200 EMA not showing up
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For which instrument do you encounter this problem? To properly calculate an exponential moving average, you’ll need at least the double amount of candlesticks than the chosen period.
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In your screenshot even if 10000 units is selected, there doesn’t seem to be enough history for this stock, we can see your horizontal scroll bar showing there is very little missing from the left side of the screen, there’s certainly not 10000 candles loaded here with a scroll bar like this, we can even see the birth of the red and green ema’s which I guess from your 20;50;100;200 selection are the 50 and 100… and we are less than an extra 100 candles away from the birth of green ema100 so it’s normal there’s no ema200 yet…
So the problem is not about ema200 not appearing, it’s about history either not available or not loaded. Can’t see why your 30 mins can’t reach the 10000 candles loaded… apart from the obvious “stock has been recently introduced” as the case may be for a few, but that can’t be for all of them.
Sorry can’t help further than determining it’s a “history not loading” rather than “ema not appearing” problem for now…
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Depending on both type of market and type of version of prt (complete vs premium), the history limitation would differ from timeframe to timeframe – example of such history differences here for CFD’s: http://ee.md.it-finance.com/IGIndex/features_premium.phtml?locale=en_GB
So first thing to check to understand this history limitation would be max history available for US stocks for 30 minutes given with your subscription, might be different from the 1 hour one. However the screenshot shows an awfully short history, I would guess even if 30 minutes history limits is not great, it can’t be that short, that feels way too short, there must be something else going on… How many graphs at the same time are you running in this workspace?
Also, it might be worth trying to select your history length in “time” amount rather than “units”? For example choose “3 months” rather than “10000 units” (I remember that helped me once for x tick charts, maybe it would do the trick for 30mins chart too?)
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Ok, I just made an experiment, I have a busy working space too, and like you my 30 minutes chart (even if on french and euopean cfd’s rather than US stocks) was going only around a month back (nov 25th) if 30 minutes timeframe, but because it’s cfd 24h chart, I have 48 candles of 30 minutes per day rather than only 13 for 6.5 hours per day for US stocks, so ema200 would work for cfd’s, but that’s not my point, I mean my point is I am trying to replicate same number of days history limitations as you.
So, if I switch to “3 months”, it goes to daily timeframe too, and if I switch then to “30 minutes”, it goes back to 200 units. So up to this point, same as you, which means maybe being US stocks doesn’t change PRT behaviour compared with my European CFD’s.
Now, next part of the experiment is: I have closed all my charts except one: the 30 minutes one. I now have one chart open only, with timeframe 30 minutes. I then change the 200 units to 10000 units, and there it finally loads up a lot more history (march 8th 2016).
So I suppose there is some sort of memory allocation inside PRT that prevents using the whole 30 minutes history when running too many charts at the same time (haven’t tried if it still works with 2, 3, 4 charts, only did it with just the one).
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