[amibroker] Re: TimeFrames: Is their use flawed?

["af_1000000" <af_1000000@xxxxxxxxx>]

I have not tried more complex indicators for one simple reason. If the higher timeframe compressed data contains all values I need (including incomplete last bar) I do not have to do anything . Build in indicators and my scripts will do everything for me. You calculate indicators on higher timeframe and expand them on a lower timeframe. If data compression on higher timeframe does not include everything you need you have to combine somehow data on higher timeframe with data on lower timeframe and invent new implementation of the indicators or create new intelligently combined weekly and data array, so build in indicators can use this array. That's why my preference is to fix data compression on the higher timeframe first before I start thinking about an exotic stuff.
So far, I have used multiple charts to avoid unnecessary programming.
I do not understand why you would use "expandFirst". Create two charts higher and lower timeframe in a layout and play bar by bar. I believe the code is correct. Of course, I did not test every possible case, that's why you found few mistakes. The main objective was to prove the concept and highlight the differences between "traditional" method and your method. 
Sometimes loops are more efficient than  array processing especially when you use lastvalue, nested barssince, nested valuewhen,.. etc. Every situation is unique, so it is hard to say in advance what is the best implementation. Always check "Code check $ Profile" and "Display chart timing".

Regards,

AF



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