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simple fit weight scaling

This commit is contained in:
Jiri Pittner 2021-11-22 23:06:22 +01:00
parent 999093c7dd
commit ee21da1311
1 changed files with 6 additions and 1 deletions
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7
simple.h
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@ -117,7 +117,7 @@ int npoints;
rhsmat[0][i] += funcs[i]*y;
}
}
T solve(bool preserve=false)
T solve(const T preserve=0)
{
//for(int i=0; i<n; ++i) {for(int j=0; j<n; ++j) std::cout <<fitmat[i][j]<<" "; std::cout<<std::endl;}
//for(int j=0; j<n; ++j) std::cout <<rhsmat[0][j]<<" "; std::cout<<std::endl;
@ -128,6 +128,11 @@ int npoints;
T rhswork[1][n];memcpy(rhswork,rhsmat,1*n*sizeof(T));
T det = simple_gaussj(fitwork,rhswork);
memcpy(&fitcoef[0],&rhswork[0][0],n*sizeof(T));
if(preserve!=(T)1) //scale weight of old data points
{
for(int i=0; i<n; ++i) for(int j=0; j<n; ++j) fitmat[i][j] *= preserve;
for(int i=0; i<n; ++i) rhsmat[0][i] *= preserve;
}
return det;
}
T det = simple_gaussj(fitmat,rhsmat);