add.rule(strategy.st, name = "ruleSignal", 
         arguments = list(sigcol = "filterexit", 
                          sigval = TRUE, orderqty = "all", 
                          ordertype = "market",
                          orderside = "long", 
                          replace = FALSE, prefer = "Open"),
         type = "exit")

• replace: TRUE なら他のシグナルをキャンセル、FALSE なら維持

• prefer: 約定価格の基準

  • bar: open, high, low, close
  • 既定: 次の日/バーの終値で買い