as.Date.timeDate

[Achim Zeileis]

Yohan,

thanks a lot, much appreciated!

Best wishes,
Achim


On Wed, 19 Oct 2011, Yohan Chalabi wrote:

>
> On 18 oct. 2011, at 15:15, Achim Zeileis wrote:
>
>> Yohan:
>>
>>> Thanks for the message.
>>>
>>> As mentioned in the r-sig-finance, timeDate already exports as.Date.timeDate.
>>
>> Maybe we should have been more precise in our request: It would be great if "timeDate" could fully export "as.Date.timeDate" and not only as an S3 method.
>>
>>> The problem is really coming from zoo which overwrites the base function as.Date and do not import as.Date methods from other packages.
>>
>> Yes, true. However, to make the dependency path not longer than it already is, it would be nice if you could fully export your method. Then it is found by both generics - the one in base R and the one in zoo.
>>
>> If you're wondering why zoo masks as.Date(). After zoo had long provided an as.Date.numeric, base R decided to break that by adding their own that requires an additional "origin" argument without default. For several year's we worked around this by simply replacing base:::as.Date.numeric in the base NAMESPACE when loading zoo. Then, R-core decided to disallow this workaround and now we have to ship our own generic to assure correct dispatch.
>
> Hi Achim,
>
> Yes, I remember the as.Date.numeric issue. We had to change many functions in our packages because of that.
>
> timeDate will then fully export as.Date.timeDate in its next release.
>
> Regards,
> Yohan
>
>
>>
>> Thanks & best regards,
>> Z
>>
>>> Regards,
>>> Yohan
>>>
>>> On 14 oct. 2011, at 20:37, Gabor Grothendieck wrote:
>>>
>>>> Changes in R have necessitated a change in zoo which results in any
>>>> as.Date method in the timeDate package (or any other package that does
>>>> not export their as.Date methods) not to be dispatched.
>>>>
>>>> This can be fixed by either exporting any as.Date method in the
>>>> NAMESPACE file (or by importing zoo in the NAMESPACE file).
>>>>
>>>> See:
>>>>
>>>> https://stat.ethz.ch/pipermail/r-sig-finance/2011q4/008751.html
>>>>
>>>> --
>>>> Statistics & Software Consulting
>>>> GKX Group, GKX Associates Inc.
>>>> tel: 1-877-GKX-GROUP
>>>> email: ggrothendieck at gmail.com
>>>>
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>>>
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>>
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>
>