# Is it possible to get the ZMap from the Point cloud data?

**URL:** https://discourse.vtk.org/t/is-it-possible-to-get-the-zmap-from-the-point-cloud-data/2418
**Category:** Support
**Created:** [January 14, 2020, 12:00pm UTC](https://discourse.vtk.org/t/is-it-possible-to-get-the-zmap-from-the-point-cloud-data/2418 "2020-01-14T12:00:35Z")
**Posts on this page:** 1
**Page:** 1

<div class="post-metadata">

### Author: ![Kim\_William](https://discourse.vtk.org/user_avatar/discourse.vtk.org/kim_william/32/373_2.png) [@Kim\_William](https://discourse.vtk.org/u/Kim_William)
#### Post date: [January 14, 2020, 12:00pm UTC](https://discourse.vtk.org/t/is-it-possible-to-get-the-zmap-from-the-point-cloud-data/2418/1 "2020-01-14T12:00:35Z")

</div>

Hi all.  
I have a question about the ZMap and the Point cloud data.

Because the Point cloud is in mm, there is no distortion in the image, even if the X and Y resolution are different.  
However, the ZMap in pixels has a different ratio of X and Y resolution, which results in distortion of the ZMap image.

 ![ZMap in mm unit](https://discourse.vtk.org/uploads/default/original/2X/4/45d6663c4ccc90994c5d27fc3f26469012e7a693.png)

Is there any way to get an mm ZMap from the Point cloud using VTK?

Thank you 🙂

Best regards,  
William Kim