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Description
-----------

If a spectrum in the input workspace contains function :math:`f(x)` then the corresponding spectrum in
the output workspace has its indefinite integral:

:math:`\int_{x_0}^x f(\xi)d\xi`.


Usage
-----

**Example - IntegrateFlux**

.. testcode:: IntegrateFluxExample

    # Create an event workspace
    ws = CreateSampleWorkspace(WorkspaceType="Event", XUnit="Momentum")
    # Integrate all spectra.
    wsOut = IntegrateFlux( ws )

    # Print the result
    print("The input workspace has {} spectra".format(ws.getNumberHistograms()))
    print("The output workspace has {} spectra".format(wsOut.getNumberHistograms()))

Output:

.. testoutput:: IntegrateFluxExample

    The input workspace has 200 spectra
    The output workspace has 200 spectra

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