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Even Worse,
The Stock price could move, But still no one trades in it, And you wouldn't
even know about it - IF you were using unpadded data!!!!
Michael.
At 11:54 PM 1/01/2004, you wrote:
>I Agree with Chuck here,
> Why on earth you would want unpadded data is beyond me. (For the
>reason of disrupting indicators).
>
>With unpadded data, If a stock simply had no trades for the day, then it
>would be ommited from the unpadded list of stocks. Not just wether it was
>actualy able to trade that day (Suspended or whatever).
>
>When I want a MA of the last 3 trading days - If I don't average in the day
>with 0 trades, Im not realy getting an MA of the last 3 days.
>
>Michael.
>
>
>At 10:47 PM 1/01/2004, you wrote:
> >Chuck,
> >
> >My question for you, however, is how do the various indicators and moving
> >average calculations deal with un-padded data holes. If I do a 5-day MA,
> >for instance, and one of the days has no data, what would I get for the
> >MA? Same for RSI or any other indicator. It's taken me years to get
> >rid of data holes and find a data providor who will consistently pad them
> >for me so that indicators and other calculations work properly (IMO).
> >
> >That's why I prefer unpadded data. I don't want 'artificial' data to
> >affect my indicators. The MA from unpadded data represents only real
> >trading days data.
> >So if say there was no trading on friday, the MA would represent 5 days
> >before friday (previous friday, last monday, tuesday, wed, thursday).
> > From my *personal* point of view, calculation of indicators should not be
> > affected by bars artificially added by padding process.
> >But of course your preference may be different and you can use padded data
> >and include all bars (including artificial ones with zero volume).
> >
> >Best regards,
> >Tomasz Janeczko
> >amibroker.com
> >----- Original Message -----
> >From: <mailto:chuck_rademacher@xxxxxxxxxx>Chuck Rademacher
> >To: <mailto:amibroker@xxxxxxxxxxxxxxx>amibroker@xxxxxxxxxxxxxxx
> >Sent: Wednesday, December 31, 2003 9:29 PM
> >Subject: [amibroker] More on data holes - for TJ
> >
> >TJ,
> >
> >Paul's plug-in and my conversion program could, if desired, create data
> >holes (consistently) for users who want them. I'm not trying to be
> >funny, but it is possible to leave a hole on those days when the volume is
> >zero. We can forget about why anyone would want to do this. It can be
> >done and it would be 100% consistent rather than 15% consistent like it is
> >for most data providors.
> >
> >My question for you, however, is how do the various indicators and moving
> >average calculations deal with un-padded data holes. If I do a 5-day MA,
> >for instance, and one of the days has no data, what would I get for the
> >MA? Same for RSI or any other indicator. It's taken me years to get
> >rid of data holes and find a data providor who will consistently pad them
> >for me so that indicators and other calculations work properly (IMO).
> >
> >I could test to see how some of these calculations are affected... if only
> >I had some data holes!!
> >
>
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