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what is Ninja so different than stockcharts.com?
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what is Ninja so different than stockcharts.com?
I have noticed on several occasions, that the indicators produced by stockcharts tend to be much more 'dynamic' than those of NT. What I mean is that stockcharts tend to show more relative movement in their indicators vs. ninja given the same set up. If I have an indicator that I like in stockcharts, when I go to reproduce the NT version, it tends to be relatively flat. Has anyone ever compared the calculations for stockcharts vs. ninja and found any fundamental difference in the approach to how indicators (or charts for that matter) are calculated/created? It seems that most of the calculations for stockcharts follow closely to the originators formulas. What about NT?Tags: None
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You can compare them side by side, just look at the code for the indicators you're talking about. Tools > Edit Ninjascript > Indicator. Though if I had to guess, I'd say the difference you're seeing is probably due to the scaling rather than the way the indicator is being calculated.
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Originally posted by billr View PostI have noticed on several occasions, that the indicators produced by stockcharts tend to be much more 'dynamic' than those of NT. What I mean is that stockcharts tend to show more relative movement in their indicators vs. ninja given the same set up. If I have an indicator that I like in stockcharts, when I go to reproduce the NT version, it tends to be relatively flat. Has anyone ever compared the calculations for stockcharts vs. ninja and found any fundamental difference in the approach to how indicators (or charts for that matter) are calculated/created? It seems that most of the calculations for stockcharts follow closely to the originators formulas. What about NT?
Are you looking intraday? Daily?
Log or Arithmetic charts?
ema's? adx? macd's?
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Radical and sledge, thanks for your posts. I think you are correct that it is a function of scale. I am usually careful about letting something simple like that catch me, but I was frustrated with a data problem (I think) that is causing large flat spots in StochRSI. I checked the calculations and they seem consistent. What I thought was my example for today was corrected when I noticed the stockcharts was set to log. Previously, I ran into an instance where NT would correctly show ATR as a single point at each bar whereas Stockcharts apparently used the difference between points to create bars. This triggered some issues of 'flat' charts. (I am helping someone with indicators so I don't have too much experience in daily use of those in particular and almost none in stockcharts.)
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We're generally using industry standard formulas behind our default indicators shipped with NinjaTrader, each formula could be of course reviewed in our NinjaScript editor.
For the differences, I would believe it's most likely due to the differences in data used - we would also have an option to split adjust data, have you checked it out?
BertrandNinjaTrader Customer Service
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