Mercurial > octave
diff NEWS @ 25738:8cdaef4c6d44
NEWS: Announce changes to default fsolve options.
* NEWS: Announce changes to default fsolve options.
author | Rik <rik@octave.org> |
---|---|
date | Fri, 03 Aug 2018 14:00:17 -0700 |
parents | c7095a755185 |
children | 8eec0403a370 |
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--- a/NEWS Fri Aug 03 09:03:47 2018 -0700 +++ b/NEWS Fri Aug 03 14:00:17 2018 -0700 @@ -18,6 +18,20 @@ Octave 5.0 : strncmp ("abc", "abc", 100) => true Previously : strncmp ("abc", "abc", 100) => false + ** The fsolve function has been tweaked to use larger step sizes when + calculating the Jacobian of a function with finite differences. + This leads to faster convergence. The default solver options have + also changed to be Matlab compatible. This *may* result in existing + code producing different results. + + Option | New Default | Old Default + ------------------------------------------------ + FinDiffType | "forward" | "central" + MaxFunEvals | 100*length(x0) | Inf + TolFun | 1e-6 | 1e-7 + TolX | 1e-6 | 1e-7 + Updating | "off" | "on" + ** Figure graphic objects have a new property "Number" which is read-only and will return the handle (number) of the figure. However, if the property "IntegerHandle" has been set to "off" then