Animate 3D Plot View

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Nick
Nick le 11 Sep 2013
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)

Réponse acceptée

Adam Filion
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.
  1 commentaire
Nick
Nick le 11 Sep 2013
That did the trick, thanks so much!

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Plus de réponses (2)

Carlos Ramos
Carlos Ramos le 18 Mar 2017
Excelente aporte.. mil gracias!!

John Navarro
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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