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Errr - Too many JD's at that point. Forget I made that post.
Michael.
At 01:09 AM 2/01/2004, you wrote:
>I don't get this. If a stock doesn't trade for a bar, there's some
>justification for saying its price is the price of the last trade, though
>I could also see ignoring that bar completely. But how does the price of a
>stock change if it's neither bought nor sold? How is price determined in
>that case? Neither bid or ask is actually price if nobody trades.
>
>Dave
>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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