将 Excel 中的一列日期读入 zoo(或 xts)
Read a column of dates from Excel into zoo (or xts)
我有一列日期,从 Excel 作为 CSV 导出到数据框中,"import dataset..." 中的默认类型“...来自 CSV”,即 d<-read_csv(data.csv)
。
我喜欢从数据框中创建一个动物园 and/or xts 对象。
数据为:
30/04/2016
31/05/2016
30/06/2016
我收到以下错误:
dates <- c('30/04/2016','31/05/2016','30/06/2016')
d <- dates
z <- read.zoo(d)
Error in read.zoo(d) : index has bad entry at data row 1
z <- read.zoo(d, FUN = as.Date())
Error in as.Date() : argument "x" is missing, with no default
z <- read.zoo(d, FUN = as.Date(format="%d/%m/%Y"))
Error in as.Date(format = "%d/%m/%Y") : argument "x" is missing,
with no default
或者,如果我直接读入 zoo 格式的 arguemnt,我会得到一个不同的错误:
ts.z <- read.zoo(d,index=1,tz='',format="%d/%m/%Y")
Error in read.zoo(d, index = 1, tz = "", format = "%d/%m/%Y") :
index has bad entry at data row 1
错误条目第 1 行的错误是什么?指定 FUN = 的正确方法是什么? 类 的正确输入和 read.zoo 的区别是什么?
来自 ?read.zoo
关于 file
参数:
character string or strings giving the name of the file(s) which the
data are to be read from/written to. See read.table
and
write.table
for more information. Alternatively, in read.zoo
, file
can be a connection or a data.frame (e.g., resulting from a previous
read.table
call) that is subsequently processed to a "zoo" series.
您的示例中出现的问题是 d
既不是文件名、连接也不是 data.frame。您必须将其包装在 data.frame()
.
中
一个工作示例:
z <- read.zoo(data.frame(dates), FUN = as.Date, format='%d/%m/%Y')
给出:
> z
2016-04-30
2016-05-31
2016-06-30
> class(z)
[1] "zoo"
使用的输入数据:
dates <- c('30/04/2016','31/05/2016','30/06/2016')
我有一列日期,从 Excel 作为 CSV 导出到数据框中,"import dataset..." 中的默认类型“...来自 CSV”,即 d<-read_csv(data.csv)
。
我喜欢从数据框中创建一个动物园 and/or xts 对象。
数据为:
30/04/2016
31/05/2016
30/06/2016
我收到以下错误:
dates <- c('30/04/2016','31/05/2016','30/06/2016')
d <- dates
z <- read.zoo(d)
Error in read.zoo(d) : index has bad entry at data row 1
z <- read.zoo(d, FUN = as.Date())
Error in as.Date() : argument "x" is missing, with no default
z <- read.zoo(d, FUN = as.Date(format="%d/%m/%Y"))
Error in as.Date(format = "%d/%m/%Y") : argument "x" is missing, with no default
或者,如果我直接读入 zoo 格式的 arguemnt,我会得到一个不同的错误:
ts.z <- read.zoo(d,index=1,tz='',format="%d/%m/%Y")
Error in read.zoo(d, index = 1, tz = "", format = "%d/%m/%Y") :
index has bad entry at data row 1
错误条目第 1 行的错误是什么?指定 FUN = 的正确方法是什么? 类 的正确输入和 read.zoo 的区别是什么?
来自 ?read.zoo
关于 file
参数:
character string or strings giving the name of the file(s) which the data are to be read from/written to. See
read.table
andwrite.table
for more information. Alternatively, inread.zoo
, file can be a connection or a data.frame (e.g., resulting from a previousread.table
call) that is subsequently processed to a "zoo" series.
您的示例中出现的问题是 d
既不是文件名、连接也不是 data.frame。您必须将其包装在 data.frame()
.
一个工作示例:
z <- read.zoo(data.frame(dates), FUN = as.Date, format='%d/%m/%Y')
给出:
> z
2016-04-30
2016-05-31
2016-06-30
> class(z)
[1] "zoo"
使用的输入数据:
dates <- c('30/04/2016','31/05/2016','30/06/2016')