chart.PerformanceSummary的标题大小

Question

我不是100％确定这只是一个错误或其他问题，但是如何从charts.PerformanceSummary()包中更改PerformanceAnalytics输出的标题字体大小？

这是我可以重复的例子，我希望将字体大小增加到原来的6倍......

require(PerformanceAnalytics)
v <- rnorm(100,0.001,0.003)
charts.PerformanceSummary(xts(v,Sys.Date()-(100:1)),main="random title")
charts.PerformanceSummary(xts(v,Sys.Date()-(100:1)),main="random title", cex.main=6)

输出似乎相同，标题大小没有变化....

Answer 1

在绘制之前设置cex.main：

par(cex.main = 6)
charts.PerformanceSummary(xts(v,Sys.Date()-(100:1)),main="random title")

更新

您可能尝试的另一种替代方案（但需要先进行一些测试的方法）是使用title()函数。

# Set `main` to `""`
charts.PerformanceSummary(xts(v,Sys.Date()-(100:1)), main = "")
# You'll have to experiment with the best combination of `line` and `cex.main`
title(main="random title", line = -2, outer = TRUE, cex.main=3)