#include "sierrachart.h"

SCDLLName("PercentageChange") 
/*==========================================================================*/
SCSFExport scsf_PercentageChange(SCStudyInterfaceRef sc)
{
	SCSubgraphRef Plot1 = sc.Subgraph[0];
	
	SCInputRef multiple	= sc.Input[0];
	SCInputRef inputselect	= sc.Input[1];
	
	if (sc.SetDefaults)
	{
		sc.GraphName = "Percentage Change";
						
		sc.AutoLoop = true;
		sc.FreeDLL = 0;
				
		Plot1.Name = "Percentage Change";
		Plot1.LineWidth = 1;
		
		multiple.Name = "Multiplier";
		multiple.SetInt(1);
		
		inputselect.Name = "Open/PriorClose Selection";
		inputselect.SetCustomInputStrings("Open;PriorClose");
		inputselect.SetCustomInputIndex(0);
				
		return;
	}
	// Do data processing
	if (sc.Index > 1)
	
	{
	
	if(inputselect.GetIndex() == 0)
		{
			Plot1[sc.Index] = ((sc.Close[sc.Index] - sc.Close[sc.Index-1])/sc.Close[sc.Index-1])*100*multiple.GetInt();
		}
	else Plot1[sc.Index] = ((sc.Close[sc.Index] - sc.Open[sc.Index])/sc.Open[sc.Index])*100*multiple.GetInt();
		
	}
}