rotate a 3D plot and keep it the same size
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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?
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Michael Krumin
2017년 11월 18일
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.
채택된 답변
Xiaofan Fei
2018년 6월 6일
axis vis3d
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Joseph
2024년 1월 30일
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
2024년 1월 30일
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.
추가 답변 (1개)
KSSV
2017년 9월 25일
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.
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KSSV
2017년 9월 25일
Try converting your az and el to Cartesian using pol2cart and specify viewpoint by view([x y z]). With z as your desired value.
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