Adding Points/Markers to measure displacement

Hello,

 

first of all i have to say i am pretty new to MotionView and all the other Altair tools, so i am really overwhelmed while using them.

 

I imported my model of a cylinder with a piston from Inspire into MotionView.

Right now i am trying to add points to it, so i can measure the displacement between the bottom of the cylinder and the bottom of the piston.

 

In the first screenshot you can see the piston inside the cylinder (which i deactivated for clarity):

 

Piston_Cylinder

 

The point at the bottom got imported as I_point of the I-marker of my actuator.

I'm trying to add a point to the bottom of the piston, so i can add a marker for displacement measurement, as you can see in the second screenshot:

 

Point on piston

 

My problem is that i dont know the coordinates of this point in the global reference frame. So i tried to get the coordinates from nodes. But when i click the 'get coordinate fom node'-button nothing happens, even though MotionView shows me some nodes when i leftclick inside my ModelView.

 

nodes

 

Do I have to import the nodes seperatly to select them insde the Point-editor?

 

 

Best Regards,

Aiko