Fixes live plot issue

[StephenNneji]

Fixes #425

[DrPaulSharp]

This change fixes the problem.

One thing I have noticed though, is that the lines change colour on the final plot when the simplex/de run is finished. Any idea why that is?

[StephenNneji]

This change fixes the problem.

One thing I have noticed though, is that the lines change colour on the final plot when the simplex/de run is finished. Any idea why that is?

If your test script looks like the one below. Then the answer is useLivePlot replaces the data in the plot and keeps the same colour, once RAT finishes plotRefSLD plots new lines over the current plot and uses a different colour for those lines.

useLivePlot(2)
[problem,results] = RAT(problem,controls);
plotRefSLD(problem,results);