Need help modifying an existing SC study

February 1st, 2016, 08:54 PM

I want to modify the stock 'Highest High Lowest Low over N bars' study to include the "use current bar value" input (see below)

I have been able to hack this piece of code into some of the easier studies (SCStudyGraphRef sg.) but not the more complex (SCStudyInterfaceRef sc.)

Code

sg.Input[5].Name="Use current bar value?";
sg.Input[5].SetYesNo(0);  // No

Here is the code for HH LL over N bars from STUDIES7.cpp

Thanks in advance for any help

Code

/*==========================================================================*/
SCSFExport scsf_HighestHighLowestLowOverNBars(SCStudyInterfaceRef sc)
{
	SCSubgraphRef HighestHigh = sc.Subgraph[0];
	SCSubgraphRef LowestLow = sc.Subgraph[1];

	SCInputRef Length = sc.Input[3];
	SCInputRef InputDataHigh = sc.Input[5];
	SCInputRef InputDataLow = sc.Input[6];

	if (sc.SetDefaults)
	{
		sc.GraphName = "Highest High / Lowest Low Over N Bars";

		sc.GraphRegion = 0;
		sc.AutoLoop = 1;

		HighestHigh.Name= "Highest High";
		HighestHigh.DrawStyle = DRAWSTYLE_LINE;
		HighestHigh.PrimaryColor = RGB(0,255,0);
		HighestHigh.DrawZeros = true;

		LowestLow.Name = "Lowest Low";
		LowestLow.DrawStyle = DRAWSTYLE_LINE;
		LowestLow.PrimaryColor = RGB(255,0,255);
		LowestLow.DrawZeros = true;

		Length.Name = "Length";
		Length.SetInt(5);
		Length.SetIntLimits(1, MAX_STUDY_LENGTH);

		InputDataHigh.Name = "Input Data High";
		InputDataHigh.SetInputDataIndex(SC_HIGH);

		InputDataLow.Name = "Input Data Low";
		InputDataLow.SetInputDataIndex(SC_LOW);

		return;
	}

	sc.DataStartIndex = Length.GetInt()  - 1;

	if (sc.Index < sc.DataStartIndex)
		return;

	double Lowest = FLT_MAX;
	double Highest = -FLT_MAX;
	for(int BarIndex = sc.Index - (Length.GetInt() - 1); BarIndex <= sc.Index; BarIndex++)
	{
		if(Highest < sc.BaseDataIn[InputDataHigh.GetInputDataIndex()][BarIndex])
			Highest = sc.BaseDataIn[InputDataHigh.GetInputDataIndex()][BarIndex];

		if(Lowest > sc.BaseDataIn[InputDataLow.GetInputDataIndex()][BarIndex])
			Lowest = sc.BaseDataIn[InputDataLow.GetInputDataIndex()][BarIndex];
	}

	HighestHigh[sc.Index] = (float)Highest;
	LowestLow[sc.Index] = (float)Lowest;
}

February 2nd, 2016, 03:03 PM

I have created a version that I think does what you want.

Hope this helps.

February 2nd, 2016, 08:45 PM

Thanks!

Will give it a go.

Need help modifying an existing SC study

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Need help modifying an existing SC study