how can i draw a 3d rectangle with infinitesimal areas (on faces) and volumes inside it and take their coordinates?

Hi all

i am relatively new to matlab and i was trying to draw the rectanlge with lines inside it such each face is dividied into infinitesimal area(which i need to compute) and rectangle can be divided into N volumes inside it (i need to compute it too ) i also need to have their coordinates (volume+areas) and also coordinates of their midpoints

I will appreciate any help if i can get

anyhow i was found somethin over internet may be similar to what i need but it is square and i dont know how i can get the coordinates and midpoints?

clc
clear all
close all
for x=0:1:2;
for y=0:1:2;
plot3([x,x],[0,2],[y,y]);
hold on
end
end
for x=0:1:2;
for y=0:1:2;
  plot3([0,2],[x,x],[y,y]);
hold on
end
end
for x=0:1:2;
for y=0:1:2;
  plot3([y,y],[x,x],[0,2]);
hold on
end
end

here is that program i need something similar but not a square and with the above mentioned coordinates?

Thanks

[Walter Roberson]

Reformatted for you. When you have a moment please read http://www.mathworks.com/matlabcentral/answers/13205-tutorial-how-to-format-your-question-with-markup

[Umz]

Thanks sir....any suggestion for the problem?

[Walter Roberson]

No. MATLAB cannot deal with infinitesimal quantities except in limited symbolic contexts. The smallest quantity that MATLAB can deal with non-symbolically is approximately 1E-310

[Umz]

may be i should have used some other word by 'infinitesimal' i mean small areas and volumes that arise when i divide my rectangle along different sections. obviusly they are not that 'infinitesimal' as of the dimension of 1E-310

[Walter Roberson]

Sorry, is the question about drawing something, or about computing coordinates? Is the grid purely square? regular Rectangular? Different rectangle sizes in different locations? Does the item being subdivided convex? A regular polyhedra? How many dimensions are being worked in? When you talk of subdividing it into N pieces, is that N per axis or N total? If N total, then what if N is not a perfect square number but the area to be subdivided is?