如何使有状态的JBehave步骤对于多线程执行是安全的(How to make stateful JBehave steps safe for multithreaded execution)

 chart.PerformanceSummary实际上只是几个图表的包装器。 
 
 您可以这样做，并根据需要将其水平扩展到任意数量的符号（如果您愿意，可以超过2个符号）  ： 
 
par(mfrow=c(3,2))
# First row
chart.CumReturns(XTS1, ylab = "Cumulative Return", main = "give me a title")
chart.CumReturns(XTS2, ylab = "Cumulative Return", main = "give me a title2")
# second row
chart.BarVaR(XTS1)
chart.BarVaR(XTS2)

# third row
chart.Drawdown(XTS1, main = "DD title", ylab = "Drawdown", 
)
chart.Drawdown(XTS2, main = "", ylab = "Drawdown", 
)
 
 您需要为每个绘图添加适当的参数，例如颜色和标题（留给您），但您可以灵活地添加来自精彩xts ， quantmod ， performanceAnalytics包（以及其他）的任何图表。 

chart.PerformanceSummary is really just a wrapper to several charts.
 
You could do this, and extend it to any number of symbols horizontally if you wish (more than 2 symbols if you wanted):
 
par(mfrow=c(3,2))
# First row
chart.CumReturns(XTS1, ylab = "Cumulative Return", main = "give me a title")
chart.CumReturns(XTS2, ylab = "Cumulative Return", main = "give me a title2")
# second row
chart.BarVaR(XTS1)
chart.BarVaR(XTS2)

# third row
chart.Drawdown(XTS1, main = "DD title", ylab = "Drawdown", 
)
chart.Drawdown(XTS2, main = "", ylab = "Drawdown", 
)
 
You need to add the appropriate parameters to each plot for things like colour and titles (leaving that to you), but you have the flexibility of adding any charts from the wonderful xts, quantmod, performanceAnalytics packages (and others).