RefSpectrum::RefSpectrum(const Spectrum& s)
{
    length = 0;
    annot = -1;
    copies = 1;
    id = -1;
    //or could do data = s.data and then change type and peaks
    data.type = REFERENCE;
    data.scanNumber = s.getScanNum();
    data.mz = s.getMz();
    data.numPeaks = s.getNumPeaks();
    if(data.numPeaks)
        {
            data.peaks = new PEAK_T[data.numPeaks];  //add if(data.numPeaks?)
            s.getPeaks(data.peaks, data.numPeaks);
        }
}