public void testPi_D()
{
bool OSProc = System.Environment.Is64BitProcess;
REngine.SetEnvironmentVariables();
REngine engineObj = REngine.GetInstance();
// Loading a library from R
engineObj.Evaluate("library(catR)");
// Dichotomous Items
DataFrame DichoItems = engineObj.Evaluate("DichoItems <- genDichoMatrix(items = 100)").AsDataFrame();
engineObj.SetSymbol("DichoItems", DichoItems);
// Adapting with the existing "CAT-Items" type (Wrapper)
CATItems itemBank = new CATItems(DichoItems[0].Select(y => (double)y).ToArray(), DichoItems[1].Select(y => (double)y).ToArray(),
DichoItems[2].Select(y => (double)y).ToArray(), DichoItems[3].Select(y => (double)y).ToArray());
#region "Test block for Ability Values (th)"
PiList objPI = null;
int decimalPoint = 4;
double[] th_Values = CatRcs.Utils.CommonHelper.Sequence(-6, 6, by: 1);
Console.WriteLine("******* TEST for Ability value Theta ********");
for (int k = 0; k < th_Values.Length; k++)
{
// Sequence Generation for Theta (Ability) values
NumericVector th_val = engineObj.CreateNumericVector(new double[] { th_Values[k] });
engineObj.SetSymbol("th_val", th_val);
// Calling the "Pi" from R
GenericVector result_Pi = engineObj.Evaluate("result_Pi <- Pi(th = th_val, DichoItems, D = 1)").AsList();
// Getting the function result
NumericVector Pi = result_Pi[0].AsNumeric();
NumericVector dPi = result_Pi[1].AsNumeric();
NumericVector d2Pi = result_Pi[2].AsNumeric();
NumericVector d3Pi = result_Pi[3].AsNumeric();
Console.WriteLine("Value of Theta: " + th_Values[k]);
objPI = CatRLib.Pi_D(th_Values[k], itemBank, "", 1);
#region "Pi"
int z = 0;
resultFlag = true;
Console.WriteLine("****** Pi ******");
for (int i = 0; i < Pi.Length; i++)
{
z = i + 1; // item number
if (decimal.Round(Convert.ToDecimal(Pi[i]), decimalPoint) != decimal.Round(Convert.ToDecimal(objPI.Pi[i]), decimalPoint))
{
//Console.WriteLine("Test for Item No. # " + z + " is not Passed!");
resultFlag = false;
}
}
Assert.IsTrue(resultFlag, "Passed");
Console.WriteLine("Values of Pi are Matched!");
#endregion
#region "dPi"
z = 0;
resultFlag = true;
Console.WriteLine("****** dPi ******");
for (int i = 0; i < dPi.Length; i++)
{
z = i + 1; // item number
if (decimal.Round(Convert.ToDecimal(dPi[i]), decimalPoint) != decimal.Round(Convert.ToDecimal(objPI.dPi[i]), decimalPoint))
{
//Console.WriteLine("Test for Item No. # " + z + " is not Passed!");
resultFlag = false;
}
}
Assert.IsTrue(resultFlag);
Console.WriteLine("Values of dPi are Matched!");
#endregion
#region "d2Pi"
z = 0;
resultFlag = true;
Console.WriteLine("****** d2Pi ******");
for (int i = 0; i < d2Pi.Length; i++)
{
z = i + 1; // item number
if (decimal.Round(Convert.ToDecimal(d2Pi[i]), decimalPoint) != decimal.Round(Convert.ToDecimal(objPI.d2Pi[i]), decimalPoint))
{
//Console.WriteLine("Test for Item No. # " + z + " is not Passed!");
resultFlag = false;
}
}
Assert.IsTrue(resultFlag);
Console.WriteLine("Values of d2Pi are Matched!");
#endregion
#region "d3Pi"
z = 0;
resultFlag = true;
Console.WriteLine("****** d3Pi ******");
for (int i = 0; i < d3Pi.Length; i++)
{
z = i + 1; // item number
if (decimal.Round(Convert.ToDecimal(d3Pi[i]), decimalPoint) != decimal.Round(Convert.ToDecimal(objPI.d3Pi[i]), decimalPoint))
{
//Console.WriteLine("Test for Item No. # " + z + " is not Passed!");
resultFlag = false;
}
}
Assert.IsTrue(resultFlag);
Console.WriteLine("Values of d3Pi are Matched!");
#endregion
}
Assert.IsTrue(resultFlag);
#endregion
#region "Test block for Metric values"
objPI = null;
double[] D_Values = CatRcs.Utils.CommonHelper.Sequence(0.5, 1, by: 0.1);
Console.WriteLine("******* TEST for Metric Constant ********");
for (int k = 0; k < D_Values.Length; k++)
{
// Sequence Generation for Theta (Ability) values
NumericVector D_val = engineObj.CreateNumericVector(new double[] { D_Values[k] });
engineObj.SetSymbol("D_val", D_val);
// Calling the "Pi" from R
GenericVector result_Pi = engineObj.Evaluate("result_Pi <- Pi(th = 0, DichoItems, D = D_val)").AsList();
// Getting the function result
NumericVector Pi = result_Pi[0].AsNumeric();
NumericVector dPi = result_Pi[1].AsNumeric();
NumericVector d2Pi = result_Pi[2].AsNumeric();
NumericVector d3Pi = result_Pi[3].AsNumeric();
Console.WriteLine("Value of Metric constant: " + D_Values[k]);
objPI = CatRLib.Pi_D(0, itemBank, "", D_Values[k]);
#region "Pi"
int z = 0;
resultFlag = true;
Console.WriteLine("****** Pi ******");
for (int i = 0; i < Pi.Length; i++)
{
z = i + 1; // item number
if (decimal.Round(Convert.ToDecimal(Pi[i]), decimalPoint) != decimal.Round(Convert.ToDecimal(objPI.Pi[i]), decimalPoint))
{
//Console.WriteLine("Test for Item No. # " + z + " is not Passed!");
resultFlag = false;
}
}
Assert.IsTrue(resultFlag);
Console.WriteLine("Values of Pi are matched!");
#endregion
#region "dPi"
z = 0;
resultFlag = true;
Console.WriteLine("****** dPi ******");
for (int i = 0; i < dPi.Length; i++)
{
z = i + 1; // item number
if (decimal.Round(Convert.ToDecimal(dPi[i]), decimalPoint) != decimal.Round(Convert.ToDecimal(objPI.dPi[i]), decimalPoint))
{
//Console.WriteLine("Test for Item No. # " + z + " is not Passed!");
resultFlag = false;
}
}
Assert.IsTrue(resultFlag);
Console.WriteLine("Values of dPi are matched!");
#endregion
#region "d2Pi"
z = 0;
resultFlag = true;
Console.WriteLine("****** d2Pi ******");
for (int i = 0; i < d2Pi.Length; i++)
{
z = i + 1; // item number
if (decimal.Round(Convert.ToDecimal(d2Pi[i]), decimalPoint) != decimal.Round(Convert.ToDecimal(objPI.d2Pi[i]), decimalPoint))
{
//Console.WriteLine("Test for Item No. # " + z + " is not Passed!");
resultFlag = false;
}
}
Assert.IsTrue(resultFlag);
Console.WriteLine("Values of d2Pi are Matched!");
#endregion
#region "d3Pi"
z = 0;
resultFlag = true;
Console.WriteLine("****** d3Pi ******");
for (int i = 0; i < d3Pi.Length; i++)
{
z = i + 1; // item number
if (decimal.Round(Convert.ToDecimal(d3Pi[i]), decimalPoint) != decimal.Round(Convert.ToDecimal(objPI.d3Pi[i]), decimalPoint))
{
//Console.WriteLine("Test for Item No. # " + z + " is not Passed!");
resultFlag = false;
}
}
Assert.IsTrue(resultFlag);
Console.WriteLine("Values of d3Pi are Matched!");
#endregion
}
#endregion
}