Hello,

I think I have something misunderstood about [P2,P2] fespaces

I have the following fespace that I use on an elasticity problem

`fespace Vh(th, [P2,P2]); Vh [ux, uy], [w, s]; `

To extract the displacement on the x axis I used

`for(int i=0; i < ux.n; i++){ ux1(i)=ux[](i); } `

By doing the same on to get the displacement on the y axis (uy) I get the same values as ux which definently doesnt make sense since I’ve only applied vertical force.

Do I understand something wrong about [P2,P2] spaces?

For a vector fespace `[ux, uy]`

, the array `ux[]`

is the array of all the degrees of freedom of the finite-element space `[P2,P2]`

. The same is also true for ` uy[]`

. So both `ux[](i)`

and `uy[](i)`

return the same `i`

-th degree of freedom of the full fe-space…

To day to get only the ux replacement

```
fespace Wh(th,P2); //scalar FE.
Wh wx,wy; // x,y déplacement
// simple way
wx=ux;
wy=uy:
for(int i=0; i < wx.n; i++){ wx[][i]=ux[](2*i); }
for(int i=0; i < wy.n; i++){ wy[][i]=ux[](2*i+1); }
```