示例#1
0
/** Execute the algorithm.
 */
void ResampleX::exec() {
  // generically having access to the input workspace is a good idea
  MatrixWorkspace_sptr inputWS = getProperty("InputWorkspace");
  MatrixWorkspace_sptr outputWS = getProperty("OutputWorkspace");
  bool inPlace = (inputWS == outputWS); // Rebinning in-place
  m_isDistribution = inputWS->isDistribution();
  m_isHistogram = inputWS->isHistogramData();
  int numSpectra = static_cast<int>(inputWS->getNumberHistograms());

  // the easy parameters
  m_useLogBinning = getProperty("LogBinning");
  m_numBins = getProperty("NumberBins");
  m_preserveEvents = getProperty("PreserveEvents");

  // determine the xmin/xmax for the workspace
  vector<double> xmins = getProperty("XMin");
  vector<double> xmaxs = getProperty("XMax");
  string error = determineXMinMax(inputWS, xmins, xmaxs);
  if (!error.empty())
    throw std::runtime_error(error);

  bool common_limits = true;
  {
    double xmin_common = xmins[0];
    double xmax_common = xmaxs[0];
    for (size_t i = 1; i < xmins.size(); ++i) {
      if (xmins[i] != xmin_common) {
        common_limits = false;
        break;
      }
      if (xmaxs[i] != xmax_common) {
        common_limits = false;
        break;
      }
    }
  }
  if (common_limits) {
    g_log.debug() << "Common limits between all spectra\n";
  } else {
    g_log.debug() << "Does not have common limits between all spectra\n";
  }

  // start doing actual work
  EventWorkspace_const_sptr inputEventWS =
      boost::dynamic_pointer_cast<const EventWorkspace>(inputWS);
  if (inputEventWS != NULL) {
    if (m_preserveEvents) {
      EventWorkspace_sptr outputEventWS =
          boost::dynamic_pointer_cast<EventWorkspace>(outputWS);
      if (inPlace) {
        g_log.debug() << "Rebinning event workspace in place\n";
      } else {
        g_log.debug() << "Rebinning event workspace out of place\n";

        // copy the event workspace to a new EventWorkspace
        outputEventWS = boost::dynamic_pointer_cast<EventWorkspace>(
            API::WorkspaceFactory::Instance().create(
                "EventWorkspace", inputWS->getNumberHistograms(), 2, 1));
        // copy geometry over.
        API::WorkspaceFactory::Instance().initializeFromParent(
            inputEventWS, outputEventWS, false);
        // copy over the data as well.
        outputEventWS->copyDataFrom((*inputEventWS));
      }

      if (common_limits) {
        // get the delta from the first since they are all the same
        MantidVecPtr xValues;
        double delta =
            this->determineBinning(xValues.access(), xmins[0], xmaxs[0]);
        g_log.debug() << "delta = " << delta << "\n";
        outputEventWS->setAllX(xValues);
      } else {
        // initialize progress reporting.
        Progress prog(this, 0.0, 1.0, numSpectra);

        // do the rebinning
        PARALLEL_FOR2(inputEventWS, outputWS)
        for (int wkspIndex = 0; wkspIndex < numSpectra; ++wkspIndex) {
          PARALLEL_START_INTERUPT_REGION
          MantidVec xValues;
          double delta = this->determineBinning(xValues, xmins[wkspIndex],
                                                xmaxs[wkspIndex]);
          g_log.debug() << "delta[wkspindex=" << wkspIndex << "] = " << delta
                        << " xmin=" << xmins[wkspIndex]
                        << " xmax=" << xmaxs[wkspIndex] << "\n";
          outputEventWS->getSpectrum(wkspIndex)->setX(xValues);
          prog.report(name()); // Report progress
          PARALLEL_END_INTERUPT_REGION
        }
        PARALLEL_CHECK_INTERUPT_REGION
      }

      this->setProperty(
          "OutputWorkspace",
          boost::dynamic_pointer_cast<MatrixWorkspace>(outputEventWS));
    }    // end if (m_preserveEvents)
    else // event workspace -> matrix workspace
    {
      //--------- Different output, OR you're inplace but not preserving Events
      //--- create a Workspace2D -------
      g_log.information() << "Creating a Workspace2D from the EventWorkspace "
                          << inputEventWS->getName() << ".\n";

      // Create a Workspace2D
      // This creates a new Workspace2D through a torturous route using the
      // WorkspaceFactory.
      // The Workspace2D is created with an EMPTY CONSTRUCTOR
      outputWS = WorkspaceFactory::Instance().create("Workspace2D", numSpectra,
                                                     m_numBins, m_numBins - 1);
      WorkspaceFactory::Instance().initializeFromParent(inputWS, outputWS,
                                                        true);
      // Initialize progress reporting.
      Progress prog(this, 0.0, 1.0, numSpectra);

      // Go through all the histograms and set the data
      PARALLEL_FOR2(inputEventWS, outputWS)
      for (int wkspIndex = 0; wkspIndex < numSpectra; ++wkspIndex) {
        PARALLEL_START_INTERUPT_REGION

        // Set the X axis for each output histogram
        MantidVec xValues;
        double delta =
            this->determineBinning(xValues, xmins[wkspIndex], xmaxs[wkspIndex]);
        g_log.debug() << "delta[wkspindex=" << wkspIndex << "] = " << delta
                      << "\n";
        outputWS->setX(wkspIndex, xValues);

        // Get a const event list reference. inputEventWS->dataY() doesn't work.
        const EventList &el = inputEventWS->getEventList(wkspIndex);
        MantidVec y_data, e_data;
        // The EventList takes care of histogramming.
        el.generateHistogram(xValues, y_data, e_data);

        // Copy the data over.
        outputWS->dataY(wkspIndex).assign(y_data.begin(), y_data.end());
        outputWS->dataE(wkspIndex).assign(e_data.begin(), e_data.end());

        // Report progress
        prog.report(name());
        PARALLEL_END_INTERUPT_REGION
      }
      PARALLEL_CHECK_INTERUPT_REGION

      // Copy all the axes
      for (int i = 1; i < inputWS->axes(); i++) {
        outputWS->replaceAxis(i, inputWS->getAxis(i)->clone(outputWS.get()));
        outputWS->getAxis(i)->unit() = inputWS->getAxis(i)->unit();
      }

      // Copy the units over too.
      for (int i = 0; i < outputWS->axes(); ++i)
        outputWS->getAxis(i)->unit() = inputWS->getAxis(i)->unit();
      outputWS->setYUnit(inputEventWS->YUnit());
      outputWS->setYUnitLabel(inputEventWS->YUnitLabel());

      // Assign it to the output workspace property
      setProperty("OutputWorkspace", outputWS);
    }
    return;
  } else // (inputeventWS != NULL)
示例#2
0
/** Execute the algorithm.
 */
void ResampleX::exec() {
  // generically having access to the input workspace is a good idea
  MatrixWorkspace_sptr inputWS = getProperty("InputWorkspace");
  MatrixWorkspace_sptr outputWS = getProperty("OutputWorkspace");
  bool inPlace = (inputWS == outputWS); // Rebinning in-place
  m_isDistribution = inputWS->isDistribution();
  m_isHistogram = inputWS->isHistogramData();
  const int numSpectra = static_cast<int>(inputWS->getNumberHistograms());

  // the easy parameters
  m_useLogBinning = getProperty("LogBinning");
  m_numBins = getProperty("NumberBins");
  m_preserveEvents = getProperty("PreserveEvents");

  // determine the xmin/xmax for the workspace
  vector<double> xmins = getProperty("XMin");
  vector<double> xmaxs = getProperty("XMax");
  string error = determineXMinMax(inputWS, xmins, xmaxs);
  if (!error.empty())
    throw std::runtime_error(error);

  bool common_limits = true;
  {
    double xmin_common = xmins[0];
    double xmax_common = xmaxs[0];
    for (size_t i = 1; i < xmins.size(); ++i) {
      if (xmins[i] != xmin_common) {
        common_limits = false;
        break;
      }
      if (xmaxs[i] != xmax_common) {
        common_limits = false;
        break;
      }
    }
  }
  if (common_limits) {
    g_log.debug() << "Common limits between all spectra\n";
  } else {
    g_log.debug() << "Does not have common limits between all spectra\n";
  }

  // start doing actual work
  EventWorkspace_const_sptr inputEventWS =
      boost::dynamic_pointer_cast<const EventWorkspace>(inputWS);
  if (inputEventWS != nullptr) {
    if (m_preserveEvents) {
      if (inPlace) {
        g_log.debug() << "Rebinning event workspace in place\n";
      } else {
        g_log.debug() << "Rebinning event workspace out of place\n";
        outputWS = inputWS->clone();
      }
      auto outputEventWS =
          boost::dynamic_pointer_cast<EventWorkspace>(outputWS);

      if (common_limits) {
        // get the delta from the first since they are all the same
        BinEdges xValues(0);
        const double delta = this->determineBinning(xValues.mutableRawData(),
                                                    xmins[0], xmaxs[0]);
        g_log.debug() << "delta = " << delta << "\n";
        outputEventWS->setAllX(xValues);
      } else {
        // initialize progress reporting.
        Progress prog(this, 0.0, 1.0, numSpectra);

        // do the rebinning
        PARALLEL_FOR_IF(Kernel::threadSafe(*inputEventWS, *outputWS))
        for (int wkspIndex = 0; wkspIndex < numSpectra; ++wkspIndex) {
          PARALLEL_START_INTERUPT_REGION
          BinEdges xValues(0);
          const double delta = this->determineBinning(
              xValues.mutableRawData(), xmins[wkspIndex], xmaxs[wkspIndex]);
          g_log.debug() << "delta[wkspindex=" << wkspIndex << "] = " << delta
                        << " xmin=" << xmins[wkspIndex]
                        << " xmax=" << xmaxs[wkspIndex] << "\n";
          outputEventWS->setHistogram(wkspIndex, xValues);
          prog.report(name()); // Report progress
          PARALLEL_END_INTERUPT_REGION
        }
        PARALLEL_CHECK_INTERUPT_REGION
      }
    }    // end if (m_preserveEvents)
    else // event workspace -> matrix workspace
    {
      //--------- Different output, OR you're inplace but not preserving Events
      g_log.information() << "Creating a Workspace2D from the EventWorkspace "
                          << inputEventWS->getName() << ".\n";
      outputWS = create<DataObjects::Workspace2D>(
          *inputWS, numSpectra, HistogramData::BinEdges(m_numBins + 1));

      // Initialize progress reporting.
      Progress prog(this, 0.0, 1.0, numSpectra);

      // Go through all the histograms and set the data
      PARALLEL_FOR_IF(Kernel::threadSafe(*inputEventWS, *outputWS))
      for (int wkspIndex = 0; wkspIndex < numSpectra; ++wkspIndex) {
        PARALLEL_START_INTERUPT_REGION

        // Set the X axis for each output histogram
        MantidVec xValues;
        const double delta =
            this->determineBinning(xValues, xmins[wkspIndex], xmaxs[wkspIndex]);
        g_log.debug() << "delta[wkspindex=" << wkspIndex << "] = " << delta
                      << "\n";
        outputWS->setBinEdges(wkspIndex, xValues);

        // Get a const event list reference. inputEventWS->dataY() doesn't work.
        const EventList &el = inputEventWS->getSpectrum(wkspIndex);
        MantidVec y_data, e_data;
        // The EventList takes care of histogramming.
        el.generateHistogram(xValues, y_data, e_data);

        // Copy the data over.
        outputWS->mutableY(wkspIndex) = std::move(y_data);
        outputWS->mutableE(wkspIndex) = std::move(e_data);

        // Report progress
        prog.report(name());
        PARALLEL_END_INTERUPT_REGION
      }
      PARALLEL_CHECK_INTERUPT_REGION

      // Copy all the axes
      for (int i = 1; i < inputWS->axes(); i++) {
        outputWS->replaceAxis(i, inputWS->getAxis(i)->clone(outputWS.get()));
        outputWS->getAxis(i)->unit() = inputWS->getAxis(i)->unit();
      }

      // Copy the units over too.
      for (int i = 0; i < outputWS->axes(); ++i) {
        outputWS->getAxis(i)->unit() = inputWS->getAxis(i)->unit();
      }
      outputWS->setYUnit(inputEventWS->YUnit());
      outputWS->setYUnitLabel(inputEventWS->YUnitLabel());
    }
    // Assign it to the output workspace property
    setProperty("OutputWorkspace", outputWS);
    return;
  } else // (inputeventWS != NULL)