Volume print and diiference about doom

[faustf]

hi guys sorry for the question, i print a volume (in ninjascript out ) with this part of code

protected override void OnMarketData(MarketDataEventArgs e)

{
try
{
Print(e.Price.ToString() + " " + e.Volume.ToString());
}
catch
{
Print("Data file busy...");
}
}

but i notice when print price and volume in limit column not effective
explain much better in the foto
thankz

[NinjaTrader_Jesse]

Hello faustf,

One problem with your Print is that you are not filtering the type of market data, what volume are you trying to print here? You need to specify what data you want the volume from:
if (marketDataUpdate.MarketDataType == MarketDataType.Last)

Another problem with this comparison is that the DOM has a fixed refresh rate where the print does not, you may not see this always match due to that.

From the text in the Image I am not certain what you are asking, can you rephrase what you said in the image?


I look forward to being of further assistance.

[faustf]

i find a solution thankz
if (e.MarketDataType == MarketDataType.Last)
{
Print("LAST PRICE -- "+e.Price+" VOLUME -- " +e.Volume);
}

but i have another questions

exist ask price , bid price and last price
ask price is price for ask , but the two counterparts were not exchange
bid price is pride for bid , but the two counterparts were not exchange
last price is when people ask , and people bid macth and happen exchange ?

is correct my thinking ?

[NinjaTrader_Jesse]

Hello faustf,

I am not certain I understand what you are asking here, are you asking what ask bid and last are?

If you are asking about the definitions of these terms I would suggest to use public trading information websites like Investopedia: https://www.investopedia.com/ask/ans...asknumbers.asp

I look forward to being of further assistance.