# Question about spharm-pdm module in 3DSlicer

**URL:** <https://discourse.slicer.org/t/question-about-spharm-pdm-module-in-3dslicer/10686>\
**Category:** Support\
**Created:** [March 14, 2020, 3:50pm UTC](https://discourse.slicer.org/t/question-about-spharm-pdm-module-in-3dslicer/10686 "2020-03-14T15:50:29Z")\
**Posts on this page:** 9\
**Page:** 1

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**Author:** ![pecca](https://avatars.discourse-cdn.com/v4/letter/p/cab0a1/32.png) [@pecca](https://discourse.slicer.org/u/pecca)\
**Post date:** [March 14, 2020, 3:50pm UTC](https://discourse.slicer.org/t/question-about-spharm-pdm-module-in-3dslicer/10686/1 "2020-03-14T15:50:29Z")

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Operating system:win10  
Slicer version:3dslicer 4.8.0  
i want to use SPHARM-PDM to analysis nii format data,when i run ShapeAnalysisMoudle it shows error in step 0:SegPostProcessStatus:compeleted with errors.Detials say that “No input data assigned to “Input Image”” ,how can i solve it?thx to tell  
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**Author:** ![pecca](https://avatars.discourse-cdn.com/v4/letter/p/cab0a1/32.png) [@pecca](https://discourse.slicer.org/u/pecca)\
**Post date:** [March 14, 2020, 3:50pm UTC](https://discourse.slicer.org/t/question-about-spharm-pdm-module-in-3dslicer/10686/2 "2020-03-14T15:50:34Z")

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when i use spharm-pdm moudle to analysis nii format data,run ShapeAnalysisMoudle shows error like this ![Q2](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/e/b/ebeb3c3798854de8e1ea200ad46d3f4a2ba1f52f.png)  
detials shows this ![Q22](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/8/2/82f4e120a6d552005ecc72b528665200f1ca0bb7.png) saying that no input data assigned to “Input Image”  
how can i solve it?  
thx for tell

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**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:** [March 18, 2020, 3:19am UTC](https://discourse.slicer.org/t/question-about-spharm-pdm-module-in-3dslicer/10686/3 "2020-03-18T03:19:57Z")

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Selecting an input image should fix the issue.

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**Author:** ![pecca](https://avatars.discourse-cdn.com/v4/letter/p/cab0a1/32.png) [@pecca](https://discourse.slicer.org/u/pecca)\
**Post date:** [March 18, 2020, 4:03am UTC](https://discourse.slicer.org/t/question-about-spharm-pdm-module-in-3dslicer/10686/4 "2020-03-18T04:03:45Z")

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But I have choose the right path,slicer just can’t read the data file.  
Here is my data path ![dataloc](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/d/0/d0f0d995597dd8c3f7f7d235ae5fa6027463b1f5.png)  
And here is slicer input ![path](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/8/5/85676ddd755bf75d92f1fbc2e7b6c210cc6b899f.png)

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**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:** [March 18, 2020, 4:11am UTC](https://discourse.slicer.org/t/question-about-spharm-pdm-module-in-3dslicer/10686/5 "2020-03-18T04:11:54Z")

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Have you tried to follow the exact steps described in [SlicerSALT tutorials](http://salt.slicer.org/documentation/)?

@bpaniagua do you have any specific suggestion?

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**Author:** ![pecca](https://avatars.discourse-cdn.com/v4/letter/p/cab0a1/32.png) [@pecca](https://discourse.slicer.org/u/pecca)\
**Post date:** [March 18, 2020, 4:52am UTC](https://discourse.slicer.org/t/question-about-spharm-pdm-module-in-3dslicer/10686/6 "2020-03-18T04:52:03Z")

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Yes,i follow the tutorials step by step but always shows the same question.  
Does slicer need other software installed like QT or VTK?

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**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:** [March 18, 2020, 4:56am UTC](https://discourse.slicer.org/t/question-about-spharm-pdm-module-in-3dslicer/10686/7 "2020-03-18T04:56:47Z")

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Slicer and required extensions are all you need. SlicerSALT has all the required extensions bundled.

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**Author:** ![pecca](https://avatars.discourse-cdn.com/v4/letter/p/cab0a1/32.png) [@pecca](https://discourse.slicer.org/u/pecca)\
**Post date:** [March 18, 2020, 10:34am UTC](https://discourse.slicer.org/t/question-about-spharm-pdm-module-in-3dslicer/10686/8 "2020-03-18T10:34:02Z")

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thank you very much!However,another question appears when i use SAPHARM-PDM in slicesault(version2.2.1),first step output nrrd format data which expected to be nii format data, ![2](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/2/1/21124f70d139bddc99d2d9837a89859fbdfade95.png)  
How can i solve it?

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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:** [March 18, 2020, 1:19pm UTC](https://discourse.slicer.org/t/question-about-spharm-pdm-module-in-3dslicer/10686/9 "2020-03-18T13:19:29Z")

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Nifti (.nii) and NRRD file formats should work equally well. If you suspect that spharm expects one or the other then you can convert your images by loading them into Slicer and saving them - choosing the preferred format in “File format” column.