C++ MatrixWorkspace_sptr::replaceAxis方法代码示例

void RadiusSum::setUpOutputWorkspace(std::vector<double> &values) {

  g_log.debug() << "Output calculated, setting up the output workspace\n";

  API::MatrixWorkspace_sptr outputWS = API::WorkspaceFactory::Instance().create(
      inputWS, 1, values.size() + 1, values.size());

  g_log.debug() << "Set the data\n";
  MantidVec &refY = outputWS->dataY(0);
  std::copy(values.begin(), values.end(), refY.begin());

  g_log.debug() << "Set the bins limits\n";
  MantidVec &refX = outputWS->dataX(0);
  double bin_size = (max_radius - min_radius) / num_bins;

  for (int i = 0; i < (static_cast<int>(refX.size())) - 1; i++)
    refX[i] = min_radius + i * bin_size;
  refX.back() = max_radius;

  // configure the axis:
  // for numeric images, the axis are the same as the input workspace, and are
  // copied in the creation.

  // for instrument related, the axis Y (1) continues to be the same.
  // it is necessary to change only the axis X. We have to change it to radius.
  if (inputWorkspaceHasInstrumentAssociated(inputWS)) {
    API::Axis *const horizontal = new API::NumericAxis(refX.size());
    auto labelX = UnitFactory::Instance().create("Label");
    boost::dynamic_pointer_cast<Units::Label>(labelX)->setLabel("Radius");
    horizontal->unit() = labelX;
    outputWS->replaceAxis(0, horizontal);
  }

  setProperty("OutputWorkspace", outputWS);
}

void LoadDaveGrp::exec()
{
  const std::string filename = this->getProperty("Filename");

  int yLength = 0;

  MantidVec *xAxis = new MantidVec();
  MantidVec *yAxis = new MantidVec();

  std::vector<MantidVec *> data;
  std::vector<MantidVec *> errors;

  this->ifile.open(filename.c_str());
  if (this->ifile.is_open())
  {
    // Size of x axis
    this->getAxisLength(this->xLength);
    // Size of y axis
    this->getAxisLength(yLength);
    // This is also the number of groups (spectra)
    this->nGroups = yLength;
    // Read in the x axis values
    this->getAxisValues(xAxis, static_cast<std::size_t>(this->xLength));
    // Read in the y axis values
    this->getAxisValues(yAxis, static_cast<std::size_t>(yLength));
    // Read in the data
    this->getData(data, errors);
  }
  this->ifile.close();

  // Scale the x-axis if it is in micro-eV to get it to meV
  const bool isUeV = this->getProperty("IsMicroEV");
  if (isUeV)
  {
    MantidVec::iterator iter;
    for (iter = xAxis->begin(); iter != xAxis->end(); ++iter)
    {
      *iter /= 1000.0;
    }
  }

  // Create workspace
  API::MatrixWorkspace_sptr outputWorkspace = \
      boost::dynamic_pointer_cast<API::MatrixWorkspace>\
      (API::WorkspaceFactory::Instance().create("Workspace2D", this->nGroups,
      this->xLength, yLength));
  // Force the workspace to be a distribution
  outputWorkspace->isDistribution(true);

  // Set the x-axis units
  outputWorkspace->getAxis(0)->unit() = Kernel::UnitFactory::Instance().create(this->getProperty("XAxisUnits"));

  API::Axis* const verticalAxis = new API::NumericAxis(yLength);
  // Set the y-axis units
  verticalAxis->unit() = Kernel::UnitFactory::Instance().create(this->getProperty("YAxisUnits"));

  outputWorkspace->replaceAxis(1, verticalAxis);

  for(int i = 0; i < this->nGroups; i++)
  {
    outputWorkspace->dataX(i) = *xAxis;
    outputWorkspace->dataY(i) = *data[i];
    outputWorkspace->dataE(i) = *errors[i];
    verticalAxis->setValue(i, yAxis->at(i));

    delete data[i];
    delete errors[i];
  }

  delete xAxis;
  delete yAxis;

  outputWorkspace->mutableRun().addProperty("Filename",filename);
  this->setProperty("OutputWorkspace", outputWorkspace);
}