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ShiftLogTime v1

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Summary

Shifts the indexes of the specified log. This will make the log shorter by the specified shift.

See Also

CreateLogTimeCorrection, ChangePulsetime, ChangeLogTime

Properties

Name	Direction	Type	Default	Description
InputWorkspace	Input	MatrixWorkspace	Mandatory	A workspace with units of TOF
OutputWorkspace	Output	MatrixWorkspace	Mandatory	The name to use for the output workspace
LogName	Input	string		Name of the log to add the offset to
IndexShift	Input	number	0	Number of (integer) values to move the log values. Required.

Description

The algorithm is similar to 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.

See also

ChangeLogTime and CorrectLogTimes

Usage

Note

To run these usage examples please first download the usage data, and add these to your path. In Mantid this is done using Manage User Directories.

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')))

Output:

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: AlgorithmIndex | DataHandling\Logs

Source

C++ header: ShiftLogTime.h

C++ source: ShiftLogTime.cpp