[R-SIG-Finance] high frequency data analysis in R

[Michael]

Could anybody comment on my approach of obtaining regularly spaced
data from irregularly spaced price changes, and then use R to process
them?

On Thu, May 21, 2009 at 8:38 AM, Michael <comtech.usa at gmail.com> wrote:
> My data are price change arrivals, irregularly spaced. But when there
> is no price change, the price stays constant. Therefore, in fact, at
> any time instant, you give me a time, I can give you the price at that
> very instant of time. So irregularly spaced data can be easily sampled
> to be regularly spaced data.
> What do you think of this approach?
>
> On Thu, May 21, 2009 at 8:21 AM, Michael <comtech.usa at gmail.com> wrote:
>> Thanks Jeff.
>>
>> By high frequency I mean really the tick data. For example, during
>> peak time, the arrival of price events could be at about hundreds to
>> thousands within one second, irregularly spaced.
>>
>> I've heard that forcing irregularly spaced data into regularly spaced
>> data(e.g. through interpolation) will lose information. How's that so?
>>
>> Thanks!
>>
>> On Thu, May 21, 2009 at 8:15 AM, Jeff Ryan <jeff.a.ryan at gmail.com> wrote:
>>> Not my domain, but you will more than likely have to aggregate to some
>>> sort of regular/homogenous type of series for most traditional tools
>>> to work.
>>>
>>> xts has to.period to aggregate up to a lower frequency from tick-level
>>> data. Coupled with something like na.locf you can make yourself some
>>> high frequency 'regular' data from 'irregular'
>>>
>>> Regular and irregular of course depend on what you are looking at
>>> (weekends missing in daily data can still be 'regular').
>>>
>>> I'd be interested in hearing thoughts from those who actually tread in
>>> the high-freq domain...
>>>
>>> A wealth of information can be found here:
>>>
>>>  http://www.olsen.ch/publications/working-papers/
>>>
>>> Jeff
>>>
>>> On Thu, May 21, 2009 at 10:04 AM, Michael <comtech.usa at gmail.com> wrote:
>>>> Hi all,
>>>>
>>>> I am wondering if there are some special toolboxes to handle high
>>>> frequency data in R?
>>>>
>>>> I have some high frequency data and was wondering what meaningful
>>>> experiments can I run on these high frequency data.
>>>>
>>>> Not sure if normal (low frequency) financial time series textbook data
>>>> analysis tools will work for high frequency data?
>>>>
>>>> Let's say I run a correlation between two stocks using the high
>>>> frequency data, or run an ARMA model on one stock, will the results be
>>>> meaningful?
>>>>
>>>> Could anybody point me some classroom types of treatment or lab
>>>> tutorial type of document which show me what meaningful
>>>> experiments/tests I can run on high frequency data?
>>>>
>>>> Thanks a lot!
>>>>
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>>>
>>>
>>>
>>> --
>>> Jeffrey Ryan
>>> jeffrey.ryan at insightalgo.com
>>>
>>> ia: insight algorithmics
>>> www.insightalgo.com
>>>
>>
>