Ticket #11620 (new)

Opened 5 years ago

Last modified 5 years ago

Fit Wizard of MantidPlot shows incorrect value for parameter Scaling of TabulatedFunction

Reported by: Jose Borreguero Owned by: Jose Borreguero
Priority: major Milestone: Release 3.5
Component: GUI Keywords:
Cc: Blocked By:
Blocking: Tester:

Description

In MantidPlot, if one tries to fit a spectrum with a TabulatedFunction using a workspace of type Histogram, the value of parameter Scaling shown in the Fit Wizard corresponds to the actual value of parameter Scaling divided by the spacing in the X-axis. This division should not take place. On the other hand, if TabulatedFunction uses a workspace of type 'Distribution', then the value of parameter Scaling is not divided by the spacing in the X-axis, as it should be.

If one uses a python script for the fitting, instead of the Fit Wizard, then the reported optimized value of parameter Scaling is the correct one, irrespective of the type of the workspace used in TabulatedFunction. Thus the problem seems to be of the Fit Wizard.

Change History

comment:1 Changed 5 years ago by Nick Draper

  • Milestone changed from Release 3.4 to Release 3.5

Moved to R3.5 at the R3.4 code freeze

comment:2 Changed 5 years ago by Stuart Campbell

This ticket has been transferred to github issue ​12458

Note: See TracTickets for help on using tickets.