Every iteration, or every time new data is added, the chart is redrawn.  A chart with 10,000 data points will draw 10,000 times more slowly than a chart with 1 data point.  That's why you're seeing charts start off with a bang and then slow down rapidly.  It's not a MASON issue, it's how JFreeChart works.



However MASON has a way to fix this: it will *cull* data when the samples get too large, thus keeping the total samples to some maximum number, say, 1000.  It sounds like you have turned off this option [because it's on by default].



If you pop up a time series chart, the option is under Chart Properties.  It's "Cull Data" and "... Over"



Sean



On Mar 4, 2017, at 9:16 AM, Axel Kowald <[log in to unmask]> wrote:



> Hello Everybody,

> I have a MASON simulation that works fine if I run it without GUI, but

> with GUI it starts off normally and then slows down over time until it

> hardly progresses at all. For displaying the simulation results I create

> several TimeSeriesChartingPropertyInspector() and at each simulation

> step I add a data point. 

> 

> Beyond 50000 data points the simulation becomes incredibly slow and I

> wonder if the problem has to do with the underlying JFreeChart !? So has

> anybody else noticed a dramatic slow down once many data points have to

> be displayed ?

> 

> Many thanks,

>   Axel