To load a new PLY file into PlyEdit, click on the right arrow to open up a file selection dialog. If a mesh is already being edited, loading a new PLY file will replace that mesh. If you wish to add a PLY into the mesh being edited, use the Import Align Combine tools instead.
Clicking on the Mesh button itself will open up a panel showing various details about the loaded file.
F
Number of faces.
P
Number of points.
Cntr
XYZ position in millimeters of the center of mesh.