Hi Spencer, Yes, this question was answered by you and Chris separately. Thank you for your clarification. Just to conclude this question thread for anyone referencing in future. ExpList->GetCoeff_Offset(e) is valid when the coefficients are ordered in Local expansion wise. i.e. (ExpList->GlobalToLocal()) Ashok On Sun, Feb 14, 2016 at 4:51 PM, Sherwin, Spencer J < s.sherwin@imperial.ac.uk> wrote:
Hi Ashok,
I am not sure if anyone else responded to this. Did we manage to answer any of this in our chat?
There is an index array ExpList->GetCoeff_Offset(e) which gives an integer offset of the global list from GetCoeffs() to tell you where element ‘e’ starts. (There is a similar GetPhys_Offset(e) if you want to get the phys point location for element ‘e’).
Cheers, Spencer.
On 7 Feb 2016, at 23:53, ashok jallepalli <ash.nani@gmail.com> wrote:
Hi everyone, I currently working on a project and would like to do the following task and need some guidance.
(1) Read an .fld file. (2) Load it into vector fields into expansions (exp_u, exp_v, exp_w) (3) Loop through each element in the mesh and do some processing in it and store the result in a new expansion.
I have a problem in step (3). I am able loop through each expansion but unable to understand how should I retrieve coefficients for each element.
Array<OneD,NekDouble> gcoeff = exp_u->GetCoeffs()
- This gets me the coefficients of whole expansion. How do I match coefficients which belong to each element.
These two statements used in the code seem to reorder the coefficients in the expansion, Can someone explain what they are doing. Exp_u->GlobalToLocal() Exp_u->LocalToGlobal()
Would any of these functions reorder coefficients elementwise. So that I use access element[i]'s coefficients as gcoeff[I*numOfCoeffPerEle].
Ashok.
Spencer Sherwin McLaren Racing/Royal Academy of Engineering Research Chair, Professor of Computational Fluid Mechanics, Department of Aeronautics, Imperial College London South Kensington Campus London SW7 2AZ
s.sherwin@imperial.ac.uk +44 (0) 20 759 45052
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