public void Dispose()
{
if (_msDataFileScanHelper != null)
{
_msDataFileScanHelper.Dispose();
_msDataFileScanHelper = null;
}
}
/// <summary>
/// Looks through the result and finds ion mobility values.
/// Note that this method only returns new values that were found in results.
/// The returned dictionary should be merged with the existing values in
/// order to preserve those existing values.
/// </summary>
public Dictionary <LibKey, IonMobilityAndCCS> FindIonMobilityPeaks()
{
// Overwrite any existing measurements with newly derived ones
var measured = new Dictionary <LibKey, IonMobilityAndCCS>();
if (_document.Settings.MeasuredResults == null)
{
return(measured);
}
var filepaths = _document.Settings.MeasuredResults.MSDataFilePaths.ToArray();
_totalSteps = filepaths.Length * _document.MoleculeTransitionGroupCount;
if (_totalSteps == 0)
{
return(measured);
}
using (_msDataFileScanHelper = new MsDataFileScanHelper(SetScans, HandleLoadScanException))
{
//
// Avoid opening and re-opening raw files - make these the outer loop
//
_ms1IonMobilities = new Dictionary <LibKey, List <IonMobilityIntensityPair> >();
_ms2IonMobilities = new Dictionary <LibKey, List <IonMobilityIntensityPair> >();
var twopercent = (int)Math.Ceiling(_totalSteps * 0.02);
_totalSteps += twopercent;
_currentStep = twopercent;
if (_progressMonitor != null)
{
_progressStatus = new ProgressStatus(filepaths.First().GetFileName());
_progressStatus = _progressStatus.UpdatePercentCompleteProgress(_progressMonitor, _currentStep, _totalSteps); // Make that inital lag seem less dismal to the user
}
foreach (var fp in filepaths)
{
if (!ProcessFile(fp))
{
return(null); // User cancelled
}
}
// Find ion mobilities based on MS1 data
foreach (var dt in _ms1IonMobilities)
{
// Choose the ion mobility which gave the largest signal
// CONSIDER: average IM and CCS values that fall "near" the IM of largest signal?
var ms1IonMobility = dt.Value.OrderByDescending(p => p.Intensity).First().IonMobility;
// Check for MS2 data to use for high energy offset
List <IonMobilityIntensityPair> listDt;
var ms2IonMobility = _ms2IonMobilities.TryGetValue(dt.Key, out listDt)
? listDt.OrderByDescending(p => p.Intensity).First().IonMobility
: ms1IonMobility;
var value = IonMobilityAndCCS.GetIonMobilityAndCCS(ms1IonMobility.IonMobility, ms1IonMobility.CollisionalCrossSectionSqA, ms2IonMobility.IonMobility.Mobility.Value - ms1IonMobility.IonMobility.Mobility.Value);
if (!measured.ContainsKey(dt.Key))
{
measured.Add(dt.Key, value);
}
else
{
measured[dt.Key] = value;
}
}
// Check for data for which we have only MS2 to go on
foreach (var im in _ms2IonMobilities)
{
if (!_ms1IonMobilities.ContainsKey(im.Key))
{
// Only MS2 ion mobility values found, use that as a reasonable inference of MS1 ion mobility
var driftTimeIntensityPair = im.Value.OrderByDescending(p => p.Intensity).First();
var value = driftTimeIntensityPair.IonMobility;
// Note collisional cross section
if (_msDataFileScanHelper.ProvidesCollisionalCrossSectionConverter)
{
var mz = im.Key.PrecursorMz ?? GetMzFromDocument(im.Key);
var ccs = _msDataFileScanHelper.CCSFromIonMobility(value.IonMobility,
mz, im.Key.Charge);
if (ccs.HasValue)
{
value = IonMobilityAndCCS.GetIonMobilityAndCCS(value.IonMobility, ccs, value.HighEnergyIonMobilityValueOffset);
}
}
if (!measured.ContainsKey(im.Key))
{
measured.Add(im.Key, value);
}
else
{
measured[im.Key] = value;
}
}
}
}
return(measured);
}
private bool ProcessMSLevel(MsDataFileUri filePath, int msLevel, IEnumerable <ChromatogramInfo> transitionPointSets,
ChromatogramGroupInfo chromInfo, double?apexRT, TransitionGroupDocNode nodeGroup, LibKey libKey, float tolerance)
{
var transitions = new List <TransitionFullScanInfo>();
var chromSource = (msLevel == 1) ? ChromSource.ms1 : ChromSource.fragment;
IList <float> times = null;
foreach (var tranPointSet in transitionPointSets.Where(t => t.Source == chromSource))
{
transitions.Add(new TransitionFullScanInfo
{
//Name = tranPointSet.Header.,
Source = chromSource,
TimeIntensities = tranPointSet.TimeIntensities,
PrecursorMz = chromInfo.PrecursorMz,
ProductMz = tranPointSet.ProductMz,
ExtractionWidth = tranPointSet.ExtractionWidth,
//Id = nodeTran.Id
});
times = tranPointSet.Times;
}
if (!transitions.Any())
{
return(true); // Nothing to do at this ms level
}
IScanProvider scanProvider = new ScanProvider(_documentFilePath,
filePath,
chromSource, times, transitions.ToArray(),
_document.Settings.MeasuredResults,
() => _document.Settings.MeasuredResults.LoadMSDataFileScanIds(filePath));
// Across all spectra at the peak retention time, find the one with max total
// intensity for the mz's of interest (ie the isotopic distribution) and note its ion mobility.
var scanIndex = MsDataFileScanHelper.FindScanIndex(times, apexRT.Value);
_msDataFileScanHelper.UpdateScanProvider(scanProvider, 0, scanIndex);
_msDataFileScanHelper.MsDataSpectra = null; // Reset
scanIndex = _msDataFileScanHelper.GetScanIndex();
_msDataFileScanHelper.ScanProvider.SetScanForBackgroundLoad(scanIndex);
lock (this)
{
while (_msDataFileScanHelper.MsDataSpectra == null && _dataFileScanHelperException == null)
{
if (_progressMonitor != null && _progressMonitor.IsCanceled)
{
return(false);
}
Monitor.Wait(this, 500); // Let background loader do its thing
}
}
if (_dataFileScanHelperException != null)
{
throw new IOException(TextUtil.LineSeparate(Resources.DriftTimeFinder_HandleLoadScanException_Problem_using_results_to_populate_drift_time_library__, _dataFileScanHelperException.Message), _dataFileScanHelperException);
}
if (_progressMonitor != null && !ReferenceEquals(nodeGroup, _currentDisplayedTransitionGroupDocNode))
{
// Do this after scan load so first group after file switch doesn't seem laggy
_progressStatus = _progressStatus.ChangeMessage(TextUtil.LineSeparate(filePath.GetFileName(), nodeGroup.ToString())).
UpdatePercentCompleteProgress(_progressMonitor, _currentStep++, _totalSteps);
_currentDisplayedTransitionGroupDocNode = nodeGroup;
}
EvaluateBestIonMobilityValue(msLevel, libKey, tolerance, transitions);
return(true);
}
public Dictionary <LibKey, DriftTimeInfo> FindDriftTimePeaks()
{
// Overwrite any existing measurements with newly derived ones
var measured = new Dictionary <LibKey, DriftTimeInfo>();
if (_existing != null && _existing.MeasuredDriftTimePeptides != null)
{
foreach (var existingPair in _existing.MeasuredDriftTimePeptides)
{
measured.Add(existingPair.Key, existingPair.Value);
}
}
var filepaths = _document.Settings.MeasuredResults.MSDataFilePaths.ToArray();
_totalSteps = filepaths.Length * _document.MoleculeTransitionGroupCount;
if (_totalSteps == 0)
{
return(measured);
}
using (_msDataFileScanHelper = new MsDataFileScanHelper(SetScans, HandleLoadScanException))
{
//
// Avoid opening and re-opening raw files - make these the outer loop
//
_ms1DriftTimes = new Dictionary <LibKey, List <DriftTimeIntensityPair> >();
_ms2DriftTimes = new Dictionary <LibKey, List <DriftTimeIntensityPair> >();
var twopercent = (int)Math.Ceiling(_totalSteps * 0.02);
_totalSteps += twopercent;
_currentStep = twopercent;
if (_progressMonitor != null)
{
_progressStatus = new ProgressStatus(filepaths.First().GetFileName());
_progressStatus = _progressStatus.UpdatePercentCompleteProgress(_progressMonitor, _currentStep, _totalSteps); // Make that inital lag seem less dismal to the user
}
foreach (var fp in filepaths)
{
if (!ProcessFile(fp))
{
return(null); // User cancelled
}
}
// Find drift times based on MS1 data
foreach (var dt in _ms1DriftTimes)
{
// Choose the drift time which gave the largest signal
var ms1DriftTime = dt.Value.OrderByDescending(p => p.Intensity).First().DriftTime;
// Check for MS2 data to use for high energy offset
List <DriftTimeIntensityPair> listDt;
var ms2DriftTime = _ms2DriftTimes.TryGetValue(dt.Key, out listDt)
? listDt.OrderByDescending(p => p.Intensity).First().DriftTime
: (ms1DriftTime ?? 0);
var value = new DriftTimeInfo(ms1DriftTime, ms2DriftTime - ms1DriftTime ?? 0);
if (!measured.ContainsKey(dt.Key))
{
measured.Add(dt.Key, value);
}
else
{
measured[dt.Key] = value;
}
}
// Check for data for which we have only MS2 to go on
foreach (var dt in _ms2DriftTimes)
{
if (!_ms1DriftTimes.ContainsKey(dt.Key))
{
// Only MS2 drift times found, use that
var value = new DriftTimeInfo(dt.Value.OrderByDescending(p => p.Intensity).First().DriftTime, 0);
if (!measured.ContainsKey(dt.Key))
{
measured.Add(dt.Key, value);
}
else
{
measured[dt.Key] = value;
}
}
}
}
return(measured);
}
