3, formatted with the function Payload#_u(, , ).

• #scale_meters ⇒ Integer readonly

  Scale factor represented in meters to multiply by.

Attributes inherited from SubArea

#shape_description, #shape_id

Attributes inherited from Payload

#fill_bits, #payload_bitstring

Method Summary

Methods inherited from Payload

#_2b_data_string, #_6b_ascii, #_6b_boolean, #_6b_integer, #_6b_integer_scaled, #_6b_integer_scaled_shifted, #_6b_negated_boolean, #_6b_string, #_6b_string_nullterminated, #_6b_unsigned_integer, #_6b_unsigned_integer_scaled, #_6b_unsigned_integer_scaled_shifted, #_8b_data_string, #_access, #_bit_slices, #_get_date_mdhm, #_object_by_name, #initialize, payload_reader

Constructor Details

This class inherits a constructor from NMEAPlus::Message::AIS::VDMPayload::Payload

Instance Attribute Details

#scale_factor ⇒ Object (readonly)

Returns The field defined by the 2 bits starting at payload bit 3, formatted with the function Payload#_u(, , ).

Returns:

• The field defined by the 2 bits starting at payload bit 3, formatted with the function Payload#_u(, , )

# File 'lib/nmea_plus/message/ais/vdm_payload/sub_area.rb', line 32

payload_reader :scale_factor, 3, 2, :_u

#scale_meters ⇒ Integer (readonly)

Returns Scale factor represented in meters to multiply by.

Returns:

• (Integer) —

  Scale factor represented in meters to multiply by

# File 'lib/nmea_plus/message/ais/vdm_payload/sub_area.rb', line 36

def scale_meters
  10**scale_factor
end