public ChromotographBuilder(IEnumerable <IIdentifiedSpectrum> targetPeaks, IEnumerable <string> rawFiles, double ppmTolerance, bool force)
 {
     this.ppmTolerance = ppmTolerance;
     this.force        = force;
     this.spectra      = targetPeaks.GroupBy(m => m.Query.FileScan.Experimental.ToLower()).ToList();
     this.rawFiles     = RawFileFactory.GetExperimentalMap(rawFiles).ToDictionary(m => m.Key.ToLower(), m => m.Value);
 }