Re: [Getfem-users] mesh_deformation

[Andriy Andreykiv]

Dear Zhenghuai Guo,

Probably you can try to do this with the methods from http://getfem.org/userdoc/interMM.html.

In particular, have a look at 

Interpolation on a cloud of points:

void getfem::ga_interpolation_mti(md, expr, mti, result, extrapolation = 0, rg=mesh_region::all_convexes(), nbpoints = size_type(-1));

I assume you can create a cloud of points from a single point.

But the above is a "heavy" tool which involves interpolation. Of course if you know that you have a node in that specific location, you can extract the degrees of freedom from the displacement vector.

So, let me know what you're using it for.

Best regards,

                       Andriy

On Sat, 16 Mar 2019 at 10:27, Zhenghuai Guo <address@hidden> wrote:

Hi Andriy,

 

I have calculated a displacement field u on a meshfem mfu. For some analysis, I would like to

 

1. Obtain the displacement values on certain geometrical locations based on the geometrical coordinates.

 

Could you please advise me to how to do this?

 

Thank you very much

Regards

Zhenghuai Guo