相关疑难解决方法(0)

题:

有没有办法在read.table/read.csv中使用colClasses参数时指定Date格式？

(我意识到我可以在导入后进行转换,但是有很多像这样的日期列,在导入步骤中更容易实现)

例:

我有一个.csv格式的日期列%d/%m/%Y.

dataImport <- read.csv("data.csv", colClasses = c("factor","factor","Date"))

这会导致转换错误.例如,15/07/2008成为0015-07-20.

可重现的代码:

data <- 
structure(list(func_loc = structure(c(1L, 2L, 3L, 3L, 3L, 3L, 
3L, 4L, 4L, 5L), .Label = c("3076WAG0003", "3076WAG0004", "3076WAG0007", 
"3076WAG0009", "3076WAG0010"), class = "factor"), order_type = structure(c(3L, 
3L, 1L, 1L, 1L, 1L, 2L, 2L, 3L, 1L), .Label = c("PM01", "PM02", 
"PM03"), class = "factor"), actual_finish = structure(c(4L, 6L, 
1L, 2L, 3L, 7L, 1L, 8L, 1L, 5L), .Label = c("", "11/03/2008", 
"14/08/2008", …