How to rotate quiver head in 3d in matlab

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Mathias Singsaas Frøseth
编辑： Adam Danz 2021-8-14
I'm plotting a velocity profile in 3d:
To make the arrows in the velocity profile I use "quiver3", the problem is that I want to rotate the arrowhead to be vertical, and not horizontal like they are now. Is this possible to do?
I tried a solution from another thread that sugested to use: g = hgtransform; quiver(x,y,u,v,'Parent',g) set(g,'Matrix',makehgtform('zrotate',pi/4))
But I did not get this to work.
I used: p2 = plot3((15*data_VP5_U)+13,y, Z,'b-','LineWidth',1.5) p3 = plot3(x,(10*data_VP5_V)+20, Z,'k-','LineWidth',1.5)
to plot the lines, and:
f1 = quiver3(13,y(1),Z(450), (16*data_VP5_U(450)),0,0,'b-','MaxHeadSize',0.8)
to plot the quiver.

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回答（1 个）

Prashant Arora
Prashant Arora 2017-4-27
Hi Mathias,
One way to possibly do it is by rotating the quiver arrows.
h = quiver3(0,0,0,0.5,0,0,'b-','MaxHeadSize',0.8)
% Find HGTransform
t = hgtransform('Parent',gca);
% Make a Transform to rotate 90 degrees on x Axis
R = makehgtform('xrotate',pi/2);
% Set the Transformation Matrix
set(t,'Matrix',R);
% Set the Parent of Quiver to the new Transform
set(h,'Parent',t); % The arrows should point correctly now
You will probably need to extrapolate this approach by finding the right hgtransform at the right location.
  2 个评论
Mathias Singsaas Frøseth
Mathias Singsaas Frøseth 2017-5-1
Can you elaborate what you mean by"extrapolate this approach by finding the right hgtransform at the right location."?
Yunchao Yang
Yunchao Yang 2017-5-29
It means that the default rotating location is the center of the axes, and you may change the rotating center as you need.

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