the question about visualizatiion of 3D FDTD using matlab ?

hi all...

anybody can help me....
I had make a 3d fdtd program using matlab, but i have difficults to make program codes of it to visualize the fields distribution in 3D ( Ex, Ey, Ez) ?

Re: the question about visualizatiion of 3D FDTD using matla

hmmm....i dont know what's object that you are visualized ???
may be for 2D generally this is can u try..

after script of field array of your program, u write :

% Movie initialization
tview,: )=ez,:,kobs); <-- to see field distr. at z= kobs
subplot(1,1,1),pcolor(tview');
shading flat;
caxis([-0.1 0.1]); <---- range of field intensity in color
axis([1 IE 1 JE]); <--- range of x and y axis
colorbar;
axis image;
title(['Ez at time step',= 0']);
xlabel('i coordinate');
ylabel('j coordinate');

rect=get(gcf,'Position');
rect(1:2)=[0 0];

M=moviein(nmax/4,gcf,rect);

after script of " update field", u write :

% visualize fields
if mod(n,4)==0; <--- to see figure for 4 time delay

timestep=int2str;

tview,: )=ez,:,kobs);

subplot(1,1,1),pcolor(tview');
shading flat;
caxis([-0.1 0.1]);
axis([1 IE 1 JE]);
colorbar;
axis image;
title(['Ez(i,j,k= ?), time step = ',timestep]);
xlabel(' i coordinate i');
ylabel('j coordinate');

nn=n/4;
M,nn)=getframe(gcf,rect);

end;

end
movie(gcf,M,0,10,rect);

yea..may be U just need to try it....

but if to visualize 3D...I'm can not too.., may be the other friends can help... :roll:

ok peep..thanks.
but I'm still difficults how to simulate the field distribution ( Ex, Ey, Ez) in three dimension.

(I'm beginner)

Re: the question about visualizatiion of 3D FDTD using matla

waves said:

ok peep..thanks.
but I'm still difficults how to simulate the field distribution ( Ex, Ey, Ez) in three dimension.

(I'm beginner)

Click to expand...

if you meen you need to shoe the results in 3D, i should suggest you to use inherent 3D visualization of Matlab Toolboxs. i dont now remember the toolbox, but i think they are in PDE toolbox, i used it befor, it was wonderfull and so pretty. sorry that i cant remember exactly, try to search matlab help. if you still couldnt find it, i will help, just PM me.

thanks Mamali,

Are there anybody have a 3D FDTD matlab code with PML ?