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ModifyDetectorDotDatFile v1

Summary

Modifies an ISIS detector dot data file, so that the detector positions are as in the given workspace

See Also

ResizeRectangularDetector

Properties

Name	Direction	Type	Default	Description
InputWorkspace	Input	Workspace	Mandatory	Workspace with detectors in the positions to be put into the detector dot dat file
InputFilename	Input	string	Mandatory	Path to a detector dot dat file. Must be of type .dat or .txt. Allowed extensions: [‘.dat’, ‘.txt’]
OutputFilename	Input	string	Mandatory	Path to the modified detector dot dat file. Must be of type .dat or .txt. Allowed extensions: [‘.dat’, ‘.txt’]

Description

Modifies an ISIS detector dot data file, so that the detector positions are as in the given workspace. This algorithm can be used to transfer a calibration done via the ApplyCalibration v1 algorithm to an ISIS detector dot dat file by selecting a workspace that has been modified by ApplyCalibration.

A typical ISIS dot data file has a format like this:

DETECTOR.DAT generated by CREATE_DETECTOR_FILE
 286729      14
 det no.  offset    l2     code     theta        phi         w_x         w_y         w_z         f_x       ...
     11   0.000  -3.25800     1   180.00000     0.00000     0.00000     0.00000     0.00000     0.00000    ...
     21   0.000  -1.50400     1   180.00000     0.00000     0.00000     0.00000     0.00000     0.00000    ...

1110001   5.300   2.88936     3    52.28653  -140.67224     0.02540     0.02540     0.00283     0.02750    ...
1110002   5.300   2.88794     3    52.26477  -140.72720     0.02540     0.02540     0.00283     0.02750    ...
   ....

Each row corresponds to a detector whose type is indicated in the code column. The algorithm will only modify values in columns l2, theta and phi and only if the value in the code column is 3, which indicates a PSD gas tube. For more details about the detector dot data file see LoadDetectorInfo#File_format.

Usage

Example - Modify a simple dot dat file

import os

result = Load("MUSR00015189")
group = result[0]
ws_1 = group[0]
ws_2 = group[1]

newFile = os.path.join(os.path.expanduser("~"), "detector_1_M.dat")

# Run the Algorithm
ModifyDetectorDotDatFile(ws_1, "detector_1.dat", newFile)

# Check the output file
print("File Exists: {}".format(os.path.exists(newFile)))

f = open( newFile, 'r' )
file = f.read().split('\n')
f.close()

for line in file[0:4]:
     # print the line truncating before system dependent line break can take effect
     # also stripping off any trailing spaces
     print(line[0:89].rstrip())

Output:

File Exists: True
DETECTOR.DAT generated by CREATE_DETECTOR_FILE and edited by hand and modified by MANTID
  286729      14
  det no.  offset    l2     code     theta        phi         w_x         w_y         w_z
        1   5.300   0.20156     3    43.99491  -129.37500     0.02540     0.02540     0.0

Categories: AlgorithmIndex | DataHandling\Instrument

Source

C++ header: ModifyDetectorDotDatFile.h

C++ source: ModifyDetectorDotDatFile.cpp