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Effacer les filtres

Merge arrays with different dimensions

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Steffen B.
Steffen B. le 17 Nov 2022
Modifié(e) : Steffen B. le 17 Nov 2022
Hello,
I have a small problem with an array.
I have an initial array with nx x ny positions, then I create another array with nx x ny positions, but I set only the Boundary values.
Afterward, I would like to merge the inner values from Tini (nx-2 x ny-2 positions, marked with a red rectangle in the picture below) into the inner area of the array T (marked with a blue rectangle in the image below).
nx=6;
ny=6;
Tini=300*ones(nx,ny)
TL=400;
TR=800;
TT=600;
TB=900;
T(2:ny-1,1)=TL;
T(2:ny-1,nx)=TR;
T(1,2:nx-1)=TT;
T(ny,2:ny-1)=TB;
T(1,1)=(T(2,1)+T(1,2))/2;
T(nx,ny)=(T(nx-1,ny)+T(nx,ny-1))/2;
T(1,ny)=(T(2,ny)+T(1,ny-1))/2;
T(nx,1)=(T(nx-1,1)+T(nx,2))/2;
The array addition works only with the same dimensions, but I don't want to overwrite the boundary values of T when I add Tini.
I am not sure how to achieve this. Maybe someone has a clue.

Réponse acceptée

Torsten
Torsten le 17 Nov 2022
T(2:nx-1,2:ny-1) = Tini(2:nx-1,2:ny-1)

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