Is there any command/function to access and change individual entries of
BlockSparseMatrix?
I am looking for something that is similar to the operator( ) or el( )
command/function that is in the documentation of SparseMatrix.
Thanks,
Krishanu
--
The deal.II project is located at
January 2020 09:12:24 UTC-6, Wolfgang Bangerth wrote:
>
> On 1/25/20 4:10 PM, Krishanu Sen wrote:
> >
> > I am able to understand that step-22 has Dirichlet boundary condition on
> all
> > the degrees of freedom corresponding to displacement components. But
I am trying to use the BlockSparseMatrix setup following step - 22.
I am able to understand that step-22 has Dirichlet boundary condition on
all the degrees of freedom corresponding to displacement components. But I
am trying to have the Dirichlet boundary conditions on only some of the
Thanks a lot Bruno. I did find the issue following your suggestion!
On Tuesday, 16 July 2019 15:10:40 UTC-5, Bruno Turcksin wrote:
>
> Krishanu
>
> Le mar. 16 juil. 2019 à 16:00, Krishanu Sen > a écrit :
> >
> > I am using deal.ii for a nonlinear elastic
Thanks Prof. Bangerth for the suggestion. I will definitely learn about the
debugger as it seems like a great tool.
Thanks,
Krishanu
On Thursday, 18 July 2019 03:42:54 UTC-5, Wolfga ng Bangerth wrote:
>
> On 7/16/19 2:10 PM, Bruno Turcksin wrote:
> > No it's not where the error comes from. It
on. Somewhere you set
> something to the wrong size. Can you give us a backtrace? We need to see
> the error message and the code that produces it.
>
> Best,
>
> Bruno
>
> On Tuesday, July 16, 2019 at 3:08:42 PM UTC-4, Krishanu Sen wrote:
>>
>> I am trying to run a co
I am trying to run a code using higher order elements. The code runs fine
when I am using linear [FE_Q(1)] or quadratic [FE_Q(2)] elements.
But when I tried to use cubic elements [FE_Q(3)], the code stops with
an error "ExcIndexRange", which says that the code is trying to access an
index of a
gt; Hi Krishna,
>
> One of my answers in this thread provides the solution you’re looking for,
> namely the suggestion of the LinearOperator class and its associated helper
> functions.
>
> Best,
> Jean-Paul
>
> On 06 Jun 2019, at 19:41, Krishanu Sen >
> wrote:
>
&
Hello,
I have a similar problem where inverse of sparse matrix seems to be
required. I am trying to get the following computation using deal.ii:
(A - B * C^(-1) * D)^(-1) * v,
where A, B, C, D are square sparse matrices of the same size and v is a
vector on which the operation needs to be
