[R] 計算年度報酬率

程式語言：R
library("quantmod")
library("financial")
https://github.com/z-Wind/portfolioReturn

功能：計算年度報酬率

呈現結果如下圖
依其資產配置更改
symbol = c("VTI","VBR","VPL","VGK","VWO","BND","BWX","VNQ")
ratio =  c(0.15,0.0375,0.1875,0.1875,0.1875,0.06,0.14,0.05)