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lot of fixes, XYSampleData fit now seems to work (more checks are probably needed)

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This commit is contained in:
Antonin Portelli
2016-03-16 20:03:32 +00:00
parent 1f2150a42a
commit 3793aca27c
5 changed files with 123 additions and 70 deletions
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20
examples/exFit.cpp
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@ -9,7 +9,7 @@ using namespace std;
using namespace Latan;
const Index nPoint = 30;
const double xErr = .01, yErr = .1;
const double xErr = .2, yErr = .1;
const double exactPar[2] = {0.5,5.0}, dx = 10.0/static_cast<double>(nPoint);
int main(void)
@ -17,7 +17,7 @@ int main(void)
// generate fake data
XYStatData data;
RandGen rg;
double x_k, y_k;
double x1_k, x2_k;
DoubleModel f([](const double *x, const double *p)
{return p[1]*exp(-x[0]*p[0]);}, 1, 2);
@ -25,11 +25,11 @@ int main(void)
data.addYDim("y");
for (Index k = 0; k < nPoint; ++k)
{
x_k = k*dx + rg.gaussian(0.0, xErr);
y_k = f(&x_k, exactPar) + rg.gaussian(0.0, yErr);
printf("% 8e % 8e % 8e % 8e\n", x_k, xErr, y_k, yErr);
data.x(k) = x_k;
data.y(k) = y_k;
x1_k = rg.gaussian(k*dx, xErr);
x2_k = rg.gaussian(k*dx, xErr);
data.x(k) = x1_k;
data.y(k) = rg.gaussian(f(&x2_k, exactPar), yErr);
printf("% 8e % 8e % 8e % 8e\n", data.x(k), data.y(k), xErr, yErr);
}
cout << endl;
data.setXError(0, DVec::Constant(nPoint, xErr));
@ -42,9 +42,9 @@ int main(void)
MinuitMinimizer minimizer;
p = data.fit(minimizer, init, f);
cout << "a= " << p(0) << " b= " << p(1);
cout << " chi^2/ndof= " << p.getChi2PerDof();
cout << " p-value= " << p.getPValue() <<endl;
cout << "a= " << p(0) << " b= " << p(1) << endl;
cout << "chi^2/ndof= " << p.getChi2PerDof() << endl;
cout << "p-value= " << p.getPValue() <<endl;
return EXIT_SUCCESS;
}