How to plot the 3D spherical histogram?
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Hello,
I have a set of normal directions in 3D and I want to plot the histogram. But seem matlab only have 2D option. Is there any method I could have a plot like the attached figure? Or any other software could solve the problem?
Thanks a lot!
1 comentario
YONG TANG
el 17 de Mzo. de 2020
hi pei,
did you solve this problem?
recently, I'm also trying to plot some figures like what you mentioned.
could you give me some suggestions?
best,
yong
Respuestas (1)
darova
el 21 de Feb. de 2020
You can create it manually
clc,clear
v = rand(10,3)*2-1;
v0 = v(:,1)*0;
quiver3(v0,v0,v0,v(:,1),v(:,2),v(:,3),1)
axis equal
hold on
[ph,th,r] = cart2sph(v(:,1),v(:,2),v(:,3));
[X,Y,Z] = deal(zeros(4));
for i = 1:size(v,1)
ph1 = ph(i) + pi/180*[-1 1 -1 1]*5; % azimuth phi
th1 = th(i) + pi/180*[1 1 -1 -1]*5; % elevation theta
[x1,y1,z1] = sph2cart(ph1,th1,r(i));
X([6 7 10 11]) = x1;
Y([6 7 10 11]) = y1;
Z([6 7 10 11]) = z1;
surf(X,Y,Z,'facecolor',rand(1,3))
pause(0.5)
end
hold off
alpha(0.5)
1 comentario
darova
el 21 de Feb. de 2020
Set color according to radius
cmap = jet(50);
for i = 1:size(v,1)
%% ...
ix = round(r(i)/max(r)*49)+1;
surf(X,Y,Z,'facecolor',cmap(ix,:))
pause(0.5)
end
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