R help - Jan 2005 - Converting yr mo da to dates

I'm using R 2.0.1 in windows XP (and am not currently subscribed to this 
mailing list).

I have a USGS dataset, a text file with fixed width fields, that includes 
dates as 6-digit integers in the form yrmoda.  I could either read them that 
way, or with yr, mo, and da as separate integers.  In either case, I'd like 
to convert them to a form will allow plotting other "y" variables
against
the dates (with correct spacing) on the horizontal axis.

I've looked in all the manuals, but didn't find a way to do this.  I can
copy the data to a spreadsheet, make the conversion there, and then move the 
data to R, but that's a nuisance.

I'd appreciate learning whether there is a way to do this all within R. 
Thanks.

Dave Parkhurst

David Parkhurst wrote:
> I'm using R 2.0.1 in windows XP (and am not currently subscribed to
this
> mailing list).
> 
> I have a USGS dataset, a text file with fixed width fields, that 
> includes dates as 6-digit integers in the form yrmoda.  I could either 
> read them that way, or with yr, mo, and da as separate integers.  In 
> either case, I'd like to convert them to a form will allow plotting 
> other "y" variables against the dates (with correct spacing) on
the
> horizontal axis.
> 
> I've looked in all the manuals, but didn't find a way to do this. 
I can
> copy the data to a spreadsheet, make the conversion there, and then move 
> the data to R, but that's a nuisance.
> 
> I'd appreciate learning whether there is a way to do this all within R.
> Thanks.
> 
> Dave Parkhurst
> 
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See ?strptime as in:

strptime(c("050127", "050128"), "%y%m%d")


Uwe Ligges