RVector TravelTimeDijkstraModelling::createGradientModel(double lBound,
double uBound){
if (verbose_) std::cout << "Creating Gradient model ..." << std::endl;
RVector appSlowness(getApparentSlowness());
double smi = median(appSlowness);
if (smi < lBound) smi = lBound * 1.1;
double sma = max(appSlowness) / 2.0;
if (uBound > 0.0 && sma > uBound) sma = uBound * 0.9;
Index nModel = regionManager().parameterCount();
RVector zmid(nModel);
Mesh paraDomain(regionManager().paraDomain());
int dim = paraDomain.dim() - 1;
for (Index i = 0; i < paraDomain.cellCount() ; i++) {
zmid[i] = paraDomain.cell(i).center()[dim];
}
double zmi = min(zmid);
double zma = max(zmid);
RVector gradModel(nModel);
for (Index i = 0; i < gradModel.size(); i++) {
gradModel[i] = smi * std::exp((zmid[i] - zmi) / (zma - zmi) * std::log(sma / smi));
}
return gradModel;
}
HarmonicModelling::HarmonicModelling( size_t nh, const RVector & tvec, bool verbose )
: ModellingBase( verbose ),
t_( tvec ), tMin_( min( tvec ) ), tMax_( max( tvec ) ), nh_( nh ), np_( 2 * nh + 2 ) {
regionManager().setParameterCount( np_ );
A_.clear();
nt_ = tvec.size();
//! constant vector of 1 -- offset
RVector one( nt_, 1.0 );
A_.push_back( one ); //! const
//! vector linearly ascending from 0 (tmin) to 1 (tmax) -- drift
double tMin = min( tvec ), tMax = max( tvec );
RVector tOne( ( t_ - tMin ) / ( tMax - tMin ) ); //** wieso nicht so:
// RVector tOne( ( t_ - tMin_ ) / ( tMax_ - tMin_ ) );
A_.push_back( tOne );
//! harmonic functions cos/sin( n pi t )
for ( size_t j = 1 ; j <= nh_ ; j++ ){
one = cos( tOne * PI2 * j );
A_.push_back( one );
one = sin( tOne * PI2 * j );
A_.push_back( one );
}
}