4D trajectory in Matlab

Hej, I am very new to Matlab and have no programming experience

I would like to obtain 3D trajectory of nuclear motion playing in time. For now I entered a code:

function [] = plotFunc(nc) %UNTITLED4 Summary of this function goes here % Detailed explanation goes here x=nc(1,:); y=nc(2,:); z=nc(3,:);

for i=1:length(x) plot3(x(i),y(i),z(i), '-rs', 'LineWidth',3)

    pause(0.2)
    hold on
    plot3(x,y,z, '-m', 'LineWidth',0.5)
    grid on
    xlabel('x')
    ylabel('y')
    zlabel('z')
    axis([80 95 30 50 0 20])
    M(:,i) = getframe

end

movie(M) save M

It gives me a line and points appear over it in time (it would be better if it drew the trajectory from scratch but it's not my main concern. if u can offer help on that it would also be greatly appreciated though). Now I want to save this animation in some useful format. I used qtwrite command (qtwrite(M)) but it returns an error: ??? Undefined function or method 'qtwrite' for input arguments of type 'struct'.

Do u have any suggestions of how to get this animation?

Answer 1

[Walter Roberson]

Please clarify which version of Matlab you are using, and which OS you are on. qtwrite() existed in Matlab 4, but by Matlab 5 was only available on the Mac (and only worked with colormaps of size 64.)

With very new Matlab there is the VideoWriter class.

You may be able to create AVI

[Paulina]

I am using Matlab on my Mac version 7.11.0 (R2010b)