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#! /usr/bin/env python
from __future__ import print_function
from openturns import *
{
// First, build two functions from R^3->R
Description inVar(3);
inVar[0] = "x1";
inVar[1] = "x2";
inVar[2] = "x3";
Description outVar(1);
outVar[0] = "y";
Description formula(1);
formula[0] = "x1^3 * sin(x2 + 2.5 * x3) - (x1 + x2)^2 / (1.0 + x3^2)";
LinearCombinationEvaluationImplementation::NumericalMathFunctionCollection functions(2);
functions[0] = NumericalMathFunction(inVar, outVar, formula);
formula[0] = "exp(-x1 * x2 + x3) / cos(1.0 + x2 * x3 - x1)";
functions[1] = NumericalMathFunction(inVar, outVar, formula);
// Second, build the weights
NumericalPoint coefficients(2);
coefficients[0] = 0.3;
coefficients[1] = 2.9;
LinearCombinationEvaluationImplementation myEvaluation(functions, coefficients);
NumericalPoint inPoint(3);
inPoint[0] = 1.2;
inPoint[1] = 2.3;
inPoint[2] = 3.4;
fullprint << "myEvaluation=" << myEvaluation << std::endl;
fullprint << "Value at " << inPoint << "=" << myEvaluation(inPoint) << std::endl;
}
catch (TestFailed & ex)
{
std::cerr << ex << std::endl;
return ExitCode::Error;
}
return ExitCode::Success;
}
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