# Python code to place fiducial markers into slicer
**URL:** https://discourse.slicer.org/t/python-code-to-place-fiducial-markers-into-slicer/24317
**Category:** Support
**Tags:** python
**Created:** [July 14, 2022, 3:51pm UTC](https://discourse.slicer.org/t/python-code-to-place-fiducial-markers-into-slicer/24317 "2022-07-14T15:51:24Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@mxtt](https://discourse.slicer.org/u/mxtt)
#### Post date: [July 14, 2022, 3:51pm UTC](https://discourse.slicer.org/t/python-code-to-place-fiducial-markers-into-slicer/24317/1 "2022-07-14T15:51:24Z")
I am trying to place fiducial markers down, but not with the widget or GUI. I am wondering how I can do this in my python code. I have a text file with a list of coordinates, and I want to place the markers at those coordinates. Any help would be appreciated. Thanks.
---
### Author:  [@mangotee](https://discourse.slicer.org/u/mangotee)
#### Post date: [July 14, 2022, 4:17pm UTC](https://discourse.slicer.org/t/python-code-to-place-fiducial-markers-into-slicer/24317/2 "2022-07-14T16:17:02Z")
Here’s one way to do it: Read your text file into a Nx3 numpy array (here: `arr`), then create or get the desired fiducial node (here: `nfids`, class: `slicer.vtkMRMLMarkupsFiducialNode`). With these two, you can use the following function to place fiducials into that node (with or without names):
```python
def fiducialListFromArray(nfids, arr, listFidNames=None):
nrfids = arr.shape[0]
if listFidNames is None:
listFidNames = ['%s-%d'%(nfids.GetName(),i+1) for i in range(nrfids)]
for i in range(nrfids):
nfids.AddFiducial(arr[i,0], arr[i,1], arr[i,2], listFidNames[i])
return nfids
```
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### Author:  [@mxtt](https://discourse.slicer.org/u/mxtt)
#### Post date: [July 14, 2022, 4:28pm UTC](https://discourse.slicer.org/t/python-code-to-place-fiducial-markers-into-slicer/24317/3 "2022-07-14T16:28:15Z")
```python
slicer.modules.markups.logic().AddFiducial(x, y, z)
```
I think this will work right?
---
### Author:  [@jcfr](https://discourse.slicer.org/u/jcfr)
#### Post date: [July 15, 2022, 4:49pm UTC](https://discourse.slicer.org/t/python-code-to-place-fiducial-markers-into-slicer/24317/4 "2022-07-15T16:49:18Z")
@mxtt Reading the `Markups` section of the “Script Repository” should help you move forward:
[https://slicer.readthedocs.io/en/latest/developer\_guide/script\_repository.html#markups](https://slicer.readthedocs.io/en/latest/developer_guide/script_repository.html#markups)
> place fiducial markers down, but not with the widget or GUI. […] do this in my python code
More specifically, the entry [Adding control points Programmatically](https://slicer.readthedocs.io/en/latest/developer_guide/script_repository.html#adding-control-points-programmatically)