# Inserting control vertex at exact coordinates

**URL:** https://forum.highend3d.com/t/inserting-control-vertex-at-exact-coordinates/48545
**Category:** Maya
**Tags:** python
**Created:** [May 7, 2015, 11:05am UTC](https://forum.highend3d.com/t/inserting-control-vertex-at-exact-coordinates/48545 "2015-05-07T11:05:08Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![space9](https://forum.highend3d.com/letter_avatar_proxy/v4/letter/s/8e8cbc/32.png) [@space9](https://forum.highend3d.com/u/space9)
#### Post date: [May 7, 2015, 11:05am UTC](https://forum.highend3d.com/t/inserting-control-vertex-at-exact-coordinates/48545/1 "2015-05-07T11:05:09Z")

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Hello,

I'm writing a script in python and I would like to be able to add a control vertex to a 3rd degree cv curve at a specified (x,y,z) location between two existing cv's.

Is there a way to do this?

The closest thing I can think of is use insertKnotCurve and move the new point to the coordinates afterwards, but for that I would need to know the value of the u parameter between those two points and I dont know how to get that info.&nbsp;