.. algorithm::

.. summary::

.. relatedalgorithms::

.. properties::

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

The algorithm is similar to :ref:`ChangeLogTime <algm-ChangeLogTime>`, but instead of a defined time shift of the logs, one gets a shift in the indexes of the specified logs. This will make the log shorter by the specified shift.

.. seealso:: :ref:`ChangeLogTime <algm-ChangeLogTime>` and :ref:`CorrectLogTimes <algm-CorrectLogTimes>`

Usage
-----

.. include:: ../usagedata-note.txt

.. testcode:: ShiftLogTime

    import numpy as np
    #Load a workspace
    w = Load('CNCS_7860')
    #get the log times for a particular variable
    original = w.getRun()['Speed5'].times
    #Change the log times
    w = ShiftLogTime(w, LogName='Speed5', IndexShift='2')
    #get the log times for a particular variable, after change
    modified = w.getRun()['Speed5'].times
    #print times
    print("OriginalTimes:  {}".format(np.datetime_as_string(original, timezone='UTC')))
    print("ModifiedTimes:  {}".format(np.datetime_as_string(modified, timezone='UTC')))


.. testcleanup:: ShiftLogTime

   DeleteWorkspace('w')


Output:

.. testoutput:: ShiftLogTime

    OriginalTimes:  ['2010-03-25T16:09:27.780000000Z' '2010-03-25T16:10:01.560998229Z'
     '2010-03-25T16:10:31.514001159Z' '2010-03-25T16:11:25.498002319Z']
    ModifiedTimes:  ['2010-03-25T16:10:31.514001159Z' '2010-03-25T16:11:25.498002319Z']

.. categories::

.. sourcelink::