TableWorkspace from find peak alg does not save/load correctly

[Anders Markvardsen]

Loading and saving TableWorkspaces in general works when e.g. load/saving parameter fit results or fit covariance results, but as demonstrated not for TableWorkspaces generated using the Fit 'Find Peak' algorithm as demonstrated below:

1) load say mantid/Test/AutoTestData/argus0026287.nxs 2) plot 1st spectrum 3) In Fit Function window click on Setup button and select 'Find Peaks' 4) This should create a TableWorkspace named argus0026287_PeakList_tmp 5) Optionally delete argus0026287 workspace leaving just the TableWorkspace argus0026287_PeakList_tmp 5) From MantidPlot File menu select Save Project As 6) close MantidPlot 7) reopen MantidPlot and load in saved project file using File->Load->Project

When I run this, before saving argus0026287_PeakList_tmp contains:

0 14.8142 0.0695639 1.0471 -7.5717 0.531546 0 0 0 0 0 -6.15055 0.40134 0 0 0 0 0 -4.19504 0.225437 0

After reloading it - it contains no data.

So something goes wrong either in the saving or loading stage.

The code which saves TableWorkspaces is located in Nexus, see NexusFileIO::writeNexusTableWorkspace and code which load TableWorkspace is located at in DataHandling, see LoadNexusProcessed::loadTableEntry

[Karl Palmen]

Project (as refered to in 'Save Project As') is missing from the Mantid concepts in the wiki.

[Karl Palmen]

I've found out that the saved project file can be opened and read with Notepad (like a txt file). I see that the data from the find peaks appear to be present, so suggesting that the fault is with the load project rather than save project.

[Karl Palmen]

Further investingation shows that the find peaks data found in the Project file is from the table created when looking at the data from find peaks. This table loads correctly when the project is reloaded. What is lost is the capability of the find peaks workspace to generate this table.

[Karl Palmen]

Merge branch 'master' of github.com:mantidproject/mantid

Conflicts:

Code/Mantid/scripts/Inelastic/DirectEnergyConversion.py

For re #4073

Signed-off-by: Karl Palmen <karl.palmen@…>

Changeset: 4f0009e3f978e18a658ef77c7877e9421fccbcd6

[Karl Palmen]

Added support of integer columns to Nexus table workspaces

This is needed to enable peak data to be saved in a MantidPlot project as required in ticket re #4073

Integer data is stored using the NX_INT32 info type.

Signed-off-by: Karl Palmen <karl.palmen@…>

Changeset: f9f82d05fdbee990d7a4cec7a66289fe15627057

[Karl Palmen]

Merge branch 'master' of github.com:mantidproject/mantid

Conflicts:

Code/Mantid/scripts/Inelastic/DirectEnergyConversion.py

For re #4073

Signed-off-by: Karl Palmen <karl.palmen@…>

Changeset: 4f0009e3f978e18a658ef77c7877e9421fccbcd6

[Karl Palmen]

Added support of integer columns to Nexus table workspaces

This is needed to enable peak data to be saved in a MantidPlot project as required in ticket re #4073

Integer data is stored using the NX_INT32 info type.

Signed-off-by: Karl Palmen <karl.palmen@…>

Changeset: f9f82d05fdbee990d7a4cec7a66289fe15627057

[Anders Markvardsen]

saved/loaded mantidplot projects with multiple fit peak workspaces and recovered exactly the same as saved when loading project back in

[Stuart Campbell]

This ticket has been transferred to github issue ​4920