Error question

edited August 2007 in Nerdery
Just wondering if someone could explain what the "RelTol" and "AbsTol" options for the ODE solvers actually do. And please tell me in layman's terms because I really don't know Matlab that well. Thanks!

Comments

  • shwaipshwaip bluffin' with my muffin Icrontian
    edited August 2007
    never used it, but my guess is:

    absolute tolerance has to do with the absolute error: if the actual value is 0.001, then absolute tolerance says how close you have to be to 0.001

    relative tolerance has to do with a ratio of the error to the actual value: if the total error is 0.0001, this is very close if the actual value is 1, but inaccurate if the value is 0.00001
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