traffic.core.iterate
- class traffic.core.FlightIterator(generator)
Bases:
objectA FlightIterator is a specific structure providing helpers after methods applied on a Flight that return a sequence of pieces of trajectories.
Methods returning a FlightIterator include:
Flight.split("10 min")iterates over pieces of trajectories separated by more than 10 minutes without data;Flight.go_around("LFBO")iterates over landing attempts on a given airport;Flight.aligned_on_ils("LFBO")iterates over segments of trajectories aligned with any of the runways at LFBO.and more.
Since a FlightIterator is not a Flight, you can:
iterate on it with a for loop, or with Python built-ins functions;
index it with bracket notation (using positive integers or slices);
get True if the sequence is non empty with
.has();get the first element in the sequence with
.next();count the element in the sequence with
.sum();concatenate all elements in the sequence with
.all();get the biggest/shortest element with
.max()/.min(). By default, comparison is made on duration.
Warning
FlightIterator instances consume themselves out.
If you store a FlightIterator in a variable, calling methods twice in a row will yield different results. In Jupyter environments, representing the FlightIterator will consume it too.
To avoid issues, the best practice is to not store any FlightIterator in a variable.
- all(flight_id=None)
Returns the concatenation of elements in the FlightIterator.
>>> flight.aligned_on_ils("LFBO").all()
This is equivalent to:
>>> flight.all(lambda f: f.aligned_on_ils("LFBO")) >>> flight.all('aligned_on_ils("LFBO")')
- final()
Returns the final (last) element in the FlightIterator.
Example usage:
>>> first_attempt = flight.runway_change().final()
This is equivalent to:
>>> flight.final("runway_change")
- has()
Returns True if the FlightIterator is not empty.
Example usage:
- Return type:
>>> flight.emergency().has() True
This is equivalent to:
>>> flight.has("emergency")
- map(fun)
Applies a function on each segment of an Iterator.
For instance:
- Return type:
>>> flight.split("10min").map(lambda f: f.resample("2s")).all()
- max(key='duration')
Returns the biggest element in the Iterator.
By default, comparison is based on duration.
>>> flight.query("altitude < 5000").split().max()
but it can be set on start time as well (the last event to start)
>>> flight.query("altitude < 5000").split().max(key="start")
- min(key='duration')
Returns the shortest element in the Iterator.
By default, comparison is based on duration.
>>> flight.query("altitude < 5000").split().min()
but it can be set on ending time as well (the first event to stop)
>>> flight.query("altitude < 5000").split().min(key="stop")
- next()
Returns the first/next element in the FlightIterator.
Example usage:
>>> first_attempt = flight.runway_change().next()
This is equivalent to:
>>> flight.next("runway_change")
- plot(*args, **kwargs)
Plots all elements in the structure.
Arguments as passed as is to the Flight.plot() method.
- Return type: