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Strategies & Market Trends : TA-Quotes Plus -- Ignore unavailable to you. Want to Upgrade?

To: Bob Jagow who wrote (9154)	3/30/1999 8:04:00 AM
From: Nine_USA	Respond to of 11149

Bob, <<Except for splits, all updates are weekly. The same sort of thing was done by many of us for SCharts when the Access db was overwritten weekly and also for the Prodigy FA db. Seems to me that you could point the QP API at weekly snapshots. Split data doesn't need to be incrementally saved because the full history is, of course, always available>> The splits history (which in QP is not always full, nor up to date) is OK for READING. But, I wouldn't want to involve its tangle in any scan I write, even if QP2 gave me access to it. What about other changes in totalshares outstanding like secondaries, or share buybacks, or stock dividends. Theses changes in total shares materially affect several variables. Putting the correctness of variable treatment aside, what I find extremely valuable, is the total flexibility and speed I get from being able to use a programming language rather than the QP scan for analysis. Also, I feel by using a snapshot of the QP database, for any past time frame, I am, per se, dealing with data as it would have appeared to any QP2 scan done on that day in the past. The matter of speed is not merely one of convenience. Working to find a better way to do formula weightings for many variables is practical if an iteration over 6000 stocks takes 5 seconds. If it takes 10 minutes to modify a scan, do it, and then deal with eyeballing the rough output, that is an inhibiting factor to say the least.