所以我正在尝试进行时间序列分析，我预测从2004年到2014年的APPL股票价格。数据来自雅虎财经。在我得到摘要后，我在尝试绘制它时会收到'ylim' values的错误。
summary(stockprices)
Date Open High Low Close Volume Adj.Close
2004-01-02: 1 Min. : 21.55 Min. : 24.10 Min. : 21.18 Min. : 22.56 Min. : 44485400 Min. : 1.52
2004-02-02: 1 1st Qu.: 76.56 1st Qu.: 89.71 1st Qu.: 72.17 1st Qu.: 80.06 1st Qu.:110719100 1st Qu.: 10.79
2004-03-01: 1 Median :162.06 Median :180.22 Median :139.01 Median :161.17 Median :150701850 Median : 25.19
2004-04-01: 1 Mean :233.15 Mean :249.92 Mean :213.69 Mean :232.89 Mean :167166820 Mean : 36.12
2004-05-03: 1 3rd Qu.:383.36 3rd Qu.:408.27 3rd Qu.:353.32 3rd Qu.:382.86 3rd Qu.:216954225 3rd Qu.: 60.53
2004-06-01: 1 Max. :671.16 Max. :705.07 Max. :656.00 Max. :667.10 Max. :468331100 Max. :118.46
(Other) :126
plot(as.Date(stockprices$Date, "%d-%b-%y"), stockprices$Close.Price,
xlab = "Dates", ylab = "Adjusted closing price", type = "1",
col = "red", main = "Adjusted closing price of AAPL for past 10 years")
>Error in plot.window(...) : need finite 'ylim' values
In addition: Warning messages:
1: In min(x) : no non-missing arguments to min; returning Inf
2: In max(x) : no non-missing arguments to max; returning -Inf
不知道如何修复它，我希望我的Y轴以几个月的形式显示日期。任何帮助表示赞赏。