InvertMDDim v1

../_images/InvertMDDim-v1_dlg.png

InvertMDDim dialog.

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 "%s      %i      %.2f   %.2f" % (dim.getName(),
             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: Algorithms | MDAlgorithms\Transforms

Source

C++ source: InvertMDDim.cpp

C++ header: InvertMDDim.h