# Development

**URL:** https://discourse.slicer.org/c/dev/5.md?no_subcategories=false&page=105

[Latest](https://discourse.slicer.org/latest.md) · [Categories](https://discourse.slicer.org/categories.md) · [Tags](https://discourse.slicer.org/tags.md)

**Page:** 106

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## [Markups roadmap question](https://discourse.slicer.org/t/markups-roadmap-question/8006)

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**Author:** [@muratmaga](https://discourse.slicer.org/u/muratmaga)\
**Replies:** 3\
**Last updated:** [August 15, 2019, 5:18pm UTC](https://discourse.slicer.org/t/markups-roadmap-question/8006 "2019-08-15T17:18:07Z")

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On the Slicer5 roadmap link, I saw proposed changes to coordinate system for markups and models to be LPS. https://www.slicer.org/wiki/Documentation/Labs/Slicer5-roadmap#Coordinate\_system\_in\_files I am curious how this…

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## [Can I import PolyData of vtk with python](https://discourse.slicer.org/t/can-i-import-polydata-of-vtk-with-python/4114)

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**Author:** [@timeanddoctor](https://discourse.slicer.org/u/timeanddoctor)\
**Replies:** 8\
**Last updated:** [August 15, 2019, 3:16pm UTC](https://discourse.slicer.org/t/can-i-import-polydata-of-vtk-with-python/4114 "2019-08-15T15:16:56Z")

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Can I import this PolyDataFilter of vtk with python.

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## [LeftButtonClickEvent on Markups behavior](https://discourse.slicer.org/t/leftbuttonclickevent-on-markups-behavior/8008)

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**Author:** [@jamesobutler](https://discourse.slicer.org/u/jamesobutler)\
**Replies:** 2\
**Last updated:** [August 14, 2019, 11:25pm UTC](https://discourse.slicer.org/t/leftbuttonclickevent-on-markups-behavior/8008 "2019-08-14T23:25:23Z")

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In Slicer 4.11 nightly, the LeftButtonClickEvent on a markup fiducial results in the “Centered” Jump Slices behavior in the other slice viewers. This jumps the offsets and centers the fiducial in the center of all the ot…

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## [Transform inverse in transform chain](https://discourse.slicer.org/t/transform-inverse-in-transform-chain/8031)

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**Author:** [@adamrankin](https://discourse.slicer.org/u/adamrankin)\
**Replies:** 1\
**Last updated:** [August 14, 2019, 7:34pm UTC](https://discourse.slicer.org/t/transform-inverse-in-transform-chain/8031 "2019-08-14T19:34:14Z")

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Hello all, I am streaming transforms via IGTLink, so the transforms are changing in real-time. I am wondering if it’s possible to parent a transform by another transform, but inverted? Adam Edit: using the transform m…

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## [SlicerMorph extension missing in Windows preview version](https://discourse.slicer.org/t/slicermorph-extension-missing-in-windows-preview-version/7992)

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**Author:** [@smrolfe](https://discourse.slicer.org/u/smrolfe)\
**Replies:** 3\
**Last updated:** [August 13, 2019, 4:53pm UTC](https://discourse.slicer.org/t/slicermorph-extension-missing-in-windows-preview-version/7992 "2019-08-13T16:53:17Z")

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Hello, The SlicerMorph extension is not available in the Preview version of the Slicer for Windows. I checked CDash and the Linux and Mac builds show no errors but the Windows build is missing. The last successful Windo…

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## [Manually creating a multiVolume](https://discourse.slicer.org/t/manually-creating-a-multivolume/7918)

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**Author:** [@rbahegne](https://discourse.slicer.org/u/rbahegne)\
**Replies:** 8\
**Last updated:** [August 13, 2019, 3:43pm UTC](https://discourse.slicer.org/t/manually-creating-a-multivolume/7918 "2019-08-13T15:43:03Z")

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Hello world, I’m receiving dicom data from a websocket connection and i’m able to display it in a volume node. Thing is, now i’m receive dicom data from a temporal serie and i want to display it as a multiVolumeNode. I…

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## [Permanently hide MaskingGroupBox](https://discourse.slicer.org/t/permanently-hide-maskinggroupbox/7959)

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**Author:** [@EricM](https://discourse.slicer.org/u/EricM)\
**Replies:** 2\
**Last updated:** [August 13, 2019, 8:27am UTC](https://discourse.slicer.org/t/permanently-hide-maskinggroupbox/7959 "2019-08-13T08:27:24Z")

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Hello community, I am trying to simplify the segmentEditorWidget as much as possible. One feature I would like to do is hide the “MaskingGroupBox” in the “Paint” and “Draw” Effects. I have automatically set the “Modify …

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## [How to add a text-info into the View1 before I try to capture a video](https://discourse.slicer.org/t/how-to-add-a-text-info-into-the-view1-before-i-try-to-capture-a-video/7346)

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**Author:** [@aiden.zhu](https://discourse.slicer.org/u/aiden.zhu)\
**Replies:** 7\
**Last updated:** [August 12, 2019, 3:05pm UTC](https://discourse.slicer.org/t/how-to-add-a-text-info-into-the-view1-before-i-try-to-capture-a-video/7346 "2019-08-12T15:05:59Z")

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Operating system: Windows Slicer version: 4.11.0-2019-06-23 r28335 Expected behavior: text inside View1 Actual behavior: no idea @all Hi all, I am a new in Slicer community. I would like to add some text info into V…

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## [Texturize 3D model (ray tracing)](https://discourse.slicer.org/t/texturize-3d-model-ray-tracing/7340)

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**Author:** [@Michael\_Ef](https://discourse.slicer.org/u/Michael_Ef)\
**Replies:** 7\
**Last updated:** [August 10, 2019, 6:32pm UTC](https://discourse.slicer.org/t/texturize-3d-model-ray-tracing/7340 "2019-08-10T18:32:54Z")

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Hi there, I have created a 3D model from a stack of histological images. Now i would like to texturize/colorize this model by using the original rgb-images. Is there a way to project this “color” information on the mode…

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## [How to add/modify an icon of a module (ScriptedLoadableModule)?](https://discourse.slicer.org/t/how-to-add-modify-an-icon-of-a-module-scriptedloadablemodule/7967)

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**Author:** [@aiden.zhu](https://discourse.slicer.org/u/aiden.zhu)\
**Replies:** 2\
**Last updated:** [August 9, 2019, 5:42pm UTC](https://discourse.slicer.org/t/how-to-add-modify-an-icon-of-a-module-scriptedloadablemodule/7967 "2019-08-09T17:42:04Z")

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Hi all, I am trying to make a new module of ScriptedLoadableModule. The default icon is like this: Would you please give me some advice on this modification of module icons? Thanks in advance!

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## [Get IJK from Slice Offset after Rotate to Volume Plane](https://discourse.slicer.org/t/get-ijk-from-slice-offset-after-rotate-to-volume-plane/7920)

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**Author:** [@EricM](https://discourse.slicer.org/u/EricM)\
**Replies:** 2\
**Last updated:** [August 9, 2019, 11:01am UTC](https://discourse.slicer.org/t/get-ijk-from-slice-offset-after-rotate-to-volume-plane/7920 "2019-08-09T11:01:15Z")

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Hello Slicer Community, My ultimate goal is to create a button that copies a manual segmentation from the slice below/above and copies it into the current slice (presumably axial/Red SliceView). Note that due to the pro…

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## [Adding a new slice to a scene](https://discourse.slicer.org/t/adding-a-new-slice-to-a-scene/7928)

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**Author:** [@Neil\_Seller](https://discourse.slicer.org/u/Neil_Seller)\
**Replies:** 1\
**Last updated:** [August 7, 2019, 9:05pm UTC](https://discourse.slicer.org/t/adding-a-new-slice-to-a-scene/7928 "2019-08-07T21:05:44Z")

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How would one go ahead adding a new slice to a scene? I’ve tried: VLA = slicer.mrmlScene.AddNewNodeByClass(“vtkMRMLSliceNode”) but this crashes everytime. I want to do this in order to create alternative views of the…

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## [measure 3D object](https://discourse.slicer.org/t/measure-3d-object/7908)

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**Author:** [@ikram](https://discourse.slicer.org/u/ikram)\
**Replies:** 1\
**Last updated:** [August 7, 2019, 3:20am UTC](https://discourse.slicer.org/t/measure-3d-object/7908 "2019-08-07T03:20:30Z")

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hi i want to measure a 3D object of aneurysm , and get the height , width and volume of the coil of the aneurysm and the aneurysm bubble ! can anyone help me please :confused:

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## [Updated sample code for calling CLI via C++](https://discourse.slicer.org/t/updated-sample-code-for-calling-cli-via-c/7840)

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**Author:** [@rprueckl](https://discourse.slicer.org/u/rprueckl)\
**Replies:** 5\
**Last updated:** [August 6, 2019, 3:04pm UTC](https://discourse.slicer.org/t/updated-sample-code-for-calling-cli-via-c/7840 "2019-08-06T15:04:53Z")

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Hello, below is an updated example that shows how to call a CLI module from C++. I used the code from the link, but it seems to be quite old. So, i you want an update, please take my code (with any modification). https…

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## [Package imp deprecated](https://discourse.slicer.org/t/package-imp-deprecated/7797)

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**Author:** [@Alex\_Vergara](https://discourse.slicer.org/u/Alex_Vergara)\
**Replies:** 2\
**Last updated:** [August 6, 2019, 1:18pm UTC](https://discourse.slicer.org/t/package-imp-deprecated/7797 "2019-08-06T13:18:04Z")

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The package imp is deprecated in python since version 3.4 and will be removed. This is critical as the button reload of the modules strongly depends on this package. I didn’t succeed to replace it with the recommended im…

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## [ScriptedSegmentEditorEffect - reloading?](https://discourse.slicer.org/t/scriptedsegmenteditoreffect-reloading/7882)

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**Author:** [@hherhold](https://discourse.slicer.org/u/hherhold)\
**Replies:** 2\
**Last updated:** [August 5, 2019, 3:38pm UTC](https://discourse.slicer.org/t/scriptedsegmenteditoreffect-reloading/7882 "2019-08-05T15:38:31Z")

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I’m working on a new Segment Editor Effect, created using the wizard. When I modify some code and I want to test, clicking the “Reload” button seems to only reload the SegmentEditor module, not the new Editor Effect. Is …

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## [Observe modified segment](https://discourse.slicer.org/t/observe-modified-segment/7528)

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**Author:** [@EricM](https://discourse.slicer.org/u/EricM)\
**Replies:** 2\
**Last updated:** [August 5, 2019, 12:51pm UTC](https://discourse.slicer.org/t/observe-modified-segment/7528 "2019-08-05T12:51:38Z")

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Hello community, I am trying to add an observer to a segmentation node to keep track of any modifications to any segment (by modifications I mean manual changes to the contouring). The idea is to have a marker of any mo…

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## [Modify segment directly using Python](https://discourse.slicer.org/t/modify-segment-directly-using-python/7856)

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**Author:** [@hherhold](https://discourse.slicer.org/u/hherhold)\
**Replies:** 1\
**Last updated:** [August 3, 2019, 2:17am UTC](https://discourse.slicer.org/t/modify-segment-directly-using-python/7856 "2019-08-03T02:17:26Z")

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I’ve seen a lot of python scripts that use existing segment editor effects, but is there a way to directly access segment data and volume data from python to implement prototype segmentation algorithms? Or is that someth…

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## [Reverse search volume in sequence volume and get frame number](https://discourse.slicer.org/t/reverse-search-volume-in-sequence-volume-and-get-frame-number/7845)

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**Author:** [@che85](https://discourse.slicer.org/u/che85)\
**Replies:** 5\
**Last updated:** [August 2, 2019, 5:28pm UTC](https://discourse.slicer.org/t/reverse-search-volume-in-sequence-volume-and-get-frame-number/7845 "2019-08-02T17:28:00Z")

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Hi, I got an extracted frame (volume) from a sequence and I would not like to go back and figure out which frame it originally was. Is there a way to search a sequence for a given volume and extract the original frame n…

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## [Transferring models using glTF 2.0](https://discourse.slicer.org/t/transferring-models-using-gltf-2-0/7064)

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**Author:** [@jcfr](https://discourse.slicer.org/u/jcfr)\
**Replies:** 3\
**Last updated:** [August 1, 2019, 7:37pm UTC](https://discourse.slicer.org/t/transferring-models-using-gltf-2-0/7064 "2019-08-01T19:37:17Z")

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To follow up on an email from @pieper from 2017 Transferring models is still a work in progress, but lately I’m looking at glTF \[5\] as an interesting option. I would like to mention that VTK has an improved support f…

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## [Ophthalmic plugin](https://discourse.slicer.org/t/ophthalmic-plugin/7836)

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**Author:** [@pdeman](https://discourse.slicer.org/u/pdeman)\
**Replies:** 1\
**Last updated:** [August 1, 2019, 5:48pm UTC](https://discourse.slicer.org/t/ophthalmic-plugin/7836 "2019-08-01T17:48:21Z")

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Hi, is there any plugin for ophthalmic application ? like reading ophthalmic oct and fundus images (dicom etc …) and displaying them according to the ophthalmic convention ? if not I aw willing to help on that but don’…

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## [Changing the background of 3D view at startup](https://discourse.slicer.org/t/changing-the-background-of-3d-view-at-startup/7798)

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**Author:** [@rprueckl](https://discourse.slicer.org/u/rprueckl)\
**Replies:** 5\
**Last updated:** [July 30, 2019, 10:14pm UTC](https://discourse.slicer.org/t/changing-the-background-of-3d-view-at-startup/7798 "2019-07-30T22:14:48Z")

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Hi, i have a class derived from qSlicerMainWindow (according to https://github.com/KitwareMedical/SlicerCustomAppTemplate). In the method setupUi, after the line this-\>Superclass::setupUi(mainWindow); I am setting a cu…

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## [Calculate angular displacement of rotated DICOM data](https://discourse.slicer.org/t/calculate-angular-displacement-of-rotated-dicom-data/7794)

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**Author:** [@Manuel](https://discourse.slicer.org/u/Manuel)\
**Replies:** 2\
**Last updated:** [July 29, 2019, 6:57pm UTC](https://discourse.slicer.org/t/calculate-angular-displacement-of-rotated-dicom-data/7794 "2019-07-29T18:57:39Z")

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Hey there, I would need to know the procedure (mathematical calculations) how to calculate the angular displacement (axis x, y and z) of rotated DICOM data. I already know that it is possible to access the image axis di…

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## [Can I calculate the narrowest area slice automatic for an artery from CTA](https://discourse.slicer.org/t/can-i-calculate-the-narrowest-area-slice-automatic-for-an-artery-from-cta/7796)

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**Author:** [@timeanddoctor](https://discourse.slicer.org/u/timeanddoctor)\
**Replies:** 1\
**Last updated:** [July 29, 2019, 1:03pm UTC](https://discourse.slicer.org/t/can-i-calculate-the-narrowest-area-slice-automatic-for-an-artery-from-cta/7796 "2019-07-29T13:03:19Z")

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Can I calculate the narrowest slice automatic for an artery from CTA?

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## [3D slicer Windows 10 Build Fail (only SimpleITK project)](https://discourse.slicer.org/t/3d-slicer-windows-10-build-fail-only-simpleitk-project/6727)

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**Author:** [@hwanid](https://discourse.slicer.org/u/hwanid)\
**Replies:** 34\
**Last updated:** [July 29, 2019, 3:19am UTC](https://discourse.slicer.org/t/3d-slicer-windows-10-build-fail-only-simpleitk-project/6727 "2019-07-29T03:19:55Z")

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Hello, I’m trying to build 3D slicer with 2019-4-30 files but, Every project is success except “SimpleITK” project Is there any way to fix this? Error LNK1112 ‘x86’ \[C:\\Slicer-master-bin\\SimpleITK-build\\Lua-prefix\\sr…

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## [Build failure windows](https://discourse.slicer.org/t/build-failure-windows/7322)

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**Author:** [@gregsharp.geo](https://discourse.slicer.org/u/gregsharp.geo)\
**Replies:** 36\
**Last updated:** [July 28, 2019, 9:26pm UTC](https://discourse.slicer.org/t/build-failure-windows/7322 "2019-07-28T21:26:31Z")

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Hi, I get VTK build failure on VS 2017. Error LNK1181 cannot open input file 'C:\\S\\tbb-install\\lib\\intel64\\tbb.lib' \[C:\\S\\VTK-build\\vtkCommon.vcxproj\] VTK C:\\S\\LINK 1 Error LNK1181 cannot open input file 'C:\\S\\VTK-bui…

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## [Clear Python Interactor pogrammatically](https://discourse.slicer.org/t/clear-python-interactor-pogrammatically/7773)

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**Author:** [@Manuel](https://discourse.slicer.org/u/Manuel)\
**Replies:** 4\
**Last updated:** [July 26, 2019, 7:27pm UTC](https://discourse.slicer.org/t/clear-python-interactor-pogrammatically/7773 "2019-07-26T19:27:38Z")

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Is there any posibility to clear the Python Interactor pogrammatically within a loable module? Thanks in advanced. Manuel

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## [Volume module crash when call from a build with a loadable module](https://discourse.slicer.org/t/volume-module-crash-when-call-from-a-build-with-a-loadable-module/7750)

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**Author:** [@rbahegne](https://discourse.slicer.org/u/rbahegne)\
**Replies:** 3\
**Last updated:** [July 26, 2019, 1:04pm UTC](https://discourse.slicer.org/t/volume-module-crash-when-call-from-a-build-with-a-loadable-module/7750 "2019-07-26T13:04:29Z")

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Hello, if I build (debug) a loadable module even empty (freshly created from the extension wizard) and run slicer, when i click on volumes extension i got a crash with this assert : Switch to module: “Volumes” ASSERT:…

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## [Entry and exit events from MRML slice views](https://discourse.slicer.org/t/entry-and-exit-events-from-mrml-slice-views/1060)

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**Author:** [@mschumaker](https://discourse.slicer.org/u/mschumaker)\
**Replies:** 4\
**Last updated:** [July 26, 2019, 12:33pm UTC](https://discourse.slicer.org/t/entry-and-exit-events-from-mrml-slice-views/1060 "2019-07-26T12:33:13Z")

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I’m hoping to perform actions in my scripted module when the user’s mouse enters or exits the Red and Yellow MRML slice views. I know this involves observing events, but I’m not sure what event to observe, and where to u…

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## [SlicerOpenIGTLink causing CustomApp build to fail](https://discourse.slicer.org/t/sliceropenigtlink-causing-customapp-build-to-fail/7758)

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**Author:** [@jamesobutler](https://discourse.slicer.org/u/jamesobutler)\
**Replies:** 4\
**Last updated:** [July 25, 2019, 9:25pm UTC](https://discourse.slicer.org/t/sliceropenigtlink-causing-customapp-build-to-fail/7758 "2019-07-25T21:25:18Z")

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I’m trying to get a custom app to build with the SlicerOpenIGTLink remote extension included. However, I keep running into this CMake Error as seen below. If I comment out the SlicerOpenIGTLink specification in my custom…

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