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as.Date error

2 messages · Wonjae Lee, David Winsemius

Wonjae Lee
# 
Thank you for replying the as.Date error question.

I have one more question as below.
I used cbind command, and data x changed, 2010-11-16 to 14929, 2010-11-17 to
14930.
What happened to them?
What should I do to see yyyy-mm-dd format data?
[1] "2010-11-16" "2010-11-17" "2010-11-18" "2010-11-19"
x        y
[1,] 14929  1753.75
[2,] 14930 15077.00
[3,] 14931  1759.35
[4,] 14932 15078.00


Thanks
Wonjae

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David Winsemius
#
On Apr 17, 2011, at 7:24 PM, Wonjae Lee wrote:

            

      
      
      
    

        
cbind.default will return a matrix which needs to have all of its  
elements of the same type, so your dates were coerced to numeric since  
their internal representation is as integers.

Had you created x as a data.frame, then cbind would have called  
cbind.data.frame which was probably what you wanted to happen.

 > xdat <-data.frame(x=as.Date(x,"%m/%d/%Y"))
 > cbind(xdat,y)
            x        y
1 2010-11-16  1753.75
2 2010-11-17 15077.00
3 2010-11-18  1759.35
4 2010-11-19 15078.00