How to generating surface without plotting?

21 Ansichten (letzte 30 Tage)
Daniel Chou
Daniel Chou am 30 Dez. 2020
Kommentiert: Daniel Chou am 30 Dez. 2020
I wonder if it's possible to create a surface by ''surf'' without plotting?
That means, I only want the surface data, but I don't want the figure.
Anyone has idea?
Thanks a lot and happy new year :)
  2 Kommentare
Ameer Hamza
Ameer Hamza am 30 Dez. 2020
Can you explain what surface data are you referring to?
Daniel Chou
Daniel Chou am 30 Dez. 2020
Bearbeitet: Daniel Chou am 30 Dez. 2020
Sure!
For instance,
I would like to generate a surface of ellipsoid by
[x, y, z] = ellipsoid(3,3,5,1,0.5,0.5)
s=surf(x,y,z)
direction = [rand() rand() rand()];
rotate(s,direction,rand()*360)
Then use this surface to do further things
The plot of ellipsoid will be generated when I use ''surf'' command.
I just wanna know if it's possible to purely generate surface by surf without plotting it!
Thanks a lot!

Melden Sie sich an, um zu kommentieren.

Akzeptierte Antwort

Ameer Hamza
Ameer Hamza am 30 Dez. 2020
Since it is a graphical object, you cannot create it without plotting somewhere. However, you can make the figure invisible so that it does not appear on screen
[x, y, z] = ellipsoid(3,3,5,1,0.5,0.5)
f = figure('Visible', 'off');
ax = axes(f);
s = surf(ax,x,y,z)
direction = [rand() rand() rand()];
rotate(s,direction,rand()*360)
  1 Kommentar
Daniel Chou
Daniel Chou am 30 Dez. 2020
I'll try this later.
Thanks for your patience and replying
Happy new year as well :)
Sincerely
Daniel

Melden Sie sich an, um zu kommentieren.

Weitere Antworten (1)

Cris LaPierre
Cris LaPierre am 30 Dez. 2020
If I look at the first example on the surf documentation page, it first creates X, Y and Z, then uses surf to plot/create the surface. So is what you want X,Y and Z?
% Example modified to create surface data but not the surface
[X,Y] = meshgrid(1:0.5:10,1:20);
Z = sin(X) + cos(Y);
% surf(X,Y,Z)
  1 Kommentar
Daniel Chou
Daniel Chou am 30 Dez. 2020
Thanks for response
Actually I'm currently design a code to generate the ellipsoid inclusions in given space.
I try the build-in function of AlphaShape to detect overlapping, if the current ellipsoids are too close to each other, the current ellipsoid will be replaced by a new ellipsoid.
However, since I use the ''surf'' function to convert the ellipsoid [x,y,z] in to surface, the plot (from surf command) will be retained.
The output figure will look like a disaster.
Sincerely and happy new year!
Daniel

Melden Sie sich an, um zu kommentieren.

Tags

Community Treasure Hunt

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

Start Hunting!

Translated by