public void testIntegrateCatR()
{
REngine.SetEnvironmentVariables();
REngine engineObj = REngine.GetInstance();
// Loading a library from R
engineObj.Evaluate("library(catR)");
//Sequence generation
NumericVector x = engineObj.Evaluate("x <- seq(from = -4, to = 4, length = 33)").AsNumeric();
engineObj.SetSymbol("x", x);
double[] x_val = x.Select(p => (double)p).ToArray();
NumericVector y = engineObj.Evaluate("y <- exp(x)").AsNumeric();
engineObj.SetSymbol("y", y);
double[] y_val = y.Select(p => (double)p).ToArray();
// Call function from R
NumericVector result_Integrate = engineObj.Evaluate("result_Integrate <- integrate.catR(x, y)").AsNumeric();
engineObj.SetSymbol("result_Integrate", result_Integrate);
// Call function from inside
double result = CatRLib.Integrate_catR(x_val, y_val);
decimal temp1 = decimal.Round(Convert.ToDecimal(result_Integrate[0]), 4);
decimal temp2 = decimal.Round(Convert.ToDecimal(result), 4);
decimal errFraction = 0;
if (temp1 > temp2)
{
errFraction = temp1 - temp2;
}
else if (temp2 > temp1)
{
errFraction = temp2 - temp1;
}
else
{
Assert.AreEqual(temp1, temp2);
}
}