# What is relationship between position and actor center?

**URL:** https://discourse.vtk.org/t/what-is-relationship-between-position-and-actor-center/11875
**Category:** Support
**Created:** [July 4, 2023, 3:38pm UTC](https://discourse.vtk.org/t/what-is-relationship-between-position-and-actor-center/11875 "2023-07-04T15:38:03Z")
**Posts on this page:** 1
**Page:** 1

<div class="post-metadata">

### Author: ![AlexLuya](https://discourse.vtk.org/user_avatar/discourse.vtk.org/alexluya/32/4036_2.png) [@AlexLuya](https://discourse.vtk.org/u/AlexLuya)
#### Post date: [July 4, 2023, 3:38pm UTC](https://discourse.vtk.org/t/what-is-relationship-between-position-and-actor-center/11875/1 "2023-07-04T15:38:03Z")

</div>

Hello, are these right?

1 - The DataSet.center is the geometric center of the object in model space;  
2 - The Actor.center is the coordinates of DataSet.center in world space;  
3 - Actor.SetPositon will move it to the specified position, after this operation,the Actor.center == targeted position?  
4 - Actor.Position == Actor.Center or Actor.Postion == Actor.Origin(in world space)?