Date Open High Low Close Volume
1 02/01/2007 32,92 34,53 32,58 34,53 28863,00
2 03/01/2007 35,25 36,44 34,60 36,44 173949,00
3 04/01/2007 35,88 36,38 35,15 36,25 88676,00
4 05/01/2007 36,80 37,23 35,82 36,90 38778,00
5 08/01/2007 37,04 37,50 35,68 36,97 51075,00
6 09/01/2007 37,23 39,54 37,23 39,54 282032,00
7 10/01/2007 39,18 39,54 38,88 39,05 438456,00
8 11/01/2007 39,05 39,87 37,70 39,54 76578,00
9 12/01/2007 40,07 42,08 39,54 41,71 362448,00
10 15/01/2007 41,52 46,13 41,52 45,01 324165,00
我想将Date
从类factor
转换为Date
date <- as.Date(dane$Date,format="%d/%m/%y")
结果如下:
[1] "2020-01-02" "2020-01-03" "2020-01-04"
"2020-01-05" "2020-01-08" "2020-01-09" "2020-01-10"
"2020-01-11" "2020-01-12" "2020-01-15"
我不明白为什么结果是错的。
您使用日期格式标志为2位数年份。 See this list of date format flags.
试试资本Y
:
date <- as.Date(dane$Date,format="%d/%m/%Y")