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Post From: Confused of difference between SCFloatArray and scFloatArrayRef

[2013-10-07 18:24:35]
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gabby alindogan - Posts: 49
Hello. I am a little confused about the use of scfloatarrayref vs. scFloatArray. I created identical studies below-the top one uses scfloatarrayref, the other just scfloatarray. They yield difference results. Can someone please explain the difference and when one should use 1 over the other? THANKS.


SCSFExport scsf_Sigma3(SCStudyInterfaceRef sc)
{
  if (sc.SetDefaults)
  {
    sc.AutoLoop=1;
    sc.GraphName = "SigmawArrayRef" ;
    sc.Subgraph[0].Name = "Spike3 ";
    sc.AutoLoop=1;
    sc.FreeDLL = 1;
    return;
  }
    SCFloatArrayRef Close1BB = sc.Subgraph[0].Arrays[0];
    SCFloatArrayRef Close2BB = sc.Subgraph[0].Arrays[1];
    SCFloatArrayRef Cl2ClLog = sc.Subgraph[0].Arrays[2];
    SCFloatArrayRef Sigma  = sc.Subgraph[0].Arrays[3];
    SCFloatArrayRef DollarSigma = sc.Subgraph[0].Arrays[4];
    SCFloatArrayRef Delta = sc.Subgraph[0].Arrays[5];
    SCFloatArrayRef Spike1BB = sc.Subgraph[0].Arrays[6];
    Close1BB[sc.Index] =sc.Close[sc.Index-1];
    Close2BB[sc.Index] =sc.Close[sc.Index-2];
    Delta[sc.Index] = Close1BB[sc.Index]-Close2BB[sc.Index];
    Cl2ClLog[sc.Index] = log(Close1BB[sc.Index] / Close2BB[sc.Index]);
    sc.StdDeviation(Cl2ClLog,Sigma,480);
    DollarSigma[sc.Index] = Sigma[sc.Index] * Close1BB[sc.Index];
    Spike1BB[sc.Index]=Delta[sc.Index] / DollarSigma[sc.Index];
    sc.Subgraph[0][sc.Index] =Spike1BB[sc.Index];
    return;    
}

SCSFExport scsf_Sigma4(SCStudyInterfaceRef sc)
{
  // Section 1 - Set the configuration variables
  if (sc.SetDefaults)
  {
    sc.AutoLoop=1;
    sc.GraphName = "Sigma4 " ;
    sc.Subgraph[0].Name = "Spike in Sigmas ";
    sc.AutoLoop=1;
    sc.FreeDLL = 1;
    return;
  }
    SCFloatArray Close1BB ;
    SCFloatArray Close2BB ;
    SCFloatArray Cl2ClLog ;
    SCFloatArray Sigma;
    SCFloatArray DollarSigma ;
    SCFloatArray Delta;
    SCFloatArray Spike1BB ;
    Close1BB[sc.Index] =sc.Close[sc.Index-1];
    Close2BB[sc.Index] =sc.Close[sc.Index-2];
    Delta[sc.Index] = Close1BB[sc.Index]-Close2BB[sc.Index];
    Cl2ClLog[sc.Index] = log(Close1BB[sc.Index] / Close2BB[sc.Index]);
    sc.StdDeviation(Cl2ClLog,Sigma,480);
    DollarSigma[sc.Index] = Sigma[sc.Index] * Close1BB[sc.Index];
    Spike1BB[sc.Index]=Delta[sc.Index] / DollarSigma[sc.Index];
    sc.Subgraph[0][sc.Index] =Spike1BB[sc.Index];
    return;    
}