I'm trying to run pyalgotrade's event profiler. I'm using custom data, it works when I run it with the default stratergy/predicate 'BuyOnGap' however when I try and run it with a simple custom strategy it throw the error:
Traceback (most recent call last):
File "C:\Users\David\Desktop\Python\Coursera\Computational Finance\Week2\PyAlgoTrade\Bitfinex\FCT\FCT_single_event_test.py", line 43, in <module>
main(True)
File "C:\Users\David\Desktop\Python\Coursera\Computational Finance\Week2\PyAlgoTrade\Bitfinex\FCT\FCT_single_event_test.py", line 35, in main
eventProfiler.run(feed, True)
File "C:\Python27\lib\site-packages\pyalgotrade\eventprofiler.py", line 215, in run
disp.run()
File "C:\Python27\lib\site-packages\pyalgotrade\dispatcher.py", line 102, in run
eof, eventsDispatched = self.__dispatch()
File "C:\Python27\lib\site-packages\pyalgotrade\dispatcher.py", line 90, in __dispatch
if self.__dispatchSubject(subject, smallestDateTime):
File "C:\Python27\lib\site-packages\pyalgotrade\dispatcher.py", line 68, in __dispatchSubject
ret = subject.dispatch() is True
File "C:\Python27\lib\site-packages\pyalgotrade\feed\__init__.py", line 105, in dispatch
self.__event.emit(dateTime, values)
File "C:\Python27\lib\site-packages\pyalgotrade\observer.py", line 59, in emit
handler(*args, **kwargs)
File "C:\Python27\lib\site-packages\pyalgotrade\eventprofiler.py", line 172, in __onBars
eventOccurred = self.__predicate.eventOccurred(instrument, self.__feed[instrument])
File "C:\Python27\lib\site-packages\pyalgotrade\eventprofiler.py", line 89, in eventOccurred
raise NotImplementedError()
NotImplementedError
My code is:
from pyalgotrade import eventprofiler
from pyalgotrade.technical import stats
from pyalgotrade.technical import roc
from pyalgotrade.technical import ma
from pyalgotrade.barfeed import csvfeed
class single_event_strat( eventprofiler.Predicate ):
def __init__(self,feed):
self.__returns = {} # CLASS ATTR
for inst in feed.getRegisteredInstruments():
priceDS = feed[inst].getAdjCloseDataSeries() # STORE: priceDS ( a temporary representation )
self.__returns[inst] = roc.RateOfChange( priceDS, 1 )
# CALC: ATTR <- Returns over the adjusted close values, consumed priceDS
#( could be expressed as self.__returns[inst] = roc.RateOfChange( ( feed[inst].getAdjCloseDataSeries() ), 1 ),
#but would be less readable
def eventOccoured( self, instrument, aBarDS):
if (aBarDS[-1].getVolume() > 10 and aBarDS[-1].getClose() > 5 ):
return True
else:
return False
def main(plot):
feed = csvfeed.GenericBarFeed(0)
feed.addBarsFromCSV('FCT', "FCT_daily_converted.csv")
predicate = single_event_strat(feed)
eventProfiler = eventprofiler.Profiler( predicate, 5, 5)
eventProfiler.run(feed, True)
results = eventProfiler.getResults()
print "%d events found" % (results.getEventCount())
if plot:
eventprofiler.plot(results)
if __name__ == "__main__":
main(True)
What does this error mean ?
Does anyone know what's wrong and how to fix it ?
Here is a link to the eventprofiler code:
As a bonus does anyone know where I can find examples of the profiler being used? other that the example pyalgotrade gives, seen here
I think you just made a spelling mistake in eventOccurred method definition
def eventOccoured( self, instrument, aBarDS):
should be replaced by
def eventOccurred( self, instrument, aBarDS):