Smoothing contact distribution diagram in 3-D

1 次查看（过去 30 天）
Anitha S D
Anitha S D 2011-3-16
I am plotting a distribution diagram after extracting the value of E(size 18 x36). This gives me a scattered plot in 3D. I would like to smoothen it using a Fouries series so that I can obtain a spherical or peanut shaped output. Any inputs on how it can be done?
theta = linspace(0,2*pi,36);
phi = linspace(0,pi,18);
[theta, phi] = meshgrid (theta, phi);
[x,y,z]= sph2cart(theta, phi, E);
surf(x,y,z)
  2 个评论
Ashish Uthama
Ashish Uthama 2011-3-16
It would help if you said more about what E was (some kind of radius?) Is the smoothing just for visualization? (In which case there might be other approaches)
Anitha S D
Anitha S D 2011-3-17
Thanks Ashish. Ya, E is a distribution function and is considered as radius in this case.As you have rightly pointed out the smoothing is for visualization.

请先登录，再进行评论。

请先登录，再回答此问题。

采纳的回答

Ashish Uthama
Ashish Uthama 2011-3-16
If the smoothing is just for visualization, maybe you could use simple low-pass filtering.
E = rand(18,36)+2;
theta = linspace(0,2*pi,36);
phi = linspace(0,pi,18);
[theta, phi] = meshgrid (theta, phi);
[x,y,z]= sph2cart(theta, phi, E);
figure;surf(x,y,z);title('Rough');
%naive 'smoothening' using low-pass filtering
%using a 3 by 3 averaging filter. 1/(3*3) factor will
%normalize the results.
Es = conv2(E, ones(3,3)/9, 'same');
[x,y,z]= sph2cart(theta, phi, Es);
figure;surf(x,y,z);title('Smoothened');

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Uniform Distribution (Continuous) 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by