PDDetermineCharacterizations dialog.
Table of Contents
| Name | Direction | Type | Default | Description |
|---|---|---|---|---|
| InputWorkspace | Input | MatrixWorkspace | Workspace with logs to help identify frequency and wavelength | |
| Characterizations | Input | TableWorkspace | Table of characterization information | |
| ReductionProperties | Input | string | __pd_reduction_properties | Property manager name for the reduction |
| BackRun | Input | int list | 0 | Empty container run to use. 0 to use value in table, -1 to not use. |
| NormRun | Input | int list | 0 | Normalization run to use. 0 to use value in table, -1 to not use. |
| NormBackRun | Input | int list | 0 | Normalization background run to use. 0 to use value in table, -1 to not use. |
| EmptyEnv | Input | int list | 0 | Empty sample environment run to use. 0 to use value in table, -1 to not use. |
| EmptyInstr | Input | int list | 0 | Empty instrument run to use. 0 to use value in table, -1 to not use. |
| FrequencyLogNames | Input | str list | SpeedRequest1,Speed1,frequency,skf1.speed | Candidate log names for frequency |
| WaveLengthLogNames | Input | str list | LambdaRequest,lambda,skf12.lambda | Candidate log names for wave length |
This algorithm takes an InputWorkspace and Characterizations TableWorkspace and creates a PropertyManager with the appropriate characterization runs. This is done by determining the effective accelerator frequency and center wavelength and choosing the appropriate row from the table.
This algorithm is one of the workflow algorithms that helps SNSPowderReduction v1 and its child algorithm AlignAndFocusPowder v1.
The freqency is found by inspecting the logs (in order) SpeedRequest1, Speed1, and frequency. Whichever one has a nonzero value is used. Simlilarly, the wavelength is taken by inspecting LambdaRequest then Lambda. If either the frequency or wavelength cannot be determined, the algorithm will return a default PropertyManager with mostly zeros.
The PropertyManager will have the following keys and values. Listed in the table is also their default values. The “Alg Property” column is what property of this algorithm is used to override what is in the table. For all of those properties, “0” is interpreted as use the information from the supplied table, “-1” is interpreted as set the value to zero in the resulting PropertyManager.
| Name | Type | Default | Alg Property |
|---|---|---|---|
| frequency | double | 0 | |
| wavelength | double | 0 | |
| bank | integer | 1 | |
| vanadium | integerarray | [0] | NormRun |
| vanadium_background | integerarray | [0] | NormBackRun |
| container | integerarray | [0] | BackRun |
| empty_environment | integerarray | [0] | EmptyEnv |
| empty_instrument | integerarray | [0] | EmptyInstr |
| d_min | string | “” | |
| d_max | string | “” | |
| tof_min | double | 0 | |
| tof_max | double | 0 | |
| wavelength_min | double | 0 | |
| wavelength_max | double | 0 |
In the case of extra columns existing in the TableWorkspace denoting SampleContainer information: if the SampleContainer isn’t a property on the workspace, or the value isn’t one of the column labels, the value of the container column in the supplied TableWorkspace will be used instead.
For a description of the TableWorkspace see PDLoadCharacterizations.
Categories: Algorithms | Workflow\Diffraction\UsesPropertyManager
C++ source: PDDetermineCharacterizations.cpp (last modified: 2017-06-29)
C++ header: PDDetermineCharacterizations.h (last modified: 2018-02-22)