# Blank lines after ACPC transform

**URL:** <https://discourse.slicer.org/t/blank-lines-after-acpc-transform/19040>\
**Category:** Support\
**Tags:** segmentation, transforms\
**Created:** [August 3, 2021, 1:46pm UTC](https://discourse.slicer.org/t/blank-lines-after-acpc-transform/19040 "2021-08-03T13:46:45Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![YingHsu](https://avatars.discourse-cdn.com/v4/letter/y/47e85d/32.png) [@YingHsu](https://discourse.slicer.org/u/YingHsu)\
**Post date:** [August 3, 2021, 1:46pm UTC](https://discourse.slicer.org/t/blank-lines-after-acpc-transform/19040/1 "2021-08-03T13:46:45Z")

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Dear experts:  
When I use segment editor, I often encountered some blank lines when I tried to paint on sagittal view after doing ACPC transform. And there are patches appear in adjacent slices.

Can you give me some advice. Thank you in advance.

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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:** [August 3, 2021, 1:49pm UTC](https://discourse.slicer.org/t/blank-lines-after-acpc-transform/19040/2 "2021-08-03T13:49:38Z")

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This is the expected behavior when the orientation of the slice view differs from the orientation of the segmentation’s labelmap representation. See more information [here](https://slicer.readthedocs.io/en/latest/user_guide/modules/segmenteditor.html#paint-affects-neighbor-slices-or-stripes-appear-in-painted-segments).