\(\renewcommand\AA{\unicode{x212B}}\)

LogarithmMD v1

../_images/LogarithmMD-v1_dlg.png

LogarithmMD dialog.

Summary

Perform a natural logarithm of a MDHistoWorkspace.

See Also

PowerMD, ExponentialMD

Properties

Name

Direction

Type

Default

Description

InputWorkspace

Input

IMDWorkspace

Mandatory

A MDEventWorkspace or MDHistoWorkspace on which to apply the operation.

OutputWorkspace

Output

IMDWorkspace

Mandatory

Name of the output MDEventWorkspace or MDHistoWorkspace.

Filler

Input

number

0

Some values in a workspace can normally be zeros or may get negative values after transformations log(x) is not defined for such values, so here is the value, that will be placed as the result of log(x<=0) operation Default value is 0

Natural

Input

boolean

True

Switch to choose between natural or base 10 logarithm. Default true (natural).

Description

This executes the natural logarithm operation on a MDHistoWorkspace.

The signal \(a\) becomes \(f = log(a)\)

The error \(da\) becomes \(df^2 = a^2 / da^2\)

This algorithm cannot be run on a MDEventWorkspace. Its equivalent on a MatrixWorkspace is called Logarithm v1.

Categories: AlgorithmIndex | MDAlgorithms\MDArithmetic

Source

C++ header: LogarithmMD.h

C++ source: LogarithmMD.cpp