How are Indicator values calculated?

[iRick]

Just wondering in Strategy Tester how the indicator values (iMA, iADX... etc) are calculated, does it use the hst or fxt files?

I'd never test a strategy (in tester) using the high timeframes, Month, Week, Day etc but I use indicators values based on the high timeframes

If I only run strategy tester using (1M, 15M and 1H) do I still need to download the other timeframe data from Tickstory or can it calculate these values from the hst files (which seem to all get created)

[iRick]

The reason, is that when you run the back-test and access data of other time-frames, the Strategy Tester accesses the ".hst" files and not ".fxt". Arrays such as Close[], High[], Volume[] access the ".fxt" data, but functions such as iClose(), iHigh(), iVolume() accesses the ".hst" data.

I think this is what I'm after.... so now I'm thinking I only need to download the fxt timeframes from Tickstory that I use in testing.... therefore saving on a lot of space