# Input limits for transform display

**URL:** <https://discourse.slicer.org/t/input-limits-for-transform-display/2603>\
**Category:** Support\
**Tags:** registration, transforms\
**Created:** [April 17, 2018, 12:46am UTC](https://discourse.slicer.org/t/input-limits-for-transform-display/2603 "2018-04-17T00:46:04Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![david-hoffman](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/david-hoffman/32/1480_2.png) [@david-hoffman](https://discourse.slicer.org/u/david-hoffman)\
**Post date:** [April 17, 2018, 12:46am UTC](https://discourse.slicer.org/t/input-limits-for-transform-display/2603/1 "2018-04-17T00:46:04Z")

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Operating system: Windows 10 Pro 1709 build 16299.309  
Slicer version: 4.8.1  
Expected behavior: Any numerical input allowed  
Actual behavior: input limited to numbers greater than 0.01

I have transform files that are output by ANTs ([https://github.com/ANTsX/ANTs](https://github.com/ANTsX/ANTs)) and associated image data. However the voxel sizes are 0.024 or smaller and I’d like to be able to visualize the deformation field but I’m limited in how small I can make the spacing, how large I can make the scale factor, etc.

Is there some way to override these safeguards?

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<div class="post-metadata">

**Author:** ![lassoan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lassoan/32/13_2.png) [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Post date:** [April 17, 2018, 2:16am UTC](https://discourse.slicer.org/t/input-limits-for-transform-display/2603/2 "2018-04-17T02:16:37Z")

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You can set the values using the Python console, for example:

```
getNode('LinearTransform_3').GetDisplayNode().SetGlyphSpacingMm(0.01)

```

I’ll have a look how the range could be made more customizable using the GUI.