MDHistoToWorkspace2D flattens a MDHistoWorkspace into a Workspace2D. It can process MDHistoWorkspaces of any dimensionality. The last dimension of the MDHistoWorkspace becomes the spectra length. Flattening happens such that the first dimension of the MDHistoWorkspace is the slowest varying, the second the second slowest varying and so on.
This tool is useful as many algorithms in Mantid only apply to Workspace2D. After conversion with MDHistoToWorkspace2D such algorithms can also be applied to MD data.
Example - Flatten a small workspace:
ExMDHistoToWorkspace2D
# Create input workspace CreateMDWorkspace(Dimensions=3, Extents='-10,10,-10,10,-10,10', Names='A,B,C', Units='U,U,U', OutputWorkspace='demo') FakeMDEventData(InputWorkspace='demo', PeakParams='32,0,0,0,1') input = BinMD(InputWorkspace='demo', AlignedDim0='A,-2,2,4', AlignedDim1='B,-2,2,4', AlignedDim2='C,-2,2,4')
# Run the algorithm output = MDHistoToWorkspace2D(InputWorkspace='input')
# print 6th group of 4 bins in both input and output workspaces print "part of MD workspace",input.getSignalArray()[1,1] print "corresponding part of 2D workspace",output.dataY(5)
Output:
ExMDHistoToWorkspace2D
part of MD workspace [ 0. 4. 5. 0.] corresponding part of 2D workspace [ 0. 4. 5. 0.]