[R-SIG-Finance] quantstrat parameter prefer = 'Open" question

[Andre Mikulec]

Here "prefer = 'Open' is  shown
https://github.com/braverock/quantstrat/blob/b32907739c1aca80cb9a49de79a980e1b9922bc5/demo/rocema.R

  # * using prefer='Open' on next bar
  applyStrategy(s, p, parameters=list(nEMA=.ema,nROC=.roc,nTREND=.trend), verbose = FALSE, prefer='Open')

Here "prefer = High/Low" are shown
https://timtrice.github.io/backtesting-strategies/stop-loss.html#add-rules-1

  add.rule(. . ., prefer = "High", . . .)


Thanks,
Andre Mikulec
Andre_Mikulec at Hotmail.com


________________________________
From: Ilya Kipnis <ilya.kipnis at gmail.com>
Sent: Monday, January 29, 2018 2:45 PM
To: Andre Mikulec
Cc: r-sig-finance at r-project.org
Subject: Re: [R-SIG-Finance] quantstrat parameter prefer = 'Open" question

They go in your rules, not in the applyStrategy call, to my knowledge.

On Mon, Jan 29, 2018 at 2:30 PM, Andre Mikulec <andre_mikulec at hotmail.com<mailto:andre_mikulec at hotmail.com>> wrote:
Hello,

I am using quantstrat.

I have noticed that the prefer argument is acceptable to be sent in many functions.

I would like make a 'decision to buy' based on yesterday's Closing price.
I would like to *actually buy* this morning at today's Opening price.

In https://github.com/braverock/quantstrat
based on what I have seen, and debugged/traced through
in the demos and sandbox directories' *.R files
the case seems that ( in for example demo/faber.R )

1.
I *would not* send the parameter "prefer = 'Open'"
to add.rule.
So my add.rule would look like add.rule(. . . sigCrossover . . .)

2.
I *would* send the parameter "prefer = 'Open'"
to applyStrategy
So my applyStrategy would look like applyStrategy(. . . , prefer = 'Open', . . .)

Are 1. and 2. true?
If not true, what would I need to do?
What function calls with "prefer = 'Open'" would be needed?

Thanks,
Andre Mikulec
Andre_Mikulec at Hotmail.com



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