yade-users team mailing list archive

[chiara modenese <c.modenese@xxxxxxxxx>]

2010/5/13 Václav Šmilauer <eudoxos@xxxxxxxx>

> > Not very logical, as I see now (and not documented either). I would
> > change it as follows: if you set O.dt to a non-positive  value, then
> > timestepper will be enabled (and exception raised if there not one). If
> > you set O.dt to a positive value, timestepper will be disabled. Does
> > that sound better?
> >
> > O.usesTimeStepper will then be redundant.
>
> Present for you in r2222 :-)
>
Oh very kind :-)

>
> Now you do
>
> O.dt=.5*utils.PWaveTimeStep(); # sets the timestep
> O.dt=-1                        # disables timestepper
>
> Not that it looks that much better..
>

In fact... I would opt for the option below, still a way to go around
though. But maybe there are not too many solutions if one wants to use both
o.dt and TS.

Chia

>
>
> Yet another option is
>
> 1. if O.dt is assigned negative value, then set O.dt=|Δt| (so that it is
> positive) *and* enable TimeStepper
>
> 2. if O.dt is assigned a positive value, then O.dt=Δt *and* disable
> TimeStepper.
>
> Is that more logical? Then you would just write
>
> O.dt=-.5*utils.PWaveTimeStep()
>
> v.
>
>
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