MarketData and Volumetric don't match on the open of the first session bar

[Bikotoru]

I have a strategy that collects the data from the MarketData to create orderflow bars, but comparing the data that I get, with the data from the volumetric bars, I have noticed that on every open of the firs session bar, the data don't match.


I don't know if is an erro of my part or of the volumetric bars, but here is how I'm populating my bars.


protected override void OnMarketData( NinjaTrader.Data.MarketDataEventArgs e ){
if( e.MarketDataType == NinjaTrader.Data.MarketDataType.Last ){
if( CurrentBars[ 0 ] < 0 || BarsInProgress > 0 )
return;

double rounded = RoundToTickSize( e.Price );

if( e.Price <= e.Bid ){
bars[ 0 ][ rounded, Cluster.Long.BidVolume ] += e.Volume;
}else if( e.Price >= e.Ask ){
bars[ 0 ][ rounded, Cluster.Long.AskVolume ] += e.Volume;
}
}

The "bars" are a Series of my custom class that represents the bars, and on it's logic it places the volume on the difernt levels of prices.

As you can see on the images the other data except for the open of the first bar of the session matches exactly as the volumetric bars.

[NinjaTrader_ChrisL]

Hi Bikotoru, thanks for your post and welcome to the NinjaTrader forum.

We have a default indicator called "BuySellVolume" which will be a good reference for this. That can be found in the Indicators folder. The Volumetric bar's total volume is the same as BuySellVolume on my chart.

Kind regards,

-ChrisL

[Bikotoru]

Hi ChrisL, thanks for your replay.

The BuySellVolume indicator stores the total of the buys and sells of a bar, and what I'm pointing out is that there is a diference on the open price of the bar, like the pictures show, all the other bars match exactly, so why the open of the first bar of a session is diferent?

[NinjaTrader_ChrisL]

Hi Bikotoru, thanks for your reply.

Please re-post your screen shots. I do not see them in your original post.