# How can i make landmarks evenly distributed in the mandible?

**URL:** <https://discourse.slicer.org/t/how-can-i-make-landmarks-evenly-distributed-in-the-mandible/37109>\
**Category:** Support\
**Created:** [June 30, 2024, 3:16pm UTC](https://discourse.slicer.org/t/how-can-i-make-landmarks-evenly-distributed-in-the-mandible/37109 "2024-06-30T15:16:09Z")\
**Posts on this page:** 7\
**Page:** 1

<div class="post-metadata">

**Author:** ![yijie3091](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/yijie3091/32/80324_2.png) [@yijie3091](https://discourse.slicer.org/u/yijie3091)\
**Post date:** [June 30, 2024, 3:16pm UTC](https://discourse.slicer.org/t/how-can-i-make-landmarks-evenly-distributed-in-the-mandible/37109/1 "2024-06-30T15:16:09Z")

</div>

Operating system:win11  
Slicer version:5.6.2  
Expected behavior:i want to use the “PseudoLandmarks” where i use "Original Geometry"to make the landmarks evenly distributed in the mandible.  
Actual behavior:it has some blank regions in the right jaw,and the left has a relatively better result than the left.

 ![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/9/2/9205e9d15871caf844342327a0f5a638df544be4.png)  
 ![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/f/7/f76200c1a602c59af48eeb72a2387579f611fbc4.png)

---

<div class="post-metadata">

**Author:** ![muratmaga](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/muratmaga/32/3622_2.png) [@muratmaga](https://discourse.slicer.org/u/muratmaga)\
**Post date:** [June 30, 2024, 5:11pm UTC](https://discourse.slicer.org/t/how-can-i-make-landmarks-evenly-distributed-in-the-mandible/37109/2 "2024-06-30T17:11:11Z")

</div>

Are you using a plane? If you are not trying to make symmetrical template (with landmarks designated as left and right), I wouldn’t use a plane.

There are a few things to consider. If you are using “Model Geometry” make sure your model’s triangulation is fairly uniform (you can check that by enabling the surface with edges option in Models module for visualization). If they are not, try using the Surface Toolbox, Uniform Remesh option and run it something like 50K option.

Finally, make the Maximum project factor small, and then if points are not ending on the surface, incrementally increase that.

---

<div class="post-metadata">

**Author:** ![yijie3091](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/yijie3091/32/80324_2.png) [@yijie3091](https://discourse.slicer.org/u/yijie3091)\
**Post date:** [August 31, 2024, 5:37pm UTC](https://discourse.slicer.org/t/how-can-i-make-landmarks-evenly-distributed-in-the-mandible/37109/3 "2024-08-31T17:37:38Z")

</div>

we all know that pseudo-landmarks are semi-landmarks,so when i perform geometric  
morphological analysis,it is necessary to have landmarks.thus,i have a problem “how can i make landmarks and semi-landmarks exist at the same time.”  
the red are landmarks manually,green are pseudo-landmarks.

 ![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/6/1/611154fd08ec76be9471207b693d4230577e935b.png)

 ![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/7/a/7a054a9380774845061e6763c6e539fc4095f8c8.png)

---

<div class="post-metadata">

**Author:** ![muratmaga](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/muratmaga/32/3622_2.png) [@muratmaga](https://discourse.slicer.org/u/muratmaga)\
**Post date:** [August 31, 2024, 9:38pm UTC](https://discourse.slicer.org/t/how-can-i-make-landmarks-evenly-distributed-in-the-mandible/37109/4 "2024-08-31T21:38:59Z")

</div>

Not sure what you are asking? You clearly got both semi and anatomical landmarks together.

If you are asking how to save them in a single json file, you can use the MergeMarkups module to save them into a single file.

---

<div class="post-metadata">

**Author:** ![yijie3091](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/yijie3091/32/80324_2.png) [@yijie3091](https://discourse.slicer.org/u/yijie3091)\
**Post date:** [September 1, 2024, 3:37pm UTC](https://discourse.slicer.org/t/how-can-i-make-landmarks-evenly-distributed-in-the-mandible/37109/5 "2024-09-01T15:37:57Z")

</div>

yes,thank you very much,what you say solves my problem;and i have other questions which really need your help;one is that how to make a "mandible template"from many mandibles in slicermorph ;and the other is how to segment crestal area precisely apart from mandible.

---

<div class="post-metadata">

**Author:** ![muratmaga](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/muratmaga/32/3622_2.png) [@muratmaga](https://discourse.slicer.org/u/muratmaga)\
**Post date:** [September 2, 2024, 5:54am UTC](https://discourse.slicer.org/t/how-can-i-make-landmarks-evenly-distributed-in-the-mandible/37109/6 "2024-09-02T05:54:28Z")

</div>

Since your original question is answered, please post separate questions for these two. That allows finding answers easier on the forum.

---

<div class="post-metadata">

**Author:** ![yijie3091](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/yijie3091/32/80324_2.png) [@yijie3091](https://discourse.slicer.org/u/yijie3091)\
**Post date:** [September 4, 2024, 7:56am UTC](https://discourse.slicer.org/t/how-can-i-make-landmarks-evenly-distributed-in-the-mandible/37109/7 "2024-09-04T07:56:42Z")

</div>

OK,thank you very much!