How to view a 3D Figure from "below", e.g. z-axis facing downwards

I'm looking for a possibility to view/rotate a North-East-Down Coordinate Frame in a 3D Figure.

By casually plotting a cartesian coordinate system z is facing upwards, and by rotating it with the hand tool, it is not possible to "flip" the figure so that z is facing down.

If you set the z-Axis to 'reverse' the right hand system becomes a left-hand system, thus this is not a solution.

figure
plot3(0,0,0)
line([0 0.1],[0 0],[0 0],'LineWidth',5,'DisplayName','X')
line([0 0],[0 0.1],[0 0],'LineWidth',5,'DisplayName','Y')
line([0 0],[0 0],[0 0.1],'LineWidth',5,'DisplayName','Z')
legend

Take the above picture, I would like a solution where the Z-Line is Facing downwards, without changing the coordinate-system

Answer 1

[Matt J]

Set the CameraUpVector axis property.

figure
plot3(0,0,0)
line([0 0.1],[0 0],[0 0],'LineWidth',5,'DisplayName','X')
line([0 0],[0 0.1],[0 0],'LineWidth',5,'DisplayName','Y')
line([0 0],[0 0],[0 0.1],'LineWidth',5,'DisplayName','Z')
set(gca, 'CameraUpvector',[0,0,-1])
legend

[Stefan]

Thank you, that is the solution to the asked question.

Is there a way to keep that setting even when using the "Rotate 3D" Function within the figure? Right now it immediately resets that setting and flipping the figure back.

[Matt J]

No, I don't think there is a way to lock it, unfortunately.

[Matt J]

After some tinkering, I seem to have managed to lock the orientation of the UpVector with the following. I don't know why they make it so hard...

plot3(0,0,0)
ax=gca;
hListener = addlistener(ax, 'View', 'PostSet',@forceDown);
line([0 0.1],[0 0],[0 0],'LineWidth',5,'DisplayName','X')
line([0 0],[0 0.1],[0 0],'LineWidth',5,'DisplayName','Y')
line([0 0],[0 0],[0 0.1],'LineWidth',5,'DisplayName','Z')
camup(ax, [0,0,-1])

function forceDown(~,evt)
    ax=evt.AffectedObject;
    camup(ax,[0,0,-1])
end