/**
 * Execute the algorithm.
 */
void FitResolutionConvolvedModel::exec() {
  API::IAlgorithm_sptr fit = createFittingAlgorithm();
  fit->setPropertyValue("Function", createFunctionString());
  fit->setProperty("InputWorkspace", getPropertyValue(INPUT_WS_NAME));
  fit->setProperty("DomainType",
                   "Simple"); // Parallel not quite giving correct answers
  fit->setProperty("Minimizer", "Levenberg-MarquardtMD");

  const int maxIter = niterations();
  fit->setProperty("MaxIterations", maxIter);
  fit->setProperty("CreateOutput", true);
  fit->setPropertyValue("Output", getPropertyValue(SIMULATED_NAME));

  try {
    fit->execute();
  } catch (std::exception &exc) {
    throw std::runtime_error(
        std::string("FitResolutionConvolvedModel - Error running Fit: ") +
        exc.what());
  }

  // Pass on the relevant properties
  IMDEventWorkspace_sptr simulatedData = fit->getProperty("OutputWorkspace");
  this->setProperty(SIMULATED_NAME, simulatedData);

  if (this->existsProperty(OUTPUT_PARS)) {
    ITableWorkspace_sptr outputPars = fit->getProperty("OutputParameters");
    setProperty(OUTPUT_PARS, outputPars);
  }
  if (this->existsProperty(OUTPUTCOV_MATRIX)) {
    ITableWorkspace_sptr covarianceMatrix =
        fit->getProperty("OutputNormalisedCovarianceMatrix");
    setProperty(OUTPUTCOV_MATRIX, covarianceMatrix);
  }
}
Ejemplo n.º 2
0
/** Perform SortHKL on the output workspaces
 *
 * @param ws :: any PeaksWorkspace
 * @param runName :: string to put in statistics table
 */
void StatisticsOfPeaksWorkspace::doSortHKL(Mantid::API::Workspace_sptr ws,
                                           std::string runName) {
  std::string pointGroup = getPropertyValue("PointGroup");
  std::string latticeCentering = getPropertyValue("LatticeCentering");
  std::string wkspName = getPropertyValue("OutputWorkspace");
  std::string tableName = getPropertyValue("StatisticsTable");
  API::IAlgorithm_sptr statsAlg = createChildAlgorithm("SortHKL");
  statsAlg->setProperty("InputWorkspace", ws);
  statsAlg->setPropertyValue("OutputWorkspace", wkspName);
  statsAlg->setPropertyValue("StatisticsTable", tableName);
  statsAlg->setProperty("PointGroup", pointGroup);
  statsAlg->setProperty("LatticeCentering", latticeCentering);
  statsAlg->setProperty("RowName", runName);
  if (runName.compare("Overall") != 0)
    statsAlg->setProperty("Append", true);
  statsAlg->executeAsChildAlg();
  PeaksWorkspace_sptr statsWksp = statsAlg->getProperty("OutputWorkspace");
  ITableWorkspace_sptr tablews = statsAlg->getProperty("StatisticsTable");
  if (runName.compare("Overall") == 0)
    setProperty("OutputWorkspace", statsWksp);
  setProperty("StatisticsTable", tablews);
}
Ejemplo n.º 3
0
/// Run ConvertUnits as a sub-algorithm to convert to dSpacing
MatrixWorkspace_sptr DiffractionFocussing::convertUnitsToDSpacing(const API::MatrixWorkspace_sptr& workspace)
{
  const std::string CONVERSION_UNIT = "dSpacing";

  Unit_const_sptr xUnit = workspace->getAxis(0)->unit();

  g_log.information() << "Converting units from "<< xUnit->label() << " to " << CONVERSION_UNIT<<".\n";

  API::IAlgorithm_sptr childAlg = createSubAlgorithm("ConvertUnits", 0.34, 0.66);
  childAlg->setProperty("InputWorkspace", workspace);
  childAlg->setPropertyValue("Target",CONVERSION_UNIT);
  childAlg->executeAsSubAlg();

  return childAlg->getProperty("OutputWorkspace");
}
void LoadNexusMonitors2::runLoadLogs(const std::string filename,
                                     API::MatrixWorkspace_sptr localWorkspace) {
  // do the actual work
  API::IAlgorithm_sptr loadLogs = createChildAlgorithm("LoadNexusLogs");

  // Now execute the Child Algorithm. Catch and log any error, but don't stop.
  try {
    g_log.information() << "Loading logs from NeXus file..." << std::endl;
    loadLogs->setPropertyValue("Filename", filename);
    loadLogs->setProperty<API::MatrixWorkspace_sptr>("Workspace",
                                                     localWorkspace);
    loadLogs->execute();
  } catch (...) {
    g_log.error() << "Error while loading Logs from Nexus. Some sample logs "
                     "may be missing." << std::endl;
  }
}
Ejemplo n.º 5
0
/** Run the Child Algorithm LoadInstrument (as for LoadRaw)
 * @param inst_name :: The name written in the Nexus file
 * @param localWorkspace :: The workspace to insert the instrument into
 */
void LoadSpice2D::runLoadInstrument(
    const std::string &inst_name,
    DataObjects::Workspace2D_sptr localWorkspace) {

  API::IAlgorithm_sptr loadInst = createChildAlgorithm("LoadInstrument");

  // Now execute the Child Algorithm. Catch and log any error, but don't stop.
  try {
    loadInst->setPropertyValue("InstrumentName", inst_name);
    loadInst->setProperty<API::MatrixWorkspace_sptr>("Workspace",
                                                     localWorkspace);
    loadInst->setProperty("RewriteSpectraMap",
                          Mantid::Kernel::OptionalBool(true));
    loadInst->execute();
  } catch (std::invalid_argument &) {
    g_log.information("Invalid argument to LoadInstrument Child Algorithm");
  } catch (std::runtime_error &) {
    g_log.information(
        "Unable to successfully run LoadInstrument Child Algorithm");
  }
}
Ejemplo n.º 6
0
/**
 * Execute the algorithm.
 */
void LoadBBY::exec() {
  // Delete the output workspace name if it existed
  std::string outName = getPropertyValue("OutputWorkspace");
  if (API::AnalysisDataService::Instance().doesExist(outName))
    API::AnalysisDataService::Instance().remove(outName);

  // Get the name of the data file.
  std::string filename = getPropertyValue(FilenameStr);
  ANSTO::Tar::File tarFile(filename);
  if (!tarFile.good())
    throw std::invalid_argument("invalid BBY file");

  // region of intreset
  std::vector<bool> roi = createRoiVector(getPropertyValue(MaskStr));

  double tofMinBoundary = getProperty(FilterByTofMinStr);
  double tofMaxBoundary = getProperty(FilterByTofMaxStr);

  double timeMinBoundary = getProperty(FilterByTimeStartStr);
  double timeMaxBoundary = getProperty(FilterByTimeStopStr);

  if (isEmpty(tofMaxBoundary))
    tofMaxBoundary = std::numeric_limits<double>::infinity();
  if (isEmpty(timeMaxBoundary))
    timeMaxBoundary = std::numeric_limits<double>::infinity();

  API::Progress prog(this, 0.0, 1.0, Progress_Total);
  prog.doReport("creating instrument");

  // create workspace
  DataObjects::EventWorkspace_sptr eventWS =
      boost::make_shared<DataObjects::EventWorkspace>();

  eventWS->initialize(HISTO_BINS_Y * HISTO_BINS_X,
                      2, // number of TOF bin boundaries
                      1);

  // set the units
  eventWS->getAxis(0)->unit() = Kernel::UnitFactory::Instance().create("TOF");
  eventWS->setYUnit("Counts");

  // set title
  const std::vector<std::string> &subFiles = tarFile.files();
  for (const auto &subFile : subFiles)
    if (subFile.compare(0, 3, "BBY") == 0) {
      std::string title = subFile;

      if (title.rfind(".hdf") == title.length() - 4)
        title.resize(title.length() - 4);

      if (title.rfind(".nx") == title.length() - 3)
        title.resize(title.length() - 3);

      eventWS->setTitle(title);
      break;
    }

  // create instrument
  InstrumentInfo instrumentInfo;

  // Geometry::Instrument_sptr instrument =
  createInstrument(tarFile, /* ref */ instrumentInfo);
  // eventWS->setInstrument(instrument);

  // load events
  size_t numberHistograms = eventWS->getNumberHistograms();

  std::vector<EventVector_pt> eventVectors(numberHistograms, nullptr);
  std::vector<size_t> eventCounts(numberHistograms, 0);

  // phase correction
  Kernel::Property *periodMasterProperty =
      getPointerToProperty(PeriodMasterStr);
  Kernel::Property *periodSlaveProperty = getPointerToProperty(PeriodSlaveStr);
  Kernel::Property *phaseSlaveProperty = getPointerToProperty(PhaseSlaveStr);

  double periodMaster;
  double periodSlave;
  double phaseSlave;

  if (periodMasterProperty->isDefault() || periodSlaveProperty->isDefault() ||
      phaseSlaveProperty->isDefault()) {

    if (!periodMasterProperty->isDefault() ||
        !periodSlaveProperty->isDefault() || !phaseSlaveProperty->isDefault()) {
      throw std::invalid_argument("Please specify PeriodMaster, PeriodSlave "
                                  "and PhaseSlave or none of them.");
    }

    // if values have not been specified in loader then use values from hdf file
    periodMaster = instrumentInfo.period_master;
    periodSlave = instrumentInfo.period_slave;
    phaseSlave = instrumentInfo.phase_slave;
  } else {
    periodMaster = getProperty(PeriodMasterStr);
    periodSlave = getProperty(PeriodSlaveStr);
    phaseSlave = getProperty(PhaseSlaveStr);

    if ((periodMaster < 0.0) || (periodSlave < 0.0))
      throw std::invalid_argument(
          "Please specify a positive value for PeriodMaster and PeriodSlave.");
  }

  double period = periodSlave;
  double shift = -1.0 / 6.0 * periodMaster - periodSlave * phaseSlave / 360.0;

  // count total events per pixel to reserve necessary memory
  ANSTO::EventCounter eventCounter(
      roi, HISTO_BINS_Y, period, shift, tofMinBoundary, tofMaxBoundary,
      timeMinBoundary, timeMaxBoundary, eventCounts);

  loadEvents(prog, "loading neutron counts", tarFile, eventCounter);

  // prepare event storage
  ANSTO::ProgressTracker progTracker(prog, "creating neutron event lists",
                                     numberHistograms, Progress_ReserveMemory);

  for (size_t i = 0; i != numberHistograms; ++i) {
    DataObjects::EventList &eventList = eventWS->getEventList(i);

    eventList.setSortOrder(DataObjects::PULSETIME_SORT);
    eventList.reserve(eventCounts[i]);

    eventList.setDetectorID(static_cast<detid_t>(i));
    eventList.setSpectrumNo(static_cast<detid_t>(i));

    DataObjects::getEventsFrom(eventList, eventVectors[i]);

    progTracker.update(i);
  }
  progTracker.complete();

  ANSTO::EventAssigner eventAssigner(
      roi, HISTO_BINS_Y, period, shift, tofMinBoundary, tofMaxBoundary,
      timeMinBoundary, timeMaxBoundary, eventVectors);

  loadEvents(prog, "loading neutron events", tarFile, eventAssigner);

  Kernel::cow_ptr<MantidVec> axis;
  MantidVec &xRef = axis.access();
  xRef.resize(2, 0.0);
  xRef[0] = std::max(
      0.0,
      floor(eventCounter.tofMin())); // just to make sure the bins hold it all
  xRef[1] = eventCounter.tofMax() + 1;
  eventWS->setAllX(axis);

  // count total number of masked bins
  size_t maskedBins = 0;
  for (size_t i = 0; i != roi.size(); i++)
    if (!roi[i])
      maskedBins++;

  if (maskedBins > 0) {
    // create list of masked bins
    std::vector<size_t> maskIndexList(maskedBins);
    size_t maskIndex = 0;

    for (size_t i = 0; i != roi.size(); i++)
      if (!roi[i])
        maskIndexList[maskIndex++] = i;

    API::IAlgorithm_sptr maskingAlg = createChildAlgorithm("MaskDetectors");
    maskingAlg->setProperty("Workspace", eventWS);
    maskingAlg->setProperty("WorkspaceIndexList", maskIndexList);
    maskingAlg->executeAsChildAlg();
  }

  // set log values
  API::LogManager &logManager = eventWS->mutableRun();

  logManager.addProperty("filename", filename);
  logManager.addProperty("att_pos", static_cast<int>(instrumentInfo.att_pos));
  logManager.addProperty("frame_count",
                         static_cast<int>(eventCounter.numFrames()));
  logManager.addProperty("period", period);

  // currently beam monitor counts are not available, instead number of frames
  // times period is used
  logManager.addProperty(
      "bm_counts", static_cast<double>(eventCounter.numFrames()) * period /
                       1.0e6); // static_cast<double>(instrumentInfo.bm_counts)

  // currently
  Kernel::time_duration duration =
      boost::posix_time::microseconds(static_cast<boost::int64_t>(
          static_cast<double>(eventCounter.numFrames()) * period));

  Kernel::DateAndTime start_time("2000-01-01T00:00:00");
  Kernel::DateAndTime end_time(start_time + duration);

  logManager.addProperty("start_time", start_time.toISO8601String());
  logManager.addProperty("end_time", end_time.toISO8601String());

  std::string time_str = start_time.toISO8601String();
  AddSinglePointTimeSeriesProperty(logManager, time_str, "L1_chopper_value",
                                   instrumentInfo.L1_chopper_value);
  AddSinglePointTimeSeriesProperty(logManager, time_str, "L2_det_value",
                                   instrumentInfo.L2_det_value);
  AddSinglePointTimeSeriesProperty(logManager, time_str, "L2_curtainl_value",
                                   instrumentInfo.L2_curtainl_value);
  AddSinglePointTimeSeriesProperty(logManager, time_str, "L2_curtainr_value",
                                   instrumentInfo.L2_curtainr_value);
  AddSinglePointTimeSeriesProperty(logManager, time_str, "L2_curtainu_value",
                                   instrumentInfo.L2_curtainu_value);
  AddSinglePointTimeSeriesProperty(logManager, time_str, "L2_curtaind_value",
                                   instrumentInfo.L2_curtaind_value);
  AddSinglePointTimeSeriesProperty(logManager, time_str, "D_det_value",
                                   instrumentInfo.D_det_value);
  AddSinglePointTimeSeriesProperty(logManager, time_str, "D_curtainl_value",
                                   instrumentInfo.D_curtainl_value);
  AddSinglePointTimeSeriesProperty(logManager, time_str, "D_curtainr_value",
                                   instrumentInfo.D_curtainr_value);
  AddSinglePointTimeSeriesProperty(logManager, time_str, "D_curtainu_value",
                                   instrumentInfo.D_curtainu_value);
  AddSinglePointTimeSeriesProperty(logManager, time_str, "D_curtaind_value",
                                   instrumentInfo.D_curtaind_value);
  AddSinglePointTimeSeriesProperty(logManager, time_str, "curtain_rotation",
                                   10.0);

  API::IAlgorithm_sptr loadInstrumentAlg =
      createChildAlgorithm("LoadInstrument");
  loadInstrumentAlg->setProperty("Workspace", eventWS);
  loadInstrumentAlg->setPropertyValue("InstrumentName", "BILBY");
  loadInstrumentAlg->setProperty("RewriteSpectraMap",
                                 Mantid::Kernel::OptionalBool(false));
  loadInstrumentAlg->executeAsChildAlg();

  setProperty("OutputWorkspace", eventWS);
}
Ejemplo n.º 7
0
    /** 
    *   Executes the algorithm
    */
    void PlotPeakByLogValue::exec()
    {

      // Create a list of the input workspace
      const std::vector<InputData> wsNames = makeNames();

      std::string fun = getPropertyValue("Function");
      //int wi = getProperty("WorkspaceIndex");
      std::string logName = getProperty("LogValue");
      bool sequential = getPropertyValue("FitType") == "Sequential";

      bool isDataName = false; // if true first output column is of type string and is the data source name
      ITableWorkspace_sptr result = WorkspaceFactory::Instance().createTable("TableWorkspace");
      if (logName == "SourceName")
      {
        result->addColumn("str","Source name");
        isDataName = true;
      }
      else if (logName.empty())
      {
        result->addColumn("double","axis-1");
      }
      else
      {
        result->addColumn("double",logName);
      }
      // Create an instance of the fitting function to obtain the names of fitting parameters
      IFitFunction* ifun = FunctionFactory::Instance().createInitialized(fun);
      if (!ifun)
      {
        throw std::invalid_argument("Fitting function failed to initialize");
      }
      for(size_t iPar=0;iPar<ifun->nParams();++iPar)
      {
        result->addColumn("double",ifun->parameterName(iPar));
        result->addColumn("double",ifun->parameterName(iPar)+"_Err");
      }
      result->addColumn("double","Chi_squared");
      delete ifun;
      setProperty("OutputWorkspace",result);

      double dProg = 1./static_cast<double>(wsNames.size());
      double Prog = 0.;
      for(int i=0;i<static_cast<int>(wsNames.size());++i)
      {
        InputData data = getWorkspace(wsNames[i]);

        if (!data.ws)
        {
          g_log.warning() << "Cannot access workspace " << wsNames[i].name << '\n';
          continue;
        }

        if (data.i < 0 && data.indx.empty())
        {
          g_log.warning() << "Zero spectra selected for fitting in workspace " << wsNames[i].name << '\n';
          continue;
        }

        int j,jend;
        if (data.i >= 0)
        {
          j = data.i;
          jend = j + 1;
        }
        else
        {// no need to check data.indx.empty()
          j = data.indx.front();
          jend = data.indx.back() + 1;
        }

        dProg /= abs(jend - j);
        for(;j < jend;++j)
        {

          // Find the log value: it is either a log-file value or simply the workspace number
          double logValue;
          if (logName.empty())
          {
            API::Axis* axis = data.ws->getAxis(1);
            logValue = (*axis)(j);
          }
          else if (logName != "SourceName")
          {
            Kernel::Property* prop = data.ws->run().getLogData(logName);
            if (!prop)
            {
              throw std::invalid_argument("Log value "+logName+" does not exist");
            }
            TimeSeriesProperty<double>* logp = 
              dynamic_cast<TimeSeriesProperty<double>*>(prop); 
            logValue = logp->lastValue();
          }

          std::string resFun = fun;
          std::vector<double> errors;
          double chi2;

          try
          {
            // Fit the function
            API::IAlgorithm_sptr fit = createSubAlgorithm("Fit");
            fit->initialize();
            fit->setProperty("InputWorkspace",data.ws);
            //fit->setPropertyValue("InputWorkspace",data.ws->getName());
            fit->setProperty("WorkspaceIndex",j);
            fit->setPropertyValue("Function",fun);
            fit->setPropertyValue("StartX",getPropertyValue("StartX"));
            fit->setPropertyValue("EndX",getPropertyValue("EndX"));
            fit->setPropertyValue("Minimizer",getPropertyValue("Minimizer"));
            fit->setPropertyValue("CostFunction",getPropertyValue("CostFunction"));
            fit->execute();
            resFun = fit->getPropertyValue("Function");
            errors = fit->getProperty("Errors");
            chi2 = fit->getProperty("OutputChi2overDoF");
          }
          catch(...)
          {
            g_log.error("Error in Fit subalgorithm");
            throw;
          }

          if (sequential)
          {
            fun = resFun;
          }

          // Extract the fitted parameters and put them into the result table
          TableRow row = result->appendRow();
          if (isDataName)
          {
            row << wsNames[i].name;
          }
          else
          {
            row << logValue;
          }
          ifun = FunctionFactory::Instance().createInitialized(resFun);
          for(size_t iPar=0;iPar<ifun->nParams();++iPar)
          {
            row << ifun->getParameter(iPar) << errors[iPar];
          }
          row << chi2;
          delete ifun;
          Prog += dProg;
          progress(Prog);
          interruption_point();
        } // for(;j < jend;++j)
      }
    }
Ejemplo n.º 8
0
    /** Get a workspace identified by an InputData structure. 
      * @param data :: InputData with name and either spec or i fields defined. 
      * @return InputData structure with the ws field set if everything was OK.
      */
    PlotPeakByLogValue::InputData PlotPeakByLogValue::getWorkspace(const InputData& data)
    {
      InputData out(data);
      if (API::AnalysisDataService::Instance().doesExist(data.name))
      {
        DataObjects::Workspace2D_sptr ws = boost::dynamic_pointer_cast<DataObjects::Workspace2D>(
          API::AnalysisDataService::Instance().retrieve(data.name));
        if (ws)
        {
          out.ws = ws;
        }
        else
        {
          return data;
        }
      }
      else
      {
        std::ifstream fil(data.name.c_str());
        if (!fil)
        {
          g_log.warning() << "File "<<data.name<<" does not exist\n";
          return data;
        }
        fil.close();
        std::string::size_type i = data.name.find_last_of('.');
        if (i == std::string::npos)
        {
          g_log.warning() << "Cannot open file "<<data.name<<"\n";
          return data;
        }
        std::string ext = data.name.substr(i);
        try
        {
          API::IAlgorithm_sptr load = createSubAlgorithm("Load");
          load->initialize();
          load->setPropertyValue("FileName",data.name);
          load->execute();
          if (load->isExecuted())
          {
            API::Workspace_sptr rws = load->getProperty("OutputWorkspace");
            if (rws)
            {
              DataObjects::Workspace2D_sptr ws = boost::dynamic_pointer_cast<DataObjects::Workspace2D>(rws);
              if (ws) 
              {
                out.ws = ws;
              }
              else
              {
                API::WorkspaceGroup_sptr gws = boost::dynamic_pointer_cast<API::WorkspaceGroup>(rws);
                if (gws)
                {
                  std::vector<std::string> wsNames = gws->getNames();
                  std::string propName = "OUTPUTWORKSPACE_" + boost::lexical_cast<std::string>(data.period);
                  if (load->existsProperty(propName))
                  {
                    Workspace_sptr rws1 = load->getProperty(propName);
                    out.ws = boost::dynamic_pointer_cast<DataObjects::Workspace2D>(rws1);
                  }
                }
              }
            }
          }
        }
        catch(std::exception& e)
        {
          g_log.error(e.what());
          return data;
        }
      }

      if (!out.ws) return data;

      API::Axis* axis = out.ws->getAxis(1);
      if (axis->isSpectra())
      {// spectra axis
        if (out.spec < 0)
        {
          if (out.i >= 0)
          {
            out.spec = axis->spectraNo(out.i);
          }
          else
          {// i < 0 && spec < 0 => use start and end
            for(size_t i=0;i<axis->length();++i)
            {
              double s = double(axis->spectraNo(i));
              if (s >= out.start && s <= out.end)
              {
                out.indx.push_back(static_cast<int>(i));
              }
            }
          }
        }
        else
        {
          for(size_t i=0;i<axis->length();++i)
          {
            int j = axis->spectraNo(i);
            if (j == out.spec)
            {
              out.i = static_cast<int>(i);
              break;
            }
          }
        }
        if (out.i < 0 && out.indx.empty())
        {
          return data;
        }
      }
      else
      {// numeric axis
        out.spec = -1;
        if (out.i >= 0)
        {
          out.indx.clear();
        }
        else
        {
          if (out.i < -1)
          {
            out.start = (*axis)(0);
            out.end = (*axis)(axis->length()-1);
          }
          for(size_t i=0;i<axis->length();++i)
          {
            double s = (*axis)(i);
            if (s >= out.start && s <= out.end)
            {
              out.indx.push_back(static_cast<int>(i));
            }
          }
        }
      }

      return out;
    }
Ejemplo n.º 9
0
  void MaskBinsFromTable::exec()
  {
    MatrixWorkspace_sptr inputWS = getProperty("InputWorkspace");
    DataObjects::TableWorkspace_sptr paramWS = getProperty("MaskingInformation");

    // 1. Check input table workspace and column order
    g_log.debug() << "Lines of parameters workspace = " << paramWS->rowCount() << std::endl;

    bool colname_specx = false;
    if (!paramWS)
    {
      throw std::invalid_argument("Input table workspace is not accepted.");
    }
    else
    {
      std::vector<std::string> colnames = paramWS->getColumnNames();
      // check colum name order
      if (colnames.size() < 3)
      {
        g_log.error() << "Input MaskingInformation table workspace has fewer than 3 columns.  " << colnames.size()
                      << " columns indeed" << std::endl;
        throw std::invalid_argument("MaskingInformation (TableWorkspace) has too few columns.");
      }
      if (colnames[0].compare("XMin") == 0)
      {
          // 1. Style XMin, XMax, SpectraList. Check rest
          if (colnames[1].compare("XMax") != 0 || colnames[2].compare("SpectraList") != 0)
          {
              g_log.error() << "INput MaskingInformation table workspace has wrong column order. " << std::endl;
              throw std::invalid_argument("MaskingInformation (TableWorkspace) has too few columns.");
          }
      }
      else if (colnames[0].compare("SpectraList") == 0)
      {
          // 2. Style SpectraList, XMin, XMax
          colname_specx = true;
          if (colnames[1].compare("XMin") != 0 || colnames[2].compare("XMax") != 0)
          {
              g_log.error() << "INput MaskingInformation table workspace has wrong column order. " << std::endl;
              throw std::invalid_argument("MaskingInformation (TableWorkspace) has too few columns.");
          }
      }
      else
      {
          g_log.error() << "INput MaskingInformation table workspace has wrong column order. " << std::endl;
          throw std::invalid_argument("MaskingInformation (TableWorkspace) has too few columns.");
      }
    }

    // 2. Loop over all rows
    bool firstloop = true;
    API::MatrixWorkspace_sptr outputws = this->getProperty("OutputWorkspace");

    for (size_t ib = 0; ib < paramWS->rowCount(); ++ib)
    {
      API::TableRow therow = paramWS->getRow(ib);
      double xmin, xmax;
      std::string speclist;
      if (colname_specx)
      {
          therow >> speclist >> xmin >> xmax;
      }
      else
      {
          therow >> xmin >> xmax >> speclist;
      }

      g_log.debug() << "Row " << ib << " XMin = " << xmin << "  XMax = " << xmax << " SpectraList = " << speclist << std::endl;

      API::IAlgorithm_sptr maskbins = this->createChildAlgorithm("MaskBins", 0, 0.3, true);
      maskbins->initialize();
      if (firstloop)
      {
        maskbins->setProperty("InputWorkspace", inputWS);
        firstloop = false;
      }
      else
      {
        maskbins->setProperty("InputWorkspace", outputws);
      }
      maskbins->setProperty("OutputWorkspace", outputws);
      maskbins->setPropertyValue("SpectraList", speclist);
      maskbins->setProperty("XMin", xmin);
      maskbins->setProperty("XMax", xmax);

      bool isexec = maskbins->execute();
      if (!isexec)
      {
        g_log.error() << "MaskBins() is not executed for row " << ib << std::endl;
        throw std::runtime_error("MaskBins() is not executed");
      }

      outputws = maskbins->getProperty("OutputWorkspace");
      if (!outputws)
      {
        g_log.error() << "OutputWorkspace is not retrieved for row " << ib << ". " << std::endl;
        throw std::runtime_error("OutputWorkspace is not got from MaskBins");
      }
    }
Ejemplo n.º 10
0
/// Execute the algorithm
void SassenaFFT::exec()
{
  const std::string gwsName = this->getPropertyValue("InputWorkspace");
  API::WorkspaceGroup_sptr gws = this->getProperty("InputWorkspace");

  const std::string ftqReName = gwsName + "_fqt.Re";
  const std::string ftqImName = gwsName + "_fqt.Im";

  // Make sure the intermediate structure factor is there
  if(!gws->contains(ftqReName) )
  {
    const std::string errMessg = "workspace "+gwsName+" does not contain an intermediate structure factor";
    this->g_log.error(errMessg);
    throw Kernel::Exception::NotFoundError("group workspace does not contain",ftqReName);
  }

  // Retrieve the real and imaginary parts of the intermediate scattering function
  DataObjects::Workspace2D_sptr fqtRe = boost::dynamic_pointer_cast<DataObjects::Workspace2D>( gws->getItem( ftqReName ) );
  DataObjects::Workspace2D_sptr fqtIm = boost::dynamic_pointer_cast<DataObjects::Workspace2D>( gws->getItem( ftqImName ) );

  // Calculate the FFT for all spectra, retaining only the real part since F(q,-t) = F*(q,t)
  int part=3; // extract the real part of the transform, assuming I(Q,t) is real
  const std::string sqwName = gwsName + "_sqw";
  API::IAlgorithm_sptr fft = this->createChildAlgorithm("ExtractFFTSpectrum");
  fft->setProperty<DataObjects::Workspace2D_sptr>("InputWorkspace", fqtRe);
  if( !this->getProperty("FFTonlyRealPart") )
  {
    part=0; // extract the real part of the transform, assuming I(Q,t) is complex
    fft->setProperty<DataObjects::Workspace2D_sptr>("InputImagWorkspace", fqtIm);
  }
  fft->setPropertyValue("OutputWorkspace", sqwName );
  fft->setProperty<int>("FFTPart",part); // extract the real part
  fft->executeAsChildAlg();
  API::MatrixWorkspace_sptr sqw0 = fft->getProperty("OutputWorkspace");
  DataObjects::Workspace2D_sptr sqw = boost::dynamic_pointer_cast<DataObjects::Workspace2D>( sqw0 );
  API::AnalysisDataService::Instance().addOrReplace( sqwName, sqw );

  // Transform the X-axis to appropriate dimensions
  // We assume the units of the intermediate scattering function are in picoseconds
  // The resulting frequency unit is in mili-eV, thus use m_ps2meV
  API::IAlgorithm_sptr scaleX = this->createChildAlgorithm("ScaleX");
  scaleX->setProperty<DataObjects::Workspace2D_sptr>("InputWorkspace",sqw);
  scaleX->setProperty<double>("Factor", m_ps2meV);
  scaleX->setProperty<DataObjects::Workspace2D_sptr>("OutputWorkspace", sqw);
  scaleX->executeAsChildAlg();

  //Do we apply the detailed balance condition exp(E/(2*kT)) ?
  if( this->getProperty("DetailedBalance") )
  {
    double T = this->getProperty("Temp");
    // The ExponentialCorrection algorithm assumes the form C0*exp(-C1*x). Note the explicit minus in the exponent
    API::IAlgorithm_sptr ec = this->createChildAlgorithm("ExponentialCorrection");
    ec->setProperty<DataObjects::Workspace2D_sptr>("InputWorkspace", sqw);
    ec->setProperty<DataObjects::Workspace2D_sptr>("OutputWorkspace", sqw);
    ec->setProperty<double>("C0",1.0);
    ec->setProperty<double>("C1",-1.0/(2.0*T*m_T2ueV)); // Temperature in units of ueV
    ec->setPropertyValue("Operation","Multiply");
    ec->executeAsChildAlg();
  }

  // Set the Energy unit for the X-axis
  sqw->getAxis(0)->unit() = Kernel::UnitFactory::Instance().create("DeltaE");

  // Add to group workspace, except if we are replacing the workspace. In this case, the group workspace
  // is already notified of the changes by the analysis data service.
  if(!gws->contains(sqwName))
  {
    gws->add( sqwName );
  }
  else
  {
    this->g_log.information("Workspace "+sqwName+" replaced with new contents");
  }

}