SavePHX dialog.
Table of Contents
| Name | Direction | Type | Default | Description |
|---|---|---|---|---|
| InputWorkspace | Input | MatrixWorkspace | Mandatory | The input workspace |
| Filename | Input | string | Mandatory | The filename to use for the saved data |
Saves the geometry information of the detectors in a workspace into a PHX format ASCII file. The angular positions and angular sizes of the detectors are calculated using FindDetectorsPar v1 algorithm.
Mantid generated PHX file is an ASCII file consisting of the header and 7 text columns. Header contains the number of the rows in the phx file excluding the header (number of detectors). The column has the following information about a detector:
| Column Number | Column Description |
|---|---|
| 1st | secondary flightpath,e.g. sample to detector distance (m) |
| 2nd | 0 |
| 3rd | scattering angle (deg) |
| 4th | azimuthal angle (deg) (west bank = 0 deg, north bank = 90 deg etc.) Note the reversed sign convention wrt the .par files. For details, see: SavePAR v1 |
| 5th | angular width e.g. delta scattered angle (deg) |
| 6th | angular height e.g. delta azimuthal angle (deg) |
| 7th | detector ID – this is Mantid specific value, which may not hold similar meaning in files written by different applications. |
In standard phx file only the columns 3,4,5 and 6 contain useful information. You can expect to find column 1 to be the secondary flightpath and the column 7 – the detector ID in Mantid-generated phx files only.
Example - Save PHX file
# import os funcions to work with folders
import os
# create sample workspace
ws=CreateSampleWorkspace()
# test file name
file_name = os.path.join(config["defaultsave.directory"], "TestSavePhx.phx")
# save the file
SavePHX(ws,Filename=file_name);
print("target file exists? {0}".format(os.path.exists(file_name)))
Output:
target file exists? True
Categories: Algorithms | DataHandling\SPE | Inelastic\DataHandling
C++ source: SavePHX.cpp (last modified: 2017-11-16)
C++ header: SavePHX.h (last modified: 2016-06-07)