# Help in programming
**URL:** https://discourse.slicer.org/t/help-in-programming/20048
**Category:** Development
**Tags:** python
**Created:** [October 7, 2021, 9:12am UTC](https://discourse.slicer.org/t/help-in-programming/20048 "2021-10-07T09:12:19Z")
**Posts on this page:** 7
**Page:** 1
### Author:  [@Bence\_Horvath](https://discourse.slicer.org/u/Bence_Horvath)
#### Post date: [October 7, 2021, 9:12am UTC](https://discourse.slicer.org/t/help-in-programming/20048/1 "2021-10-07T09:12:19Z")
Hi,
I would like to get position of a fiducial markup and add it to a variables.
I try this way, but I get ‘none’ for result. There are exist a fiducial.
self.Incus = slicer.qMRMLNodeComboBox()
self.Incus.nodeTypes = [“vtkMRMLMarkupsFiducialNode”]
self.point = self.Incus.currentNode()
pos = [0.0, 0.0, 0.0]
print(self.point.GetNthFiducialPosition(0,pos))
result: None
when I printed only self.point it return all data of the fiducial
Best regards!
Bence
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### Author:  [@S\_Arbabi](https://discourse.slicer.org/u/S_Arbabi)
#### Post date: [October 7, 2021, 10:46am UTC](https://discourse.slicer.org/t/help-in-programming/20048/2 "2021-10-07T10:46:53Z")
you can access [a repository of codes](https://slicer.readthedocs.io/en/latest/developer_guide/script_repository.html) in here, there’s a line of code that can help you:
something like this: fidList.GetNthFiducialWorldCoordinates(0,world)
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### Author:  [@cpinter](https://discourse.slicer.org/u/cpinter)
#### Post date: [October 7, 2021, 1:06pm UTC](https://discourse.slicer.org/t/help-in-programming/20048/3 "2021-10-07T13:06:24Z")
Szia Bence,
Your print statement prints out the return value of the function. But GetNthFiducialPosition does not return anything, it puts the result in the argument array, in your case `pos`.
So if you do `print(pos)` after the GetNthFiducialPosition call, you’ll see the coordinates.
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### Author:  [@Bence\_Horvath](https://discourse.slicer.org/u/Bence_Horvath)
#### Post date: [October 11, 2021, 7:13am UTC](https://discourse.slicer.org/t/help-in-programming/20048/4 "2021-10-11T07:13:01Z")
Oooohh, thank you very very much!!! 😊
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### Author:  [@Bence\_Horvath](https://discourse.slicer.org/u/Bence_Horvath)
#### Post date: [October 11, 2021, 8:44am UTC](https://discourse.slicer.org/t/help-in-programming/20048/5 "2021-10-11T08:44:21Z")
And how can I get positions of LineMarkup’s control point?
GetControlPoints() doesn’t work with “vtkMRMLMarkupsLineNode” .
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### Author:  [@cpinter](https://discourse.slicer.org/u/cpinter)
#### Post date: [October 11, 2021, 11:53am UTC](https://discourse.slicer.org/t/help-in-programming/20048/6 "2021-10-11T11:53:39Z")
`GetControlPoints` is not a Python enabled function. You need to use `GetNthControlPointPosition`. I think it owuld be useful if you checked out the API. Then you’ll see what you can use. [Slicer: vtkMRMLMarkupsNode Class Reference](http://apidocs.slicer.org/master/classvtkMRMLMarkupsNode.html)
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### Author:  [@lassoan](https://discourse.slicer.org/u/lassoan)
#### Post date: [October 11, 2021, 2:32pm UTC](https://discourse.slicer.org/t/help-in-programming/20048/7 "2021-10-11T14:32:15Z")
The most convenient way for getting all the control positions in Python is the [slicer.util.arrayFromMarkupsControlPointData](https://slicer.readthedocs.io/en/latest/developer_guide/slicer.html#slicer.util.arrayFromMarkupsControlPointData) function.