# Creating a line between already made mark up points
**URL:** https://discourse.slicer.org/t/creating-a-line-between-already-made-mark-up-points/19648
**Category:** Support
**Created:** [September 13, 2021, 7:01pm UTC](https://discourse.slicer.org/t/creating-a-line-between-already-made-mark-up-points/19648 "2021-09-13T19:01:34Z")
**Posts on this page:** 6
**Page:** 1
### Author:  [@mohammed\_alshakhas](https://discourse.slicer.org/u/mohammed_alshakhas)
#### Post date: [September 13, 2021, 7:01pm UTC](https://discourse.slicer.org/t/creating-a-line-between-already-made-mark-up-points/19648/1 "2021-09-13T19:01:34Z")
I’m trying to draw lines exactly where I placed some markup points
is there a way to define a line or plane according to already placed mark-up points?
thanks
---
### Author:  [@lassoan](https://discourse.slicer.org/u/lassoan)
#### Post date: [September 13, 2021, 7:08pm UTC](https://discourse.slicer.org/t/creating-a-line-between-already-made-mark-up-points/19648/2 "2021-09-13T19:08:50Z")
You can copy-paste markup control points from a markups fiducial list to a markups line in Markups module. Select the markups fiducial list, in Control points section select the two control points, hit Ctrl-C to copy them to the clipboard, select the markups line, and hit Ctrl-V to past the control points into the line).
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### Author:  [@ImreBarabas](https://discourse.slicer.org/u/ImreBarabas)
#### Post date: [October 26, 2023, 11:00pm UTC](https://discourse.slicer.org/t/creating-a-line-between-already-made-mark-up-points/19648/3 "2023-10-26T23:00:13Z")
Dear Andras!
Is it possible to make automatic? I mean I have two markup points and get a line between these two points, without Ctrl-C and Ctrl-V?
Thanks a lot,
Imre
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### Author:  [@muratmaga](https://discourse.slicer.org/u/muratmaga)
#### Post date: [October 27, 2023, 2:30am UTC](https://discourse.slicer.org/t/creating-a-line-between-already-made-mark-up-points/19648/4 "2023-10-27T02:30:09Z")
Thats like three clicks; one to create the empty line markups object, one to copy and one to paste.
Is it too complicated? You can probably do it by scripting it.
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### Author:  [@mikebind](https://discourse.slicer.org/u/mikebind)
#### Post date: [October 27, 2023, 6:37am UTC](https://discourse.slicer.org/t/creating-a-line-between-already-made-mark-up-points/19648/5 "2023-10-27T06:37:01Z")
Yes, this is easily scriptable. Here is an example function you could paste in the python interactor
```auto
def connectPoints(markupsNode1, markupsNode2):
'''Simple function which connects the first control
point of markupsNode1 to the first control point of
markupsNode2 with a line'''
pt1 = markupsNode1.GetNthControlPointPositionWorld(0)
pt2 = markupsNode2.GetNthControlPointPositionWorld(0)
newCurveNode = slicer.mrmlScene.AddNewNodeByClass('vtkMRMLMarkupsCurveNode')
newCurveNode.AddControlPoint(*pt1)
newCurveNode.AddControlPoint(*pt2)
return newCurveNode
```
Then you could use it like this:
```auto
connectingLineNode = connectPoints(getNode('myFirstPoint'), getNode('mySecondPoint'))
```
where you would need to replace ‘myFirstPoint’ and ‘mySecondPoint’ with the names of the markups which contain the two points you want to connect.
---
### Author:  [@ImreBarabas](https://discourse.slicer.org/u/ImreBarabas)
#### Post date: [October 27, 2023, 6:56am UTC](https://discourse.slicer.org/t/creating-a-line-between-already-made-mark-up-points/19648/6 "2023-10-27T06:56:18Z")
Dear Mike Bindschadler!
Thank you so much it works!
With best regards,
Imre