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Commit 31c9f50d authored by Andreas Klöckner's avatar Andreas Klöckner
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Add tool to plot stability regions

parent 707f39b5
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  • Author Owner

    @mattwala @cory

    Hi guys,

    finally found a little time to finish hacking together the stab region plotter.

    This makes it pretty easy to make comparisons between methods, such as this one between RK4, LSERK, and AB3 (scaled by a factor of 5 to be comparable work-wise with LSERK):

    Stab regions plot

    (Note: These are approximate!)

    Andreas

  • Author Owner

    @mattwala @cory Better plot: simply normalized by the number of RHS calls.

    Stab regions plot

    So the upshot is that along the imaginary axis, they all deliver about equal progress per RHS call, whereas for for negative real (i.e. diffusion-like) RHSs, there are considerable differences.

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