[R-SIG-Finance] quantstrat chain rule type

[stergios marinopoulos]

Hi, I am having trouble getting a simple profit taking order to work via a
chaining rule.  In the contrived example below, I force a long entry of 2
shares.  Then I expect 1 share to be sold after a 1 point move (i.e. the
"profit taker"), and then I expect the final share to be sold when price
falls below the SMA50.

While I do not see the profit taker order get executed, the price falling
below the SMA50 works as expected for all remaining shares.

I would appreciate it if someone could point out what I am doing wrong with
the chaining rule.

Thank you,
--
sm
Stergios Marinopoulos


library(quantstrat)

# Boiler Plate
tickerSymbol   = "GE"
strategyStr  = 'TwoUnits'
GE  = getSymbols(tickerSymbol, from = "2012-01-01", to = "2012-11-15",
auto.assign = FALSE)
GE$SMA50  = SMA(Cl(GE), n = 50)
GE$CrossBack  = Cl(GE) - GE$SMA50
GE = GE["2012-07-15/"]
magicGoLongDay = "2012-07-23"

currency("USD")
stock(tickerSymbol, currency="USD", multiplier=1)
rm.strat(strategyStr)
initDate = index(GE[1]) - 1
initPortf(name=strategyStr, symbols=tickerSymbol, initDate=initDate,
currency="USD")
initAcct(name=strategyStr, portfolios=strategyStr, initDate=initDate,
initEq=1e4, currency="USD")
initOrders(portfolio=strategyStr, initDate=initDate)
strategy(strategyStr, store=TRUE)

zeros = xts(rep(0,nrow(GE)), order.by=index(GE))
chartSeries(GE, TA="addTA(GE$SMA50, on=1, col=6);addTA(GE$CrossBack,
col=6);addTA(zeros, on=2, col=7);")

# The indicator function.  Force a TRUE value on 6/5/2012
myIndicator <- function(n=2)
{
  indicator = xts(x=rep(0, nrow(GE)), order.by=index(GE) )
  names(indicator) = "indValue"
  indicator[magicGoLongDay, "indValue"] = 1
  return( indicator[, "indValue"] )
}

add.indicator(strategy=strategyStr, name="myIndicator",
arguments=list(n=2), label="indLabel")

add.signal(
  strategy=strategyStr,
  name="sigThreshold",
  arguments=list(
    column       = "CrossBack",
    relationship = "lt",
    threshold    = 0,
    cross        = TRUE
  ),
  label="sig.price.lt.sma50"
)

add.signal(
  strategy=strategyStr,
  name="sigThreshold",
  arguments=list(
    column       = "indValue.indLabel",
    relationship = "eq",
    threshold    = 1,
    cross        = TRUE
  ),
  label="goLong"
)


# Exit remaining when price crosses below on SMA50
add.rule(strategy=strategyStr, name='ruleSignal',
  arguments = list(
    sigcol      = "sig.price.lt.sma50",
    sigval      = TRUE,
    replace     = FALSE,
    orderside   = 'long',
    ordertype   = 'market',
    orderqty    = 'all',
    prefer      = 'Open'
  ),
  type    = 'exit',
  label   = 'ExitPriceLTSMA50'
)

# Exit 1 unit as an initial profit target
add.rule(strategy=strategyStr, name='ruleSignal',
  arguments = list(
    sigcol    = 'goLong',
    sigval    = TRUE,
    replace   = FALSE,
    orderside = 'long',
    ordertype = 'limit',
#   ruletype  = 'exit',   # Is this order ambiguous?
    tmult     = FALSE,
    threshold = 1.00,
    orderqty  = 1,
    prefer    = 'Open'
  ),
  type    = 'chain',
  parent  = 'EnterLong',
  label   = 'TakeProfit'
)

# Go long 2 shares when we have long signal
add.rule(strategy=strategyStr, name = 'ruleSignal',
  arguments = list(
    sigcol    = 'goLong',
    sigval    = TRUE,
    orderside = 'long' ,
    ordertype = 'market',
    orderqty  = 2,
    prefer    = 'Open'
  ),
  type  = 'enter',
  label = 'EnterLong'
)

out = applyStrategy(strategy=strategyStr, portfolios=strategyStr,
verbose=TRUE, debug=TRUE)

# Calculate P&L and resulting equity with blotter
dateRange=paste(
           as.character(index(first(GE))-1),
           '::',
           as.character(index(last(GE))+1),
           sep='')

updatePortf(strategyStr, Dates = dateRange)
updateAcct(strategyStr,  Dates = dateRange)
updateEndEq(strategyStr, Dates = dateRange)

obook        = getOrderBook(portfolio=strategyStr)
transactions = getTxns(Portfolio=strategyStr, Symbol=tickerSymbol)

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