# How Lut file changing

**URL:** <https://castor-project.discourse.group/t/how-lut-file-changing/239>\
**Category:** General Discussions\
**Created:** [November 18, 2021, 4:14pm UTC](https://castor-project.discourse.group/t/how-lut-file-changing/239 "2021-11-18T16:14:59Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Hamid\_Nezampour](https://avatars.discourse-cdn.com/v4/letter/h/bb73d2/32.png) [@Hamid\_Nezampour](https://castor-project.discourse.group/u/Hamid_Nezampour)\
**Post date:** [November 18, 2021, 4:14pm UTC](https://castor-project.discourse.group/t/how-lut-file-changing/239/1 "2021-11-18T16:14:59Z")

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Dear all,

We desigend a partial geomerty and we have the position and oreintation of crystalls, but we do not know how to change lut file?

Do we need a special app to change the lut file?

Has anyone here reconstructed the partial geometry with lut file?

I’ll be grateful if I receive your experience in this issue.

Hamid,