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Learning to use consolidators

Below i have attatched some code i found in one of Jareds posts which consolidates 30 minutes into 1 bar. I have 2 questions

1. Why am i unsuccesful in using the data from the bar i created in a loop to execute the buy order?

2. Is it possible to use consolidators accurately to create Montly or weekly timeframe data for forex?
 

from datetime import datetime, timedelta
class DataConsolidationAlgorithm(QCAlgorithm):

def Initialize(self):


self.SetStartDate(2017,1,1)
self.SetEndDate(datetime.now()) #Set End Date

self.AddForex("EURUSD", Resolution.Minute)

# define our 30 minute trade bar consolidator. we can
# access the 30 minute bar from the DataConsolidated events

Consolidator = QuoteBarConsolidator(timedelta(minutes=30))

# attach our event handler. The event handler is a function that will
# be called each time we produce a new consolidated piece of data.

Consolidator.DataConsolidated += self.MinuteBarHandler

# this call adds our 30-minute consolidator to
# the manager to receive updates from the engine

self.SubscriptionManager.AddConsolidator("EURUSD", Consolidator)

def MinuteBarHandler(self, sender, bar):

'''This is our event handler for our 30-minute trade bar defined above in Initialize(). So each time the consolidator
produces a new 30-minute bar, this function will be called automatically. The sender parameter will be the instance of
the IDataConsolidator that invoked the event '''
close = bar.Close
Open = bar.Open
high = bar.High
low = bar.Low

self.Debug(str(self.Time) + " " + str(close)+ " "+str(Open))



def OnData(self, data):
price = self.Securities["EURUSD"].Price
if 0 < high:
self.Buy("EURUSD",1000)


 

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hi,

1) the ondata is called every time you defined in the resolution...so every minute.....

2) you could consolidate day resolution to one month bars ... should be possible

 

here an example how the consoldator works:

https://github.com/QuantConnect/Lean/blob/master/Algorithm.Python/DataConsolidationAlgorithm.py

 

also check this out:

https://www.quantconnect.com/forum/discussion/2931/boot-camp---interactive-tutorial-system
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also:

https://www.quantconnect.com/forum/discussion/3303/how-to-use-rollingwindow--on-multiple-equities-and-indicators/p1
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Thank you Micheal. 

The reason i think that consolidating daily bars into monthly may be inacurate is because there are different amounts of trading days in certain months in the forex market. There is also no trading on certain holidays like christmas

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technically yes i know what you mean but try it first and test/log when you have your first data point. it should be on the first of month....

i am only a c# developer but if there is something like this

 

# first define a one day trade bar -- this produces a consolidated piece of data after a day has passed

oneDayConsolidator = TradeBarConsolidator(timedelta(1)) 

 

from the first algo to create an day candle maybe there should be an method to create a month candle ......

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I will take some time to research this and maybe make another post about it. Thank you Micheal

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