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InvertMDDim v1¶

Summary ¶

Inverts dimensions of a MDHistoWorkspace

Properties ¶

Name	Direction	Type	Default	Description
InputWorkspace	Input	IMDHistoWorkspace	Mandatory
OutputWorkspace	Output	IMDHistoWorkspace	Mandatory

Description ¶

InvertMDDim inverts the dimensions of a MDHistoWorkspace. It copies the data around to match the new dimensions. This algorithm is useful when dealing with storage order issues.

Usage ¶

Example - Inverting the axes of a MD Histo Workspace

def outputMDDimensions(ws):
    num_dims = ws.getNumDims()
    print("Name   Bins   Min     Max")
    for dim_index in range(num_dims):
        dim = ws.getDimension(dim_index)
        print("{}      {}      {:.2f}   {:.2f}".format(
              dim.name, dim.getNBins(), dim.getMinimum(), dim.getMaximum()))

#create a test MD event workspace
mdew = CreateMDWorkspace(Dimensions=3, Extents=[-1,1,-5,5,-9,10],
    Names='A, B, C', Units='U, U, U')
FakeMDEventData(mdew, PeakParams=[100000, 0, 0, 0, 1])

#convert to a MDHisto workspace suing BinMD
wsHisto = BinMD(mdew,AlignedDim0='A,-1,1,9',
    AlignedDim1='B,-5,5,5',
    AlignedDim2='C,-9,10,9')

print("The original workspace")
outputMDDimensions(wsHisto)

wsInverted = InvertMDDim(wsHisto)

print("\nInvertMDDim reverses the order of the dimensions")
outputMDDimensions(wsInverted)

The original workspace
Name   Bins   Min     Max
A      9      -1.00   1.00
B      5      -5.00   5.00
C      9      -9.00   10.00

InvertMDDim reverses the order of the dimensions
Name   Bins   Min     Max
C      9      -9.00   10.00
B      5      -5.00   5.00
A      9      -1.00   1.00

Categories: AlgorithmIndex | MDAlgorithms\Transforms