.. algorithm::

.. summary::

.. alias::

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

This is a workflow algorithm that does the bulk of the work for time
focusing diffraction data. This is done by executing several
sub-algorithms as listed below.

#. :ref:`algm-RemovePromptPulse` (event workspace only)
#. :ref:`algm-CompressEvents` (event workspace only)
#. :ref:`algm-CropWorkspace`
#. :ref:`algm-MaskDetectors`
#. :ref:`algm-Rebin` or :ref:`algm-ResampleX` if not d-space binning
#. :ref:`algm-AlignDetectors`
#. If LRef, minwl, or DIFCref are specified:

   #. :ref:`algm-ConvertUnits` to time-of-flight
   #. :ref:`algm-UnwrapSNS`
   #. :ref:`algm-RemoveLowResTOF`
   #. :ref:`algm-ConvertUnits` to d-spacing

#. :ref:`algm-Rebin` if d-space binning
#. :ref:`algm-DiffractionFocussing`
#. :ref:`algm-SortEvents` (event workspace only)
#. :ref:`algm-EditInstrumentGeometry` (if appropriate)
#. :ref:`algm-ConvertUnits` to time-of-flight

Workflow
--------

.. diagram:: AlignAndFocusPowder-v1_wkflw.dot

Usage
-----

**Example: A simple Powgen example**

The files needed for this example are not present in our standard usage data download due to their size.  They can however be downloaded using these links: `PG3_9830_event.nxs <https://github.com/mantidproject/systemtests/blob/master/Data/PG3_9830_event.nxs?raw=true>`_ and `pg3_mantid_det.cal <https://github.com/mantidproject/mantid/raw/master/Test/AutoTestData/pg3_mantid_det.cal>`_.

.. code-block:: python
    
    PG3_9830_event = Load('PG3_9830_event.nxs')
    PG3_9830_event = AlignAndFocusPowder(PG3_9830_event, 
        CalFileName='pg3_mantid_det.cal', Params='100')


.. categories::