bug with algebra on workspace groups

[Jon Taylor]

The script fails :

FileName="D:/data/cycle_11_2/POLREF00004711.raw" Load(Filename=FileName,OutputWorkspace="_Raw") ConvertUnits(InputWorkspace="_Raw",OutputWorkspace="_Raw",Target="Wavelength") NormaliseByCurrent(InputWorkspace="_Raw",OutputWorkspace="_D")

Io=CropWorkspace('_D','Io',StartWorkspaceIndex=2,EndWorkspaceIndex=2) I=CropWorkspace('_D','I',StartWorkspaceIndex=4)

I=mtdI?;Io=mtdIo? R=I/Io

Fails with error:

Python.ArgumentError on line 10: "Python argument types in

MantidPythonAPI._binary_op(WorkspaceGroup, WorkspaceGroup, str, str, bool, bool)

did not match C++ signature:

_binary_op(class boost::shared_ptr<class Mantid::API::MatrixWorkspace>, double, class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >, class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >, bool, bool) _binary_op(class boost::shared_ptr<class Mantid::API::MatrixWorkspace>, class boost::shared_ptr<class Mantid::API::MatrixWorkspace>, class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >, class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >, bool, bool)" in file 'MantidFramework.py' at line 459

This is true for +,-,/,*, Divide(‘I’,’Io’,’R’), Divide(‘I’,’Io’,’R’,AllowDifferentNumberSpectra=True)

NOTE: algebra between wksp_groups and single value workspaces is successful in both python and the mantidplot GUI

[Nick Draper]

Bulk move of tickets to iteration 31 at the iteration 30 code freeze

[Nick Draper]

duplicate of #3695

[Janik Zikovsky]

Dupe that was pushed back.

[Stuart Campbell]

This ticket has been transferred to github issue ​4540