How can i make a 3D plot that is made of many 2-points line with a direction

I have 2 matrices of XYZ (in one variable) that shows the location of 2 points on an object head-to-tail. I need to make a 3D plot that shows the direction of the line that connects the 2 points together (for example, the 1st matrix shows the head of the object). moreover, i need it to draw one of every 20 rows.

I don't even know where to start... my variable is with 6 (XYZXYZ) columns and about a thousand rows. Thank you very much! Ziv

Answer 1

[Thorsten]

quiver3 is the function that you need

   M = rand(100, 6);
   ind = 1:20:size(M, 1);
   quiver3(M(ind, 1), M(ind, 2), M(ind, 3), M(ind, 4), M(ind, 5), M(ind, 6))

[Ziv Kassner]

Thank you so much. Sadly, it doesn't work as I want it to. I need the arrows to connect both lines so, for example, every blue arrow will start the place it starts as it shows on the picture, but the head will be on the same index of XYZ on the black line.

Ziv