library(quantmod)
library(xts)
getSymbols("SY1.DE", from = "2019-4-10", to = "2019-4-19", auto.assign = TRUE)
getSymbols("PEP", from = "2019-4-9", to = "2019-4-19", auto.assign = TRUE)
calcreturn <- function(data, amount = 24) {
start <- as.numeric(data[,4][1])
end <- as.numeric(data[,4][nrow(data)])
difference <- end - start
winning <- difference * amount
return(winning)
}
allstocks <- list(SY1.DE, PEP)
amount <- list(24, 23)
lapply(allstocks, calcreturn)
大家好!
这是我的代码,用于计算我的股票收益。但是,我购买的股票数量不同,因此lapply仅在数量参数不变时起作用。有一天要处理不断变化的论点吗?
谢谢!
答案 0 :(得分:0)
您可以修改lapply以使指数与数量一对一的股票配对运行:
lapply(1:length(allstocks), function(x) calcreturn(allstocks[[x]], amount[[x]]))