rotate a 3D plot and keep it the same size
45 visualizzazioni (ultimi 30 giorni)
Mostra commenti meno recenti
I'm creating a GIF from a series of 3D plots, each one rotated from the previous by changing the viewpoint. Here is a snippet that does the frame generation:
for az=0:5:355
view([az,el]);
drawnow;
frame = getframe(gcf);
im = frame2im(frame);
[imind,cm] = rgb2ind(im,256);
imwrite(imind,cm,filename,'WriteMode','append','DelayTime',dt);
end
The problem I'm having is that each frame is magnified to fill the figure window, causing the plot to change size as it rotates. Here is a link to the GIF (it is also attached).
What view settings must I change to keep the 3D surface the same apparent size as I rotate it?
4 Commenti
Michael Krumin
il 18 Nov 2017
Hi,
The relevant axis properties are: 'CameraTarget', 'CameraPosition', 'CameraViewAngle', and 'CameraViewAngleMode'.
If you change the 'viewing orientation' of the 3D plot using view(az, el), then the distance of the camera from your 3D object doesn't change, and you only need to set 'CameraViewAngle' to control the 'zoom'. After you set it once, then the 'CameraViewAngleMode' becomes 'manual', and the 'CameraViewAngle' doesn't change on every call to view(az, el), so no need to reset it for every frame.
Risposta accettata
Xiaofan Fei
il 6 Giu 2018
axis vis3d
4 Commenti
Joseph
il 30 Gen 2024
Did not work for me. I'm trying to fix the exact same issue as in the OP's gif but nothing seems to help. Very frustrating that this is the default behavior.
Joseph
il 30 Gen 2024
Just figured it out after an hour of searching. Misunderstood what CameraViewAngle was and had it set to 0. After setting to 15 and manual it now works.
Più risposte (1)
KSSV
il 25 Set 2017
Read about axis, with this you can limit the axis. Also read about xlim, ylim and zlim with these you can set the limits of specific axes.
2 Commenti
KSSV
il 25 Set 2017
Try converting your az and el to Cartesian using pol2cart and specify viewpoint by view([x y z]). With z as your desired value.
Vedere anche
Categorie
Scopri di più su Graphics Performance in Help Center e File Exchange
Prodotti
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!