PPM Spectrum::getPeakWidth( Dimension d ) const
{
SpectrumType* t = getType();
if( t == 0 )
return 0;
return t->getPeakWidth( mapToType( d ) );
}
SpinLabel Spectrum::getKeyLabel(Dimension d) const
{
SpectrumType* t = getType();
if( t == 0 )
return SpinLabel();
return t->getKeyLabel( mapToType( d ) );
}
int Spectrum::getNoesyDir(Dimension a, Dimension b) const
{
SpectrumType* t = getType();
if( t == 0 )
return SpectrumType::NoNoesy;
else
return t->getNoesyDir( mapToType( a ), mapToType( b ) );
}
bool Spectrum::hasNoesy() const
{
SpectrumType* t = getType();
if( t == 0 )
return false;
else
return t->hasNoesy();
}
bool Spectrum::isNoesy(Dimension a ) const
{
SpectrumType* t = getType();
if( t == 0 )
return false;
else
return t->isNoesy( mapToType( a ) );
}
const char* Spectrum::getDimName(Dimension d) const
{
SpectrumType* t = getType();
if( t )
return t->getName( mapToType( d ) ).data();
else
return getScale( d ).getColor().getIsoLabel();
}
AtomType Spectrum::getColor(Dimension d) const
{
SpectrumType* t = getType();
if( t )
return t->getColor( mapToType( d ) );
else
return getScale( d ).getColor();
}
void consumeSpectrum(SpectrumType & s) override
{
for (Size i = 0; i < s.size(); i++)
{
TIC += s[i].getIntensity();
}
nr_peaks += s.size();
nr_spectra++;
}
void MSDataSqlConsumer::consumeSpectrum(SpectrumType & s)
{
spectra_.push_back(s);
s.clear(false);
if (full_meta_) peak_meta_.addSpectrum(s);
if (spectra_.size() >= flush_after_) {flush();}
}
double MelFilter::Apply(const SpectrumType& dataSpectrum)
{
double value = 0.0;
int N = dataSpectrum.size();
for (int i = 0; i < N; ++i)
value += std::abs(dataSpectrum[i]) * m_spectrum[i];
return value;
}
/**
* Returns a single value computed by multiplying signal spectrum with
* Mel filter spectrum and summing all the products.
*
* @param dataSpectrum complex signal spectrum
* @return dot product of the spectra
*/
double MelFilter::apply(const SpectrumType& dataSpectrum) const
{
double value = 0.0;
const std::size_t N = dataSpectrum.size();
// iteration over first half of the spectrum
for (std::size_t i = 0; i < N / 2 - 1; ++i)
{
value += std::abs(dataSpectrum[i]) * m_spectrum[i];
}
return value;
}
const SpinLabelSet& Spectrum::getSpinLabels(Dimension d) const
{
SpectrumType* t = getType();
assert( t );
return t->getLabels( d );
}
static void deisotopeAndSingleChargeMSSpectrum_(SpectrumType& in, Int min_charge, Int max_charge, double fragment_tolerance, bool fragment_unit_ppm, bool keep_only_deisotoped = false, Size min_isopeaks = 3, Size max_isopeaks = 10, bool make_single_charged = true)
{
if (in.empty())
{
return;
}
SpectrumType old_spectrum = in;
// determine charge seeds and extend them
vector<Size> mono_isotopic_peak(old_spectrum.size(), 0);
vector<Int> features(old_spectrum.size(), -1);
Int feature_number = 0;
for (Size current_peak = 0; current_peak != old_spectrum.size(); ++current_peak)
{
double current_mz = old_spectrum[current_peak].getPosition()[0];
for (Int q = max_charge; q >= min_charge; --q) // important: test charge hypothesis from high to low
{
// try to extend isotopes from mono-isotopic peak
// if extension larger then min_isopeaks possible:
// - save charge q in mono_isotopic_peak[]
// - annotate all isotopic peaks with feature number
if (features[current_peak] == -1) // only process peaks which have no assigned feature number
{
bool has_min_isopeaks = true;
vector<Size> extensions;
for (Size i = 0; i < max_isopeaks; ++i)
{
double expected_mz = current_mz + i * Constants::C13C12_MASSDIFF_U / q;
Size p = old_spectrum.findNearest(expected_mz);
double tolerance_dalton = fragment_unit_ppm ? fragment_tolerance * old_spectrum[p].getPosition()[0] * 1e-6 : fragment_tolerance;
if (fabs(old_spectrum[p].getPosition()[0] - expected_mz) > tolerance_dalton) // test for missing peak
{
if (i < min_isopeaks)
{
has_min_isopeaks = false;
}
break;
}
else
{
// TODO: include proper averagine model filtering. for now start at the second peak to test hypothesis
Size n_extensions = extensions.size();
if (n_extensions != 0)
{
if (old_spectrum[p].getIntensity() > old_spectrum[extensions[n_extensions - 1]].getIntensity())
{
if (i < min_isopeaks)
{
has_min_isopeaks = false;
}
break;
}
}
// averagine check passed
extensions.push_back(p);
}
}
if (has_min_isopeaks)
{
//cout << "min peaks at " << current_mz << " " << " extensions: " << extensions.size() << endl;
mono_isotopic_peak[current_peak] = q;
for (Size i = 0; i != extensions.size(); ++i)
{
features[extensions[i]] = feature_number;
}
feature_number++;
}
}
}
}
in.clear(false);
for (Size i = 0; i != old_spectrum.size(); ++i)
{
Int z = mono_isotopic_peak[i];
if (keep_only_deisotoped)
{
if (z == 0)
{
continue;
}
// if already single charged or no decharging selected keep peak as it is
if (!make_single_charged)
{
in.push_back(old_spectrum[i]);
}
else
{
RichPeak1D p = old_spectrum[i];
p.setMZ(p.getMZ() * z - (z - 1) * Constants::PROTON_MASS_U);
in.push_back(p);
}
}
else
{
// keep all unassigned peaks
if (features[i] < 0)
{
in.push_back(old_spectrum[i]);
continue;
}
// convert mono-isotopic peak with charge assigned by deisotoping
if (z != 0)
{
if (!make_single_charged)
{
in.push_back(old_spectrum[i]);
}
else
{
RichPeak1D p = old_spectrum[i];
p.setMZ(p.getMZ() * z - (z - 1) * Constants::PROTON_MASS_U);
in.push_back(p);
}
}
}
}
in.sortByPosition();
}