Market Replay dataFeatured
Do u have any Market Replay data available for NT6 for testing? (not what NT calls historical data)
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I am not sure if you got the previous email so I am sending it again.
I don't replay or record market data - so none avaialable
On 10/21/2010 9:03 AM, MicroTrends Tom wrote:
Interesting, with all the disclaimers that NT has about backtesting with
historical data,, how do u backtest strategies ?
I have used replay (which matched exactly a days trading/stats and
historical data and get two vastly different results at time.. Or do u
limit ur testing to XXXXXX?
I use historical data for backtesting which is purchased from provders such as:
or i just use the data that NT stores from the realtime account connection as historical chart data - when you scroll left on a chart that is what this is and you can see it stored at:
\My Documents\NinjaTrader 7\db
Market Replay data is generally recorded and used to replay a session - you can for example record a session and play it back - and trade it as if you are a market wizard or you can even set a robot to trade it like magic... I am not sure it has a use for real traders i do see many
unscrupulous software vendors marketing ads who cannot and dont trade for a living gloss up their products and show the best case example to ensnare poor innocent victims - I have banned it's use within MciroTrends - you will only ever see live account trading with real money here.. That is a cheap thing to do using Forex.
I cannot comment on the replay data - differences - I have never used i but:
Things to bear in mind regarding baktesting is:
Market session time settings
Bars built are based on local pc time
Data should only be used supplied from the broker data you trade with
Slippage is not accurate
Data back filling
You can only ever hope to get a rough idea of what it is going to do...
I have some data for NT7 at:
Hypothetical performance results have many inherent limitations, some of which are described below. No representation is being made that any account will or is likely to achieve profits or losses similar to those shown. In fact, there are frequently sharp differences between hypothetical performance results and the actual results subsequently achieved by any particular trading program. One of the limitations of hypothetical performance results is that they are generally prepared with the benefit of hindsight. In addition, hypothetical trading does not involve financial risk, and no hypothetical trading record can completely account for the impact of financial risk in actual trading. For example, the ability to withstand losses or to adhere to a particular trading program in spite of trading losses are material points which can also adversely affect actual trading results. There are numerous other factors related to the markets in general or to the implementation of any specific trading program which cannot be fully accounted for in the preparation of hypothetical performance results and all of which can adversely affect actual trading results
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