Re: [Getfem-users] function shift_variables_for_time_integration seem to shift the enable variables.

[Tetsuo Koyama]

Dear Yves ,

Thank you for your reply.
I explain my situation.

I'm solving transient problem by using getfem's Newmark-theme.
There is multiple variable to solve in Newmark-theme and have a
relation in one way.
So I enable/disable the variable and solve for each variable in time step.
In that situation,I had a question that shift_variable is working also
on disable variables or not.

I now could understand that concept of enable/disable is only for
solving not for shift variables.
I think adding the explanation about it to document is redundancy.

I withdraw my opinion.
Thank you for reading.

Best Regards,Tetsuo

2019年2月22日(金) 4:33 Yves Renard <address@hidden>:
>
>
> Dear Tetsuo,
>
> What do you exactly mean by "shift also enable variables" ?
> This method copy the value of the current version of a variable declared in a 
> time integration scheme to the variable (data in fact) which stores the value 
> at the previous time step.
>
> The fact that the variable is enabled or disabled do not have to change the 
> behavior, I think.
>
> By the way, this mecanism of time integration scheme is not used a lot ...
>
> Best Regards,
>
> Yves
>
>
>
> ----- Original Message -----
> From: "Tetsuo Koyama" <address@hidden>
> To: "getfem-users" <address@hidden>
> Sent: Wednesday, February 20, 2019 1:16:35 PM
> Subject: [Getfem-users] function shift_variables_for_time_integration seem to 
> shift the enable variables.
>
> Dear GetFEM++ project
>
> Sorry for my frequently ask questions.
> I guess that "shift_variables_for_time_integration" method in Model
> object will shift also enable variables.(I checked it only by source
> and didn't check it in test.)
> Is it the intended specification? If that so, I will add it to
> document. If it is not the intended I will fix the source.
>
> Could you have a comment ?
>
> Best Regard Tetsuo,