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If you look at the three sets of data they don't all match.
The data is much different each trading day on all!
How could you contruct a chart of A/D line with inaccurate data from
Yahoo? Which of the three would be believe is correct?
http://www.nyse.com/
(The NYSE Exchange Data)
vs.
http://finance.yahoo.com/advances
(Yahoo Data)
vs.
http://askmerrill.ml.com/markets_diaries/
(Merrill Lynch Data)
--- In amibroker@xxxxxxxxxxxxxxx, "Ed Hoopes" <reefbreak_sd@xxx>
wrote:
>
> I'm trying to import Yahoo! data for the symbol ^NYA - the NYSE
> composite index.
>
> The *.csv Volume field has NYSE total volume that currently is
running
> around 2 billion shares/day. When I examine the *.csv file in
Excel,
> the volume is different from day-to-day as expected. BUT when it is
> imported into AmiBroker, most of the volume numbers are all the
same
> - around 2.147. . . billion.
>
> My suspicion is that this is a 32 bit signed INTEGER data type.
2^32
> / 2. Is this correct?
>
> My goal is to use the volume to construct an A/D line for the NYSE.
> A/D involves adding/subtracting - but if I'm up against an
internal
> limit of AB maybe that is not possible.
>
> Any suggestions??
>
> Ed Hoopes
> AKA ReefBreak
>
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