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RTs;
I'm going to switch vendors for end-of-day historical and update
data. I've used SuperCharts and played around a bit with TS. I did a
little back testing using the (limited) data provided with SC. I used
DialData for my EOD updating. I had trouble understanding Omega's
recommendations for historical testing and optimizing, and some time
ago, I questioned Omega's people (including Bill Cruz) and Dial Data.
However, I didn’t get the information I was after before my poor
health forced me to stop trading for a while. I'm starting up again,
and do NOT want to use DialData.
I have paid attention to the general recommendations (and “stay
aways”) on this and other forums and have a good idea of which
vendor(s) I will consider. But first, I'm working on gaining a better
understanding (the advantages and disadvantages) of the various types
of historical data and roll over methodologies available from data
providers. I want to check the group’s current consensus as to which
is the "best" method to use in SC/TS so as to most accurately reflect
how trading is actually done.
My testing concerns include wanting to be able to roll over from
(historical) contract to contract without trading each contract
through its entire life (i.e. trade only the last months of each near
contract, then roll to the next at a reasonable point short of the
FND or LTD). The data must, of course, be "adjusted", but again which
method is "best"? Proportional (Ratio Adjusted Data (RAD)? The
pitches I've seen for that make a lot of sense to me. Do you folks
agree?
Omega warned that using data other than from their two "approved"
sources would not be "seamless". As I understand it, this means that
I might have trouble “converting” others’ initial historical data and
then updating it with current EOD downloads so as to be able to chart
and test up-to-date daily, weekly or monthly bars. I gather it can be
done, but the way it is described seems unacceptably difficult to do
on a regular basis. I would like to hear from anyone with experience
with a “best” method who can tell me exactly how truly and fully
"compatible" ("seamless") it is with SC/TS and from which vendor(s) I
can get it.
Thanks for your attention to my questions.
Jim
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