Below steps will show you how to how to display the X,Y and Z coordinates of 3D graph while moving the cursor using 3D Scatter Graph.vi from NI Sample Program.
- Run the 3D Scatter Graph.vi.
- Right click on the graph and select 3D Plot Properties.

- Select Cursor to set the cursor properties.

- Click on the yellow icon at the Cursor List section to create new cursor on the graph.

- At the Cursor General section, ensure to check mark the Enable and Visible properties.
- Set Lock style to Snap to Plot.
- Click OK to save the settings.
- Point the mouse cursor to the created cursor on the graph and move it around the graph to display the coordinates.