Murthymsr, been quite some time -- feels good to hear from you.
I have not used AB/QT in the way you have described; so may not be able to answer your queries or help specifically. However, some notings follow.
1a. It would have been ideal to get historical EOD data from QT itself. A portfolio, with all NSE symbols, could be created in QT and historical data update done for that portfolio at the end of the trading day. But I have not been successful in achieving this and have not asked QT support either.
1b. The downside to using QT's historical EOD, if possible, would have been that one could not split/bonus adjust the data in AB as it may likely get overwritten.
2a. It does not seem possible to delete intraday data that is currently cached in QT. After deletion via the Quote Editor, the data refreshes from QT. This is the case where Local Data Storage is disabled in AB.
2b. If Local Data Storage is enabled, deletion of intraday quotes is possible and they do not get refreshed from QT. You could toggle this on/off and experiment. The recommended way to delete a set of quotes is to mark a start time/end time and use Edit -> Delete Session to delete all quotes for all symbols for this time period -- however, this did not work for me (AB 4.90).
2c. What I used to do was use QT to update for the day. Since QT often misses the open/high/lows, this data could not be a reference, At end-of-day, I would manually delete quotes (all the QT updated symbols were in favourites), and then import 1-min data from investbulls. You would also need some grouping of the QT sourced symbols as the bhavcopy symbols would be a superset.
3a. Getting EOD data in via the GetBhavCopy route appears okay in theory. Since the intention behind mixed mode was possibly aimed at the same data source providing both, the one tripper in practise could be time offsets since EOD data is not time-stamped. You would have to check this out. An alternate is to write a small utility to time-stamp the GetBhavcopy data.
3b. You would have to first delete previous days quotes first (with local storage enabled), then import bhavcopy data. Do not know of any other way to do this.
3c. Are you only going to run indicators/explorations on a daily timeframe only? If not, 5 min indicators would need previous day's intraday values, specially near start of day.
As said at the outset, have not used AB this way. Let us know how your experiment goes.
I have not used AB/QT in the way you have described; so may not be able to answer your queries or help specifically. However, some notings follow.
1a. It would have been ideal to get historical EOD data from QT itself. A portfolio, with all NSE symbols, could be created in QT and historical data update done for that portfolio at the end of the trading day. But I have not been successful in achieving this and have not asked QT support either.
1b. The downside to using QT's historical EOD, if possible, would have been that one could not split/bonus adjust the data in AB as it may likely get overwritten.
2a. It does not seem possible to delete intraday data that is currently cached in QT. After deletion via the Quote Editor, the data refreshes from QT. This is the case where Local Data Storage is disabled in AB.
2b. If Local Data Storage is enabled, deletion of intraday quotes is possible and they do not get refreshed from QT. You could toggle this on/off and experiment. The recommended way to delete a set of quotes is to mark a start time/end time and use Edit -> Delete Session to delete all quotes for all symbols for this time period -- however, this did not work for me (AB 4.90).
2c. What I used to do was use QT to update for the day. Since QT often misses the open/high/lows, this data could not be a reference, At end-of-day, I would manually delete quotes (all the QT updated symbols were in favourites), and then import 1-min data from investbulls. You would also need some grouping of the QT sourced symbols as the bhavcopy symbols would be a superset.
3a. Getting EOD data in via the GetBhavCopy route appears okay in theory. Since the intention behind mixed mode was possibly aimed at the same data source providing both, the one tripper in practise could be time offsets since EOD data is not time-stamped. You would have to check this out. An alternate is to write a small utility to time-stamp the GetBhavcopy data.
3b. You would have to first delete previous days quotes first (with local storage enabled), then import bhavcopy data. Do not know of any other way to do this.
3c. Are you only going to run indicators/explorations on a daily timeframe only? If not, 5 min indicators would need previous day's intraday values, specially near start of day.
As said at the outset, have not used AB this way. Let us know how your experiment goes.
