# RangeMin and RangeMax of points coordinates

**URL:** https://discourse.vtk.org/t/rangemin-and-rangemax-of-points-coordinates/1176
**Category:** Support
**Tags:** file-formats
**Created:** [June 19, 2019, 2:18pm UTC](https://discourse.vtk.org/t/rangemin-and-rangemax-of-points-coordinates/1176 "2019-06-19T14:18:30Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![Tho](https://discourse.vtk.org/letter_avatar_proxy/v4/letter/t/9de053/32.png) [@Tho](https://discourse.vtk.org/u/Tho)
#### Post date: [June 19, 2019, 2:18pm UTC](https://discourse.vtk.org/t/rangemin-and-rangemax-of-points-coordinates/1176/1 "2019-06-19T14:18:30Z")

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Hi,

I have to create a “.vtp” file (xml file for polydata object) from a model of simulation. I have found some examples on the internet to understand the construction of this kind of file. However, I don’t understand “RangeMin” and “RangeMax” of the . It seems that they are not minimal and maximal values of coordinates of points ? Can you tell me what they are - the values of “RangeMin” and “RangeMax” of the ?  
Thank you very much.