Plot 3D cylindrical voxels filled or empty (boolean)
51 Ansichten (letzte 30 Tage)
Ältere Kommentare anzeigen
Hi,
I have a matrix called h of size 9x36x20 [r, theta, z], containing 1's and 0's. Each number represent a voxel in a cylindrical figure. I would like to be able to plot in a 3d figure those with a 1 with some filled color, while leaving those with a zero transparent (could be with borders though, to make them look like a grid).
I would like to obtain something like this (drawn in inkscape, the matlab figure would be the whole cylinder with some red voxels).
Is it possible? I have already plotted some horizontal slices using patch to show the data at different heights, but this way is more representative
1 Kommentar
Akzeptierte Antwort
darova
am 24 Mai 2020
I draw your data
clc,clear
cla
load example.mat
[m,n,k] = size(diff);
[r,t,z] = ndgrid(1:m,1:n,1:k);
[x,y] = pol2cart(t,r);
ix = logical(diff);
plot3(x(ix),y(ix),z(ix),'.r')
axis vis3d
Here is the result. It's hard to see anything. Can you explain more?
6 Kommentare
darova
am 25 Mai 2020
Easy way to add walls
t = (-15:15)*pi/180; % angle
t = [t(1) t t(end)];
[x1,y1] = pol2cart(t,1); % small arc
[x2,y2] = pol2cart(t,2); % large arc
x2([1 end]) = x1([1 end]);
y2([1 end]) = y1([1 end]);
Weitere Antworten (1)
Siehe auch
Kategorien
Mehr zu Lighting, Transparency, and Shading finden Sie in Help Center und File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!