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SetMDUsingMask v1

../_images/SetMDUsingMask-v1_dlg.png

SetMDUsingMask dialog.

Summary

Algorithm to set a MDHistoWorkspace in points determined by a mask boolean MDHistoWorkspace.

Properties

Name

Direction

Type

Default

Description

InputWorkspace

Input

IMDHistoWorkspace

Mandatory

An input MDHistoWorkspace.

MaskWorkspace

Input

IMDHistoWorkspace

Mandatory

A mask MDHistoWorkspace, where true indicates where to set the value.

ValueWorkspace

Input

IMDHistoWorkspace

Workspace to copy to the output workspace over the input. Optional - specify this or Value.

Value

Input

number

Optional

Single number to set in the output workspace. Optional - specify this or ValueWorkspace

OutputWorkspace

Output

IMDHistoWorkspace

Mandatory

An output MDHistoWorkspace.

Description

This algorithm is used to replace values in a MDHistoWorkspace but only at particular points.

A mask MDHistoWorkspace is provided, where non-zero values indicate ‘true’. At these points, the corresponding value in the ValueWorkspace will be set. Any ‘false’ points in the MaskWorkspace are skipped.

If ValueWorkspace is not specified, the you must specify Value, which is a a simple number to set.

In matlab, the equivalent function call would be WS[mask] = OtherWS[mask]

See this page on boolean operations for examples of how to create a mask.

Usage (Python)

# This will zero-out any values below the threshold of 123
MaskWS = WS < 123
ModifiedWS = SetMDUsingMask(InputWorkspace=WS, Value="0", MaskWorkspace=MaskWS)

Categories: AlgorithmIndex | MDAlgorithms\MDArithmetic

Source

C++ header: SetMDUsingMask.h

C++ source: SetMDUsingMask.cpp