SasView version 3.1.2

New in Version 3.1.2

This release is a major stability improvement, having fixed a serious bug that came to light since release 3.1.1. All users should upgrade.

• Fixes bug #468 broken remove constraint buttons in simultaneous/constrained fitting panel
• Fixes bug #474 resulting from changes in 3.1.1 that had introduced an error in the high-Q of slit-smeared models.
• Fixes bug #478 which would cause wx to run out of IDs and result in SasView crashing even if left alone.
• Fixes bug #479 missing help button on simultaneous/constrained fit page
• Fixes bug #480 GUI resizing issues on simultaneous fit page
• Fixes bug #486 broken Report Results
• Fixes bug #488 redraw issues in fit page

New in Version 3.1.1

• Fixes bug #457 that prevented SasView from starting if the user was not connected to the internet, or was behind a proxy server.

New in Version 3.1.0

• The documentation/help has had a complete overhaul including:
  • A completely new presentation interface (Sphinx).
  • Proof reading!
  • Updating for latest features.
  • A Help (or sometimes '?') button has been added to every panel, and some sub panels if appropriate, linking to the appropriate section in the documentation.
  • The model help has been split so that the Details button now brings up a very short pop-up giving the equation being used while HELP goes to the section in the full documentation describing the model.
  • Extensive help has also been added for the new optimizer engine (see below) including rules of thumb on how and when to choose a given optimizer and what the parameters do.
• The optimizer engine has been completely replaced. The new optimizer still defaults to the standard Levenberg-Marquardt algorithm. However 4 other optimizers are now also available. Each starts with a set of default parameters which can be tuned. The DREAM optimizer takes the longest but is the most powerful and yields rich information including full parameter correlation and uncertainty plots. A results panel has been added to accommodate this.
  • The five new optimizers are:
    • A Levenberg-Marquardt optimizer
    • A Quasi-Newton BFGS optimizer
    • A Nelder-Mead Simplex optimizer
    • A Differential Evolution optimizer
    • A Monte Carlo optimizer (DREAM)
• New models were added:
  • MicelleSphCoreModel (currently residing in the Uncategorized category)
• Existing models were updated:
  • LamellarPS (bug in polydispersity integration fixed)
  • RectangularPrismModel
  • RectangularHollowPrismModel
  • RectangularHollowPrismInfThinWallsModel
• A number of bugs were fixed including a thread crashing issue and an incorrect slit smearing resolution calculation.
• Implemented much more robust error logging to enable much easier debugging in general but particularly the debugging of issues reported by SasView users.