# Given plane center and normal, How to calculate baseToNode

**URL:** <https://discourse.slicer.org/t/given-plane-center-and-normal-how-to-calculate-basetonode/34055>\
**Category:** Support\
**Tags:** python\
**Created:** [January 31, 2024, 7:55am UTC](https://discourse.slicer.org/t/given-plane-center-and-normal-how-to-calculate-basetonode/34055 "2024-01-31T07:55:03Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![angolin22\_fan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/angolin22_fan/32/67798_2.png) [@angolin22\_fan](https://discourse.slicer.org/u/angolin22_fan)\
**Post date:** [January 31, 2024, 7:55am UTC](https://discourse.slicer.org/t/given-plane-center-and-normal-how-to-calculate-basetonode/34055/1 "2024-01-31T07:55:03Z")

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Dear teacher,  
Hello, Thanks for your excellent work!  
I have a question, If I know the plane center(c1,c2,c3) and normal(n1,n2,n3), How can I calculate the ‘baseToNode’?