Create a MergeCalFiles algorithm

[Nick Draper]

to merge the offsets, groups and or selections of two files (possibly incomplete)

[Nick Draper]

(In [12645]) fixes #3198 New MergeCalFiles python algorithm

[Janik Zikovsky]

1. There is no automated test for this algorithm. Here is a possible test script.

2. The last 2 calls in this test script fail with "Unknown exception":

   CreateGroupingWorkspace(InstrumentName="PG3",GroupNames="bank124,bank144,bank164,bank184",OutputWorkspace="pg3_group")
   LoadCalFile(InputWorkspace="pg3_group",CalFilename="/home/8oz/Code/Mantid/Test/AutoTestData/pg3_mantid_det.cal",MakeGroupingWorkspace="0",MakeMaskWorkspace="0",WorkspaceName="pg3")
   
   w = mtd["pg3_offsets"]
   for y in xrange(10000):
   	w.dataY(y)[0] = y*0.00001
   	
   SaveCalFile(OffsetsWorkspace="pg3_offsets", Filename="pg3_offsets.cal")
   SaveCalFile(GroupingWorkspace="pg3_group", Filename="pg3_group.cal")
   
   def check_result():
   		LoadCalFile(InstrumentName="pg3", CalFilename="pg3_merged.cal", WorkspaceName="pg3_merged", MakeGroupingWorkspace=1, MakeOffsetsWorkspace=1)
   		print CheckWorkspacesMatch("pg3_offsets", "pg3_merged_offsets", Tolerance=1e-5)
   
   MergeCalFiles(UpdateFile="pg3_offsets.cal", MasterFile="pg3_group.cal", OutputFile="pg3_merged.cal", MergeGroups=0, MergeOffsets=1, MergeSelections=0)
   check_result()
   
   for mergeGroups in [0, 1]:
   	for  mergeSelections in [0, 1]:
   		MergeCalFiles(UpdateFile="pg3_offsets.cal", MasterFile="pg3_group.cal", OutputFile="pg3_merged.cal", MergeGroups=mergeGroups, MergeOffsets=1, MergeSelections=mergeSelections)
   		check_result()
   
   
   # These fail with UNKNOWN exception!
   MergeCalFiles(UpdateFile="pg3_group.cal", MasterFile="pg3_offsets.cal", OutputFile="pg3_merged.cal", MergeGroups=1, MergeOffsets=0, MergeSelections=0)
   MergeCalFiles(UpdateFile="pg3_group.cal", MasterFile="pg3_offsets.cal", OutputFile="pg3_merged.cal", MergeGroups=1, MergeOffsets=0, MergeSelections=1)
   
   

[Nick Draper]

ticket #3284 created to add the test and deal with the failure mode

[Owen Arnold]

Ticket

[Owen Arnold]

Testing ticket created. Close this issue #3284.

[Stuart Campbell]

This ticket has been transferred to github issue ​4045