I want this two stl files to overlap each other

So i will give a quick background, this are two stl files, one is fully deformed at bottoma and other is non deformed. I want them to overlap as to measure displacement of nodes from non deformed to deformed. I have tried to show pair them with pointcloud function byt somehow they are not aligning and sitting at a distance from each other.

Answer 1

[KSSV]

Do both the stl files have same number of nodal connectivities and nodes? If so you can subtract them. If not you can make your own grid and get the respective Z values for both the stl files; now they have common (x,y) and then you can find the difference and get the displacements.

[Ajay Deshmukh]

Hey, can you spoon feed this please? The stl files are generated from MRI of same person just with different base (hard/soft and one side hanging). So I will need to go with grid. Can you explain how to go with that?

[KSSV]

Read about griddata.