我在R中创建沃尔玛股票价格的时间图,但有些日子不见了。例如,
4 02/08/01 52.30
5 02/09/01 50.40
6 02/12/01 53.45
7 02/13/01 54.10
8 02/14/01 53.00
9 02/15/01 52.00
然而,R用我所拥有的价格填补了缺失的日子:
4 02/08/01 52.30
5 02/09/01 50.40
6 02/10/01 53.45
7 02/11/01 54.10
8 02/12/01 53.00
9 02/13/01 52.00
我该如何解决这个问题?
这是我的代码:
walmart <- read.csv("/Users/Penny/Desktop/Spring 2017/SS/Group HW/WalMartStock.csv", header=T)
stock.ts <- ts(walmart$Close, frequency = 365, start = c(2001,2), end = c(2002,2))
plot(stock.ts, main = "Wal-Mart Stock", xlab = "Date", ylab = "Closing Price", ylim = c(40,60), bty = "l")