嗨,我正在处理这段代码(这有效且可重现)
if (!exists('.blotter')) .blotter <- new.env()
if (!exists('.strategy')) .strategy <- new.env()
if (!exists('.instrument')) .instrument <- new.env()
currency("USD")
stock("SPY",currency="USD",multiplier=1)
ls(envir=FinancialInstrument:::.instrument)
initDate <- '1997-12-31'
startDate <- '1998-01-01'
endDate <- '2013-07-31'
initEq <- 1e6
Sys.setenv(TZ="UTC")
getSymbols('SPY', from=startDate, to=endDate, adjust=T)
SPY=to.monthly(SPY, indexAt='endof')
SPY$SMA10m <- SMA(Cl(SPY), 10)
# inz portfolio, account
qs.strategy <- "qsFaber"
rm.strat(qs.strategy) # remove strategy etc. if this is a re-run
initPortf(qs.strategy,'SPY', initDate=initDate)
initAcct(qs.strategy,portfolios=qs.strategy, initDate=initDate, initEq=initEq)
initOrders(portfolio=qs.strategy,initDate=initDate)
# instantiate a new strategy object
strategy(qs.strategy,store=TRUE)
add.indicator(strategy = qs.strategy, name = "SMA",
arguments = list(x = quote(Cl(mktdata)), n=10), label="SMA10")
add.signal(qs.strategy,name="sigCrossover",
arguments = list(columns=c("Close","SMA10"),relationship="gt"),
label="Cl.gt.SMA")
add.signal(qs.strategy,name="sigCrossover",
arguments = list(columns=c("Close","SMA10"),relationship="lt"),
label="Cl.lt.SMA")
add.rule(qs.strategy, name='ruleSignal',
arguments = list(sigcol="Cl.gt.SMA", sigval=TRUE, orderqty=900,
ordertype='market', orderside='long', pricemethod='market'),
type='enter', path.dep=TRUE)
add.rule(qs.strategy, name='ruleSignal',
arguments = list(sigcol="Cl.lt.SMA", sigval=TRUE, orderqty='all',
ordertype='market', orderside='long', pricemethod='market'),
type='exit', path.dep=TRUE)
out <- applyStrategy(strategy=qs.strategy , portfolios=qs.strategy)
updatePortf(qs.strategy)
updateAcct(qs.strategy)
updateEndEq(qs.strategy)
myTheme<-chart_theme()
myTheme$col$dn.col<-'lightblue'
myTheme$col$dn.border <- 'lightgray'
myTheme$col$up.border <- 'lightgray'
# plot performance
chart.Posn(qs.strategy, Symbol = 'SPY', Dates = '1998::',theme=myTheme)
plot(add_SMA(n=10,col=4, on=1, lwd=2))
由于我想在更复杂的策略上使用它,我有几个问题:
指标有必要吗?
与 1 相关:这些 Strategy 对象等实际存储了什么?首先,他直接在 SPY 表中创建列 SMA10m。据我了解,他随后构建了与 SPY 表中已经创建的指标基本相同的指标,以使信号正常工作?所以代码
参数=列表(列=c(“关闭”,“SMA10”)
访问收盘(显然也存储了?)作为 SMA10,这是我的指标,对吗?如果不需要,有没有办法省略指标?或者指示器只是 SPY 表中的另一列,因为他使用 columns 命令访问它?