Animate 3D Plot View
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Nick
le 11 Sep 2013
Réponse apportée : John Navarro
le 11 Mai 2021
I'm trying to create an animated GIF of a 3D plot by rotating the plot around, using a method similar to the Animated GIF example in the MATLAB File Exchange ( link ).
I was able to animate the figure on the screen using the view function and pause, but I'm having trouble turning this into a GIF. On the first i loop, on the second iteration (that is, k=2), when it gets to the line "im(:,:,1,k) = rgb2ind(f.cdata,map,'nodither');" it returns the following error:
Subscripted assignment dimension mismatch. Error in test_rotate (line 40) im(:,:,1,k) = rgb2ind(f.cdata,map,'nodither');
Any ideas? Thanks!
CODE:
plot3(xA,yA,zA,'-b',xB,yB,zB,'-r');
title('Plot Title')
xlabel('X data')
ylabel('Y data')
zlabel('Z data')
legend('Data A','Data B')
grid on
az = 0;
el = 90;
view([az,el])
degStep = 5;
detlaT = 0.1;
fCount = 71;
f = getframe;
[im,map] = rgb2ind(f.cdata,256,'nodither');
im(1,1,1,fCount) = 0;
k = 1;
% spin 45°
for i = 0:-degStep:-45
az = i;
([az,el])
f = getframe;
im(:,:,1,k) = rgb2ind(f.cdata,map,'nodither');
k = k + 1;
end
% tilt down
for i = 90:-degStep:15
el = i;
view([az,el])
f = getframe;
im(:,:,1,k) = rgb2ind(f.cdata,map,'nodither');
k = k + 1;
end
% spin left
for i = az:-degStep:-90
az = i;
view([az,el])
f = getframe;
im(:,:,1,k) = rgb2ind(f.cdata,map,'nodither');
k = k + 1;
end
% spin right
for i = az:degStep:0
az = i;
view([az,el])
f = getframe;
im(:,:,1,k) = rgb2ind(f.cdata,map,'nodither');
k = k + 1;
end
% tilt up to original
for i = el:degStep:90
el = i;
view([az,el])
f = getframe;
im(:,:,1,k) = rgb2ind(f.cdata,map,'nodither');
k = k + 1;
end
imwrite(im,map,'Animation.gif','DelayTime',detlaT,'LoopCount',inf)
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Réponse acceptée
Adam Filion
le 11 Sep 2013
Hi Nick, you need to use
f = getframe(gcf)
instead of just 'getframe' to make sure it grabs the right figure window. I quickly tried it on my machine and that fixed it.
Plus de réponses (2)
John Navarro
le 11 Mai 2021
Great answer, but...
Does someone know if it is an updated solution or a easier command for this problem? The accepted solution is from 2013
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