绘制 xts 对象时出错：'x' 必须是时间序列对象

Question

dataframe“Bangladesh”看起来像-

  Province  Country      Cases  Date
1  NA       Bangladesh     0    2020-01-22
2  NA       Bangladesh     1    2020-01-23
3  NA       Bangladesh     2    2020-01-24
4  NA       Bangladesh     3    2020-01-25

为了转换为 xts，我使用了以下代码

Bangladesh_xts <- xts( Bangladesh, order.by= Bangladesh$Date)
Bangladesh_Final <- Bangladesh_xts[,-4]

           Province  Country      Cases
2020-01-22  NA       Bangladesh     0
2020-01-23  NA       Bangladesh     1
2020-01-24  NA       Bangladesh     2
2020-01-25  NA       Bangladesh     3

is.xts (Bangladesh_Final) 显示“真”。但是当我尝试

plot(Bangladesh_Final$Cases) 每次“plot.xts(Bangladesh_Final$Cases) 中的错误：'x' 必须是时间序列对象”时都会显示此消息。我做错了什么？

Answer 1

我们需要 select Cases 以避免将 class 从数字更改为 character 因为 xts 也是 matrix并且 matrix 只能有一个 class

Bangladesh_xts <- xts( Bangladesh$Cases, order.by= as.Date(Bangladesh$Date))

绘制 xts 对象时出错：'x' 必须是时间序列对象

Error in plotting xts object: 'x' must be a time-series object

r

plot

error-handling

time-series

xts