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create a test environment with the size 10x10x10cm

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Hi,
i wanna create a test environment with the size 10x10x10 cm. This should be my workspace and there is no electrical resistance or something like that. there is only air. Then i want to place a cube in the center of that.
But I dont know, how i can create such of matrix.
Can u guys help me pls??? THX
  2 Comments
Walter Roberson
Walter Roberson on 29 May 2013
How finely grained should the cube be? If it is 10 cm per side, do you need it sub-divided into mm ? You mention electrical resistance and air: if you are going to model air-gap electric field breakdowns, then 1 mm per step might be too much for realistic modelling.

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Answers (2)

Muruganandham Subramanian
Muruganandham Subramanian on 29 May 2013
Edited: Muruganandham Subramanian on 29 May 2013
>> B = zeros(10,10,10); %Try this
  3 Comments
sia
sia on 29 May 2013
Edited: sia on 29 May 2013
I dont think this link helps me :(.... I wanna write a function to build that. something like that:
function test_environment
x = 10;
y = 10;
z = 10;
workspace = zeros(x,y,z);
for i=1:1:x
for j=1:1:y
for k=1:1:z
% here i have to include the second matrix B = onse(2,2,2)
end
end
end
end
But i dont know how :( Any idea?

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sia
sia on 29 May 2013
I changed my funktion to this :
function test_environment
workspace = zeros(10,10,10);
cube = ones(2,2,2);
[r,c,d]=size(cube);
xpos=2;ypos=2;zpos=2;
workspace(xpos:xpos+r-1,ypos:ypos+c-1,zpos:zpos+d-1)=B;
end
but when i try to call it like this :
>> test_environment
i get this error:
Undefined function or variable 'test_environment'.
do u se my fail???
  2 Comments
Walter Roberson
Walter Roberson on 29 May 2013
You need to save that code to test_environment.m somewhere on your MATLAB path.
Note: you will not see any output from this function. When it executes it will construct values within its local workspace, and then when the function executes the workspace will be destroyed, leaving you with no net effect.
sia
sia on 29 May 2013
I found this problem thx :)
another question: i wanna display the result i use at the mom
printmat(workspace )
but this is not smart. because i gt this:
--1--> --2--> --3--> --4--> --5-->
--1--> 0 0 0 0 0
--2--> 0 0 0 0 0
--3--> 0 0 0 0 0
--4--> 0 0 0 0 0
--5--> 0 0 0 0 0
--6--> 0 0 0 0 0
and .... I think i get all columns, how can i formate this?????

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