How to plot a 51*51*51 array

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desah
desah 2012-11-23
回答： Michael scheinfeild 2014-7-9
Hi, i'm a newbie of this community.I'm sorry for any next mistakes.For my thesis of dinamical of the structrures at university i have to calculate the pressure into an acustic hole.Here is the scripts for the calcus of this pressure in every point of the hole.the hole is a box with this dimensions(pi,2,1).i divided it into a grid of 51x51x51 points.
n_nod=51; %%%number of nodes for each side x=linspace(0,pi,n_nod); y=linspace(0,2,n_nod); z=linspace(0,1,n_nod);
r_int=zeros(n_nod,n_nod,n_nod);
Ppr=zeros(n_nod,n_nod,n_nod);
for i=1:1:n_nod for j=1:1:n_nod for h=1:1:n_nod
r_int(i,j,h)=((0.5-x(i))^2+(1.5-y(j))^2+(1.5-z(h))^2)^0.5;
Ppr(i,j,h)=1/(2*pi*r_int(i,j,h));
end
end
end
the script generate an array Ppr of 51x51x51 elements.I'd like to plot Ppr in a 3D graph in different colour in fuction of the each points. which command can add to the script to do this??? thanks to all for any answer!
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desah
desah 2012-11-23
编辑：desah 2012-11-23
i don't know how use mesh.I've tried to add it in this way mesh(Ppr(:,:,1),Ppr(:,:,2),Ppr(:,:,3)) but the program returns just a multicolour line in a 3D-space.if i add the same command inside the for loop it never stop the loop.

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回答（3 个）

Azzi Abdelmalek
Azzi Abdelmalek 2012-11-23
编辑：Azzi Abdelmalek 2012-11-23
mesh(Ppr(:,:,1),Ppr(:,:,2),Ppr(:,:,3))
desah
desah 2012-11-23
编辑：desah 2012-11-23
thank you for the fast answer.I've tried to add mesh(Ppr(:,:,1),Ppr(:,:,2),Ppr(:,:,3)) after the for loop but it plots only the last values on a 3D space and it appears like a multicolour line.if i add the string into the for loop it never stops and goes in overclock.I just want to visualize a volume 51x51x51 points in differt colours.is it possible or not? Regard
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Azzi Abdelmalek
Azzi Abdelmalek 2012-11-23
I can't tell what do you want to plot? Can you precize what do you want to plot, what are x, y and z
desah
desah 2012-11-24
编辑：desah 2012-11-24
x,y,z are 3 vectors of 51 points that form a grid box.(x,y,z=linspace(:,:.51)).I want to plot the matrix P that is function of x,y,z together.(I've calculated P in all the points of the space;you can verify this if you run my script,)In this way P is an array of 51*51*51 elements.I'd like to visualize a cube of different colours that represent the trend of the pressure inside the box in all points.

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Michael scheinfeild
i think you need to look at volume visualization functions like figure,slice(Ppr,x,y,z)

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