Question

我正在尝试将刻度数据转换为分钟数据。

dolar_1min_xts <- xts()

print(dolar_for_manipulation_xts)

[1]
                       Price   
2018-02-01 09:00:57 "3203.0"
2018-02-01 09:00:57 "3203.5"
2018-02-01 09:00:57 "3203.5"
2018-02-01 09:00:57 "3203.5"
2018-02-01 09:00:57 "3203.5"
2018-02-01 09:00:57 "3203.5"
[...]

dolar_1min_xts <- to.period(dolar_for_manipulation_xts, period = "minutes", k = 1)

to.period（dolar_for_manipulation_xts，period =“分钟”，：不支持的类型

我如何解决此问题的任何提示？

为了复制：

dolar_for_manipulation_xts

    structure(c("3203.0", "3203.5", "3203.5", "3203.5", "3203.5", 
    "3203.5"), class = c("xts", "zoo"), .indexCLASS = c("POSIXct", 
    "POSIXt"), tclass = c("POSIXct", "POSIXt"), .indexTZ = "", tzone = "", index = structure(c(1517482857, 
    1517482857, 1517482857, 1517482857, 1517482857, 1517482857), tzone = "", tclass = c("POSIXct", 
    "POSIXt")), .Dim = c(6L, 1L), .Dimnames = list(NULL, "Price"))

Answer 1

我在https://www.rdocumentation.org/packages/xts/versions/0.11-2/topics/to.period签出了文档

并运行示例代码

data(sample_matrix)
samplexts <- as.xts(sample_matrix)
to.monthly(samplexts)
str(samplexts)

An ‘xts’ object on 2007-01-02/2007-06-30 containing:
  Data: num [1:180, 1:4] 50 50.2 50.4 50.4 50.2 ...
 - attr(*, "dimnames")=List of 2
  ..$ : NULL
  ..$ : chr [1:4] "Open" "High" "Low" "Close"
  Indexed by objects of class: [POSIXct,POSIXt] TZ: 
  xts Attributes:  
 NULL

并与您的数据进行比较

 str(dolar_for_manipulation_xts)

 An ‘xts’ object on 2018-02-01 06:00:57/2018-02-01 06:00:57 containing:
 Data: chr [1:6, 1] "3203.0" "3203.5" "3203.5" "3203.5" "3203.5"
 "3203.5"
  - attr(*, "dimnames")=List of 2   ..$ : NULL   ..$ : chr "Price"   Indexed by objects of class: [POSIXct,POSIXt] TZ:    xts Attributes:  
 NULL

并且注意到您的数据是chr（字符串），而不是num！

我通过删除数字周围的引号（“ 3203.0”）更改为数字，并且该功能正常运行。

to.period函数错误（不支持的类型）

1 个答案: