# Adding fiducial marks and determining RAS coordinates

**URL:** <https://discourse.slicer.org/t/adding-fiducial-marks-and-determining-ras-coordinates/13421>\
**Category:** Development\
**Created:** [September 10, 2020, 12:58pm UTC](https://discourse.slicer.org/t/adding-fiducial-marks-and-determining-ras-coordinates/13421 "2020-09-10T12:58:54Z")\
**Posts on this page:** 1\
**Showing post:** 9

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**Author:** ![jamesobutler](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/jamesobutler/32/7511_2.png) [@jamesobutler](https://discourse.slicer.org/u/jamesobutler)\
**Post date:** [September 14, 2020, 5:43pm UTC](https://discourse.slicer.org/t/adding-fiducial-marks-and-determining-ras-coordinates/13421/9 "2020-09-14T17:43:39Z")

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I think what you are wanting is exactly what the qSlicerSimpleMarkupsWidget provides.

```python
simple_markups = slicer.qSlicerSimpleMarkupsWidget()
simple_markups.setMRMLScene(slicer.mrmlScene)

```

![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/7/7/77c9a636a6663879e8bdad26ab29e72300129db0.png)

Or the Markups module

 ![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/d/a/da1183e2cce09b778ed913538524d5afd2e47e6b.png)

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