NAME

Net::GPSD3::Return::TPV - Net::GPSD3 Return TPV Object

SYNOPSIS

printf "Time: %s, Lat: %s, Lon: %s\n", $object->time, $object->lat, $object->lon;

DESCRIPTION

Provides a Perl object interface to the Time-Velocity-Position (TVP) object returned by the GPSD daemon.

Example JSON objects:

{
  "class":"TPV",
  "tag":"MID2",
  "device":"/dev/ttyUSB0",
  "time":1253593085.470,
  "ept":0.005,
  "lat":38.88945123,
  "lon":-77.03522143,
  "track":171.7249,
  "speed":0.467,
  "mode":2
}

{
  "class":"TPV",
  "tag":"MID2",
  "device":"/dev/ttyUSB0",
  "time":1253593667.430,
  "ept":0.005,
  "lat":38.88945123,
  "lon":-77.03522143,
  "alt":146.911,
  "track":180.0000,
  "speed":0.194,
  "climb":-0.157,
  "mode":3
}

METHODS PROPERTIES

class

Returns the object class

string

Returns the JSON string

parent

Return the parent Net::GPSD object

device

Name of originating device.

tag

Type tag associated with this GPS sentence; from an NMEA device this is just the NMEA sentence type.

mode

NMEA mode: %d, 0=no mode value yet seen, 1=no fix, 2=2D, 3=3D.

time

Seconds since the Unix epoch, UTC. May have a fractional part of up to .01sec precision.

datetime

Returns a DateTime object

strftime

lat

Latitude in degrees: +/- signifies West/East

lon

Longitude in degrees: +/- signifies North/South.

alt

Altitude in meters.

speed

Speed over ground, meters per second.

track

Course over ground, degreesfrom true north.

climb

Climb (postive) or sink (negative) rate, meters per second.

ept

Estimated timestamp error (%f, seconds, 95% confidence).

epx

epy

Latitude error estimate in meters, 95% confidence.

epv

Estimated vertical error in meters, 95% confidence.

eps

Speed error estimate in meters/sec, 95% confifdence.

epd

Direction error estinmate in degrees, 95% confifdence.

epc

Climb/sink error estinmate in meters/sec, 95% confifdence.

METHODS VALUE ADDED

point

Returns a GPS::Point Object

_define

BUGS

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SUPPORT

Try gpsd-dev email list

AUTHOR

Michael R. Davis
CPAN ID: MRDVT
STOP, LLC
domain=>michaelrdavis,tld=>com,account=>perl
http://www.stopllc.com/

COPYRIGHT

This program is free software licensed under the...

The BSD License

The full text of the license can be found in the LICENSE file included with this module.

SEE ALSO

Net::GPSD3, GPS::Point, Net::GPSD3::Return::Unknown