[R] Problems with weekday extraction from zoo objects

[Gabor Grothendieck]

Please provide a reproducible example (and read the posting
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On 6/23/06, Kerpel, John <John.Kerpel at infores.com> wrote:
> Hi Folks!
>
>
>
> I'm struggling with dates - but enough about my personal life.....
>
>
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> I have two daily time series files.  In one (x) the date format is Y/m/d
> and the other (y) is d/m/y.  I used read.zoo on both and they read into
> R with no problem.
>
>
>
> Then I use: weekdays(as.Date(x$DATE)) and get what I expect - all the
> days of the week in my data set.
>
>
>
> When I use: weekdays(as.Date(y$Date)) I get:
>
>
>
> Error in fromchar(x) : character string is not in a standard unambiguous
> format
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> I've tried to set the format= in read.zoo to format="%d/%m/%Y" but this
> doesn't seem to solve the problem.
>
>
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> What's going on here?  (I'm new to these dates functions, so please be
> patient - I'll get the hang out of soon!)
>
>
>
> Best,
>
>
>
> John
>
>
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