HI all R user,
I'm working hard to learn R for financial data analysis. 
Now, I meet a question about coerce object into timeDate.
I have DateList file, csv extension. I save this file by EXCEL.
But, I can't import successfully to R in Date Data.
I don't know why ?  I have been follow help file to do as below.
Is there anybody to help me for this problem ?
Thanks a lot.
ps. I have been trying long time to figure out this problem. 
     Alternative, I use strptime function to make format. It's still not work.
     I don't know what's wrong ?

> library(timeDate)
> date <- read.csv("D:/date.csv",header=T,sep=",")
> head(date)
       Date
1 5/28/2010
2  6/1/2010
3  6/2/2010
4  6/3/2010
5  6/4/2010
6  6/7/2010
> date <- as.timeDate(date)
Warning message:
In whichFormat(charvec[1]) :
  character string is not in a standard unambiguous format
> date <- strptime(date,format="%m/%d/%Y")
> date
[1] NA

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