A number of improvements to phase plot functionality are required.
Created a phase plot task to permit busy progress bar, wait cursor. Added a phase plots dialog that permits earlier plots to be re-created. Various related refactorings.
Consideration should be given to abandoning the notion of a phase plot vs raw data mode and simply introducing a Phase Plot tab. Nothing else should change except that we no longer need the slightly complex changeAnalysisType() in Mediator. This would also solve the problem of ambiguity re: which plot is being displayed. A move of the associated plot artefacts to DocumentManager would also be opportune then.
The downside of adding a phase plot tab as suggested below is that whereas now, it is clear that the table-based tabs reflect whatever plot is visible, this relationship will be more difficult to establish in the case where there are two distinct plot tabs.
Added Previous Phase Plots menu item to Analysis menu in http://vstar.svn.sourceforge.net/viewvc/vstar?view=revision&revision=798
Anything else should be dealt with in a separate tracker item.