If x-list changes and selected parameter disappear then chart become clear

[GoogleCodeExporter]

Jannis (Corr 14.4.2010):
I created such a simulation and then I wanted to delete this simulation so 
that I have only the current simulation. If i click the simulation I want to 
delete and then the delete symbol I get the following:
But why the diagram A=f(Qms) disappeared? That is not correct! The x-axis 
selection (in this case Qmsus) disappears that’s why we have no diagram.

Original issue reported on code.google.com by victorbarinov on 28 Apr 2010 at 12:58

[GoogleCodeExporter]

Victor:
Yes, x-axis list changed and Qmsus disappeared. Why the hiding of diagram is 
wrong 
behavior of the program? If program must to select something in case of 
disappearing 
of selected item, then we need an exact algorithm what to do. There are many 
solutiona and I don't know what of them is most prefered by you. And I think 
that 
current behavior is the best. It almost give a hint for user that he removed 
current 
x parameter from list.
So if you want I can apply some rule to select something instead of nothing, 
but then 
I need the explanation of this rule from you.
Thanks.

Original comment by victorbarinov on 28 Apr 2010 at 1:03

• Changed state: Started