Group detectors extension for the excitations group

[Steve Williams]

The spectra in the output workspace are sums of spectra in the input workspace. Which spectra are added to create which spectra depends a map file. As an example, a map file containing the information below will create an ouput workspace where the first spectrum is the sum of 1,2,4 and the second spectrum is the sum of 5,10,11,12,13,14,15.

1 1,2,4 2 5,10-15

Steve has asked for an example file from the excitiations group

[Steve Williams]

map file that creates 14 spectra from ~700

[Steve Williams]

CORRECTION to the file format, I've attached an example map files and the format appears to be (with each name representing a single ASCII integer):

total_number_of_output_spectra output_spectra_number1 number_of_input_spectra1 input_spec1 input_spec2 input_spec3 input_spec4 input_spec5 input_spec6 output_spectra_number2 number_of_input_spectra2 input_spec1 input_spec2 input_spec3 input_spec4 input_spec5 input_spec6 input_spec7 input_spec8 output_spectra_number3 number_of_input_spectra3 input_spec1 input_spec2 ...

Specifing input spectra ranges with "-" is also supposed to be supported

[Steve Williams]

That format again with line breaks

total_number_of_output_spectra
output_spectra_number1
number_of_input_spectra1
input_spec1 input_spec2 input_spec3 input_spec4
input_spec5 input_spec6
output_spectra_number2
number_of_input_spectra2
input_spec1 input_spec2 input_spec3 input_spec4
input_spec5 input_spec6 input_spec7 input_spec8
output_spectra_number3
number_of_input_spectra3
input_spec1 input_spec2
...

[Steve Williams]

This could take 2 days to implement including tests because it is complicated in these ways

• the user specification has two variants, using comas or dashes
• the user data will require some checking
• some syntax errors should be fed back to the users so they can see to correct the problem

It should be finished on Wednesday 26 August

[Steve Williams]

(In [3219]) GroupDetectors now accepts groups specified in a file as a list of spectra numbers. Still to do: let the algorithm interpret 1-3 as 1,2,3 and update the WIKI refs #777

[Steve Williams]

(In [3227]) GroupDetectors attempted to fix tests by using the full path when loading the test input file refs #777

[Steve Williams]

(In [3231]) Fixed tests that were failing because it couldn't open an input file, now it creates the file before loading it refs #777

[Steve Williams]

(In [3244]) GroupDetectors now accepts ranges of integers specified like 11-120 and there are unit tests. Testing is ongoing and the WIKI needs updating refs #777

[Steve Williams]

(In [3306]) LoadDetectorInfo is a new algorithm that adds information like gas pressure and offset times to the detector propertymap. Minor fixes for GroupDetectors and a the start of a script that will correct for detector efficiency variation refs #941 and #777 and #841

[Russell Taylor]

Tested OK by Martyn.

[Stuart Campbell]

This ticket has been transferred to github issue ​1625