How to build a ( Bid+Ask)/2 indicator

[pstrusi]

I'd like to have a simple (Bid+ask)/2 indicator to plot in a chart, for several time-frames..since I'm not a programmer I'm struggling to construct it...any help would be appreciated

[bukkan]

I'd like to have a simple (Bid+ask)/2 indicator to plot in a chart, for several time-frames..since I'm not a programmer I'm struggling to construct it...any help would be appreciated

(GetCurrentBid() + GetCurrentAsk()) / 2

this should get you started. the above is for the primary series. if you had added additional data series then simply modify the above code to

(GetCurrentBid(1) + GetCurrentAsk(1)) / 2; //1 representing the 2nd data series.

[pstrusi]

Thanks Bukkan, studying the manual I built this code but I can see it isn't ok...can you please check it and tell me what to correct?

Code:
protected override void Initialize()
{
Add(new Plot(Color.FromKnownColor(KnownColor.Orange), PlotStyle.Line, "Mpoint"));
CalculateOnBarClose = false;
Overlay = true;
myDataSeries = new DataSeries(this); // this refers to the indicator/strategy itself
// and syncs the DataSeries object to historical
// data bars
}

/// <summary>
/// Called on each bar update event (incoming tick)
/// </summary>
protected override void OnBarUpdate()
{
// Use this method for calculating your indicator values. Assign a value to each
// plot below by replacing 'Close[0]' with your own formula.
// Calculate the range of the current bar and set the value
myDataSeries.Set((GetCurrentBid(0) + GetCurrentAsk(0))/2);
Mpoint.Set(myDataSeries[0]);
}

[pstrusi]

I meant: it works calculating and plotting, but the calculation is not ok...I compared with actual charts from IB and results are not ok

[pstrusi]

A little example of what I found:

For any bar, we had Bid 1243.50 Ask 1243.75; then the midpoint should be 1243.625 but the indicator shows either 1243.5 or 1243.75.

The formula is ok, variables...etc but still not ok

[bukkan]

A little example of what I found:

For any bar, we had Bid 1243.50 Ask 1243.75; then the midpoint should be 1243.625 but the indicator shows either 1243.5 or 1243.75.

The formula is ok, variables...etc but still not ok

the best way to check the value will be to check the same in the OutputWindow

Print("Bid: " + GetCurrentBid().ToString() + " Ask: " + GetCurrentAsk().ToString() + " Avg: " + ((GetCurrentBid() + GetCurrentAsk()) / 2).ToString());

[bukkan]

Also I dont see the need for the additional dataseries in your code. Just put the calculated variable in the main plot itself.

[pstrusi]

Bukkan, all bid/ask of entire series are always the same...that is what is happening, do you know why or how can I correct it? Finally I see this in the output window

[pstrusi]

I've checked well in my database and all Bid/ask are ok, but somehow the functions getcurrentbid and ask are having problem,

[bukkan]

I've checked well in my database and all Bid/ask are ok, but somehow the functions getcurrentbid and ask are having problem,

are the mkts open. make sure about that.

edit, aslo make sure you put

if (Historical) return;

the GetCurrentBid GetCurrentAsk is for RT quotes only.

[pstrusi]

Since I need to exhaust several historical analysis with other indicators, it's very important to me that I can get the whole historical calculation bar by bar; I'll try "if (Historical) return;" maybe with it it coud have the right output.

Thanks for your good attention