Vatsim Online
A Ruby gem for selectively pulling, parsing and displaying Vatsim online stations data. Essentially it's a "Who's online" library, capable of displaying online ATC and/or pilots for given airports, areas or globally and to filter by callsign. Stations are returned as objects, exposing a rich set of attributes. Vatsim data is pulled on preset intervals and cached locally to avoid flooding the servers.
Requirements
Ruby 2.0 or higher
Installation
Add this line to your application's Gemfile:
gem 'vatsim_online'
And then execute:
$ bundle
Or install it yourself as:
$ gem install vatsim_online
Usage
This gem provides two public methods:
-
vatsim_online
, which can be applied to any string (or variable containing a string) representing a full or partial ICAO code or a comma-separated list of ICAO codes. The provided ICAO code or fragment will be used as a search criteria and matched against the current vatsim data. -
vatsim_callsign
, which can be applied to any string (or variable containing a string) representing a full or partial pilot or ATC callsign or a comma-separated list of callsigns. The provided callsign or fragment will be used as a search criteria and matched against the current vatsim data.
Filter by ICAO code examples
For example if you want to retrieve all active stations (ATC positions and pilots) for Vienna airport (ICAO: LOWW), then you can use:
# Attaching the method directly to a string:
"LOWW".vatsim_online
# Attaching the method directly to a list of ICAOs:
"LOWW, LOWK".vatsim_online
# Attaching the method to a variable containing a string:
icao = "LOWW"
icao.vatsim_online
If you want to retrieve the currently active stations for an entire region
(FIR/ARTCC), then you can use the first 2-3 letters of the region's ICAO name.
For example if you want to pull all the stations active in Austria (ICAO code
for the FIR is LOVV), you can use "LO"
as your ICAO search string: all Austrian
airports and ATC station callsigns start with "LO"
:
# Attaching the method directly to a string:
"LO".vatsim_online
# Attaching the method to a variable containing a string:
icao = "LO"
icao.vatsim_online
# Attaching the method to a list of ICAOs:
icao = "LO, LB"
icao.vatsim_online
When parsing the pilot stations for particular airport or area, the library will return the pilots that are flying to or from the given area or airport, not the current enroute stations. The discovery algorithm is based on origin and destination.
Filter by callsign examples
# Attaching the method directly to a string:
"BAW".vatsim_callsign # => returns an array of all Speedbird flights as station objects
# Attaching the method to a variable containing a string:
callsign = "BAW"
callsign.vatsim_callsign # => returns an array of all Speedbird flights as station objects
# Attaching the method to a list of callsigns:
callsign = "BAW, RYR"
callsign.vatsim_callsign # => returns an array of all Speedbird and Ryanair flights as station objects
Anatomy of method returns
The vatsim_online
method returns a hash of 4 elements: 1) the matching atc
stations, 2) all matching pilots stations, 3) matching arrivals, 4) matching
departures. Each of those is an array, cosnsisting of
station objects. Each of these objects includes a number of attributes:
icao.vatsim_online # => {:atc => [a1, a2, a3 ...], :pilots => [p1, p2, p3, p4 ...],
# :departures => [p1, p4 ...], :arrivals => [p2, p3...]}
icao.vatsim_online[:atc] #=> [a1, a2, a3 ...]
icao.vatsim_online[:pilots] #=> [p1, p2, p3 ...]
icao.vatsim_online[:departures] #=> [p1, p3 ...]
icao.vatsim_online[:arrivals] #=> [p2, p4 ...]
icao.vatsim_online[:atc].first #=> a1
icao.vatsim_online[:pilots].first #=> p1
a1.callsign #=> "LQSA_TWR"
a1.frequency #=> "118.25"
a1.name #=> "Svilen Vassilev"
a1.rating #=> "S2"
a1.online_since #=> "2012-09-22 10:00:48 UTC"
...
p1.callsign #=> "ACH217S"
p1.departure #=> "LQSA"
p1.destination #=> "LDSP"
p1.remarks #=> "/V/ RMK/CHARTS"
...
Arrivals
and departures
are returned separately for convenience, in case you
want to loop through them separately. The pilots
array contains all arrivals
and departures.
The vatsim_callsign
method returns an array of all matching stations.
Station attributes
Here's a complete list of the station object attributes that can be accessed:
-
cid
(VATSIM ID) callsign
name
role
frequency
altitude
-
planned_altitude
(or FL) heading
groundspeed
transponder
aircraft
origin
destination
route
-
rating
(returns a humanized version of the VATSIM rating: S1, S2, S3, C1, etc...) facility
remarks
-
atis
(raw atis, as reported from VATSIM, including voice server as first line) -
atis_message
(a humanized version of the ATC atis w/o server and with lines split) -
logon
(login time as unparsed text string:20120722091954
) -
online_since
(returns the station login time parsed as a Ruby Time object in UTC) latitude
longitude
-
latitude_humanized
(e.g. N44.09780) -
longitude_humanized
(e.g. W58.41483) -
qnh_in
(indicated QNH in inches Hg) -
qnh_mb
(indicated QNH in milibars/hectopascals) -
flight_type
(I
for IFR,V
for VFR, etc) -
gcmap
(returns a great circle map image url)
Great circle map visualization
The .gcmap
method, available for all pilot stations, returns a great
circle map image url, depicting the GC route of the aircraft, its origin and destination,
its current position on the route, together with its current altitude and groundspeed.
Example below:
icao.vatsim_online[:pilots].first.gcmap #=> image url of the map
The map size (width and height) and scale can be customized by passing an
optional hash of arguments to the vatsim_online
method like this:
icao.vatsim_online(:gcmap_width => "400", :gcmap_height => "400")[:pilots].first.gcmap #=> image url of the map
# The quotes are optional, so the statement can also be written like this:
icao.vatsim_online(:gcmap_width => 400, :gcmap_height => 400)[:pilots].first.gcmap
Customizing the request
The vatsim online
method can be customized by passing in a hash-style collection
of arguments. The currently supported arguments and their defaults are:
:atc => true # Possible values: true, false. Default: true
:pilots => true # Possible values: true, false. Default: true
:exclude => "ICAO" # Accepts any full or partial ICAO code to be excluded from the ATC stations
:gcmap_width => integer # Optional parameter customizing the width of the station's `.gcmap`
:gcmap_height => integer # Optional parameter customizing the height of the station's `.gcmap`
ATC exclusions
The :exclude => "ICAO"
option can be used to exclude matching stations from the
ATC listing. It accepts full or partial ICAO codes or callsigns.
For example you might want to display all Austrian ATC stations by calling
"LO".vatsim_online
. Seems logical since all Austrian stations callsigns begin
with the LO
prefix. However a few UK stations (London Control for example) also
have callsigns beginning with LO
(LON_CTR). To avoid including them, you can
use the :exclude
option on your request like this:
# Lets exclude all ATC station names beginning with LON from our request
"LO".vatsim_online(:exclude => "LON")[:atc] #=> [atc1, atc2, atc3...]
# This option is not case sensitive so we can use "lon" as well:
"LO".vatsim_online(:exclude => "lon")[:atc] #=> [atc1, atc2, atc3...]
ATC and PILOTS options
Both options can be used to exclude all ATC or pilots stations respectively from the request, in order to speed it up and avoid processing useless data.
Examples:
# Lets exclude all ATC from our request and get the pilots only
"LO".vatsim_online(:atc => false)[:pilots] #=> [p1, p2, p3...]
# Lets exclude all pilots from our request and get the ATC only
"LO".vatsim_online(:pilots => false)[:atc] #=> [a1, a2, a3...]
"LO".vatsim_online(:atc => false)[:pilots].first.callsign #=> "ACH0838"
"LO".vatsim_online(:pilots => false)[:atc].first.callsign #=> "LOVV_CTR"
Example of Ruby on Rails implementation
Here's a possible scenario of using this gem in a Ruby on Rails application. Verbosity is kept on purpose for clarity.
In your controller:
def index
# We want to retrieve all Austrian online stations (ATC and pilots)
icao = "LO"
stations = icao.vatsim_online
# Now we will assign the ATCs and the pilots to separate instance variables,
# to be able to loop through them separately in the view
@atc = stations[:atc]
@pilots = stations[:pilots]
# We can also isolate the departures and/or arrivals for conveneinence if we
# want to loop through them separately
@departures = stations[:departures]
@arrivals = stations[:arrivals]
end
In your view (HAML is used for clarity):
- for atc in @atc
%li
= atc.callsign
= atc.frequency
= atc.rating
= atc.name
= atc.online_since
= atc.atis_message
- for pilot in @pilots
%li
= pilot.callsign
= pilot.name
= pilot.origin
= pilot.destination
= pilot.route
= pilot.flight_type
= pilot.altitude
= pilot.groundspeed
= pilot.heading
= pilot.remarks
= pilot.online_since
= image_tag pilot.gcmap
- for arrival in @arrivals
%li
= arrival.callsign
= arrival.name
= image_tag arrival.gcmap
- for departure in @departures
%li
= departure.callsign
= departure.name
= image_tag departure.gcmap
Notes
- Vatsim status and data files are cached locally to reduce the load on vatsim servers. Random server is chosen to retrieve the data each time. By default the status file is updated once every 4 hours and the data file once every 3 minutes regardless of the number of incoming requests.
- The data is cached in your default TEMP directory (OS specific)
- All the data retrieval and caching logic is encapsulated in a separate class
VatsimTools::DataDownloader
which can be mixed in other applications and libraries too. - The ICAO string used as a search criteria is not case sensitive
- Pilot stations returned are based on origin and destination airports, the current algorithm does not evaluate enroute flights.
- When attaching the
vatsim_online
method to a comma-separated list of full or partial ICAO identifiers it does not matter whether there will be any spaces in front or after the identifiers or the commas, i.e. you can use"LO,LB".vatsim_online
or"LO, LB".vatsim_online
or"LO , LB".vatsim_online
with the same result.
Changelog
v. 0.9.1 - 31 Dec 2016
- Maintenance release, updated dependencies
v. 0.9 - 20 June 2015
- Fixed nil String bug, can select "ALL" (thanks to Pierre Ferran and Florian Rimoli)
v. 0.8.3 - 10 April 2014
- Fix stale data bug, change data fallback logic
v. 0.8.2 - 5 October 2013
- Handle undetermined position when drawing gcmap
v. 0.8.1 - 5 October 2013
- Ignore prefile data
v. 0.8 - 5 October 2013
- search by callsign implemented
v. 0.7.4 - 2 August 2013
- fallback scenarios for offline data servers
v. 0.7.2 - 15 July 2013
- added gemspec license declaration
v. 0.7.1 - 15 July 2013
- more comprehensive ATC ratings list
- dependencies updated
v. 0.7.0 - 26 February 2013
- added Ruby 2.0 support
v. 0.6.2 - 4 January 2013
- updated gem dependencies
- refactored
Station
class for simplicity
v. 0.6.1 - 08 October 2012
- Fixed pilot station duplication issue when using multiple ICAOs
v. 0.6.0 - 08 October 2012
- The
vatsim_online
method now also supports a comma-separated list of full or partial ICAO codes like this:"LO,LB".vatsim_online
. This allows you to pull the information for multiple airports or FIRs in a single request - The comma-seprated list is not sensitive to whitespace, meaning you can use
"LO,LB".vatsim_online
or"LO, LB".vatsim_online
or"LO , LB".vatsim_online
with the same result
v. 0.5.3 - 30 September 2012
- fixed bug with exceptions on missing ATC remark
v. 0.5.2 - 29 September 2012
- fixed permissions bug on UNIX systems
v. 0.5.1 - 23 September 2012
- bugfixes
v. 0.5 - 23 September 2012
- New option
:exclude => "ICAO"
allowing further request customization by excluding a matching subset of ATC stations from the listing. Read the documentation for detailed explanation and examples - New customized station attribute:
online_since
. Returns the station login time parsed as a Ruby Time object in UTC (zulu time). As opposed to thelogon
attribute which returns an unformatted, unparsed string such as20120722091954
- The
rating
station attribute is now humanized not to return just an integer, but a readable version of the VATSIM rating, i.e. S1, S2, S3, C1, C3, I1, I3, etc... - Added the possibility of customizing the great circle maps by optionally passing
parameters for width and height:
icao.vatsim_online(:gcmap_width => 400, :gcmap_height => 400)
. Read the documentation for detailed explanation and examples - New customized station attribute
atis_message
. It will return a humanized web safe version of the ATC atis without the voice server info and with lines split with<br />
tags. As opposed to the originalatis
attribute, which returns raw atis, as reported from VATSIM, including voice server as first line
v. 0.4 - 27 August 2012
- GCMapper integration: this library now plays nicely with gcmapper.
A new attribute is provided for the pilot stations:
.gcmap
which returns a great circle map image url, depicting the GC route of the aircraft, its origin and destination, its current position on the route, together with its current altitude and groundspeed. Look at the example in the README section above. - New station attributes: planned_altitude, transponder, heading, qnh_in, qnh_mb, flight_type, cid, latitude_humanized, longitude_humanized
v. 0.3 - 22 July 2012
- The hash returned by the
vatsim_online
method now includes 2 new arrays:arrivals
anddepartures
. These two are returned separately for convenience, in case you want to loop through them separately. Thepilots
array return is unchanged and contains all arrivals and departures. - New station attributes: latitude, longitude
- Improved UTF-8 conversion process
v. 0.2 - 21 July 2012
- Station attribute
departure
is now renamed toorigin
- UTF-8 is now enforced for all local caching and file/string manipulations, the original Vatsim data is re-encoded
- Station ATIS is now cleaned of invalid and obscure characters
- Improved documentation
Contributing
- Fork it
- Create your feature branch (
git checkout -b my-new-feature
) - Commit your changes (
git commit -am 'Added some feature'
) - Make sure all tests are passing!
- Push to the branch (
git push origin my-new-feature
) - Create new Pull Request
Credits
Copyright © 2016 Svilen Vassilev
Contributors
Released under the MIT LICENSE
Maps generated by the Great Circle Mapper, copyright Karl L. Swartz