# Development

**URL:** https://discourse.slicer.org/c/dev/5.md?no_subcategories=false&page=29

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

**Page:** 30

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## [Is the dicom database can manager file like .nrrd or .nii?](https://discourse.slicer.org/t/is-the-dicom-database-can-manager-file-like-nrrd-or-nii/32148)

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**Author:** [@icedream](https://discourse.slicer.org/u/icedream)\
**Replies:** 2\
**Last updated:** [October 11, 2023, 6:38pm UTC](https://discourse.slicer.org/t/is-the-dicom-database-can-manager-file-like-nrrd-or-nii/32148 "2023-10-11T18:38:58Z")

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i can use dicom database to manager my dicom data , is it possible to use dicom database to manager single file like nrrd or nii file?

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## [Unable to create LabelMaps for ModelMaker](https://discourse.slicer.org/t/unable-to-create-labelmaps-for-modelmaker/32163)

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**Author:** [@BlancaRodriguez](https://discourse.slicer.org/u/BlancaRodriguez)\
**Replies:** 1\
**Last updated:** [October 11, 2023, 5:56pm UTC](https://discourse.slicer.org/t/unable-to-create-labelmaps-for-modelmaker/32163 "2023-10-11T17:56:46Z")

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Hello! My team and I are currently working in a segmentation project, and have been actively using Slicer. However, we are currently facing some challenges and hope we can get some help from the community. Specifically…

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## [Segmentation of the growth plate ](https://discourse.slicer.org/t/segmentation-of-the-growth-plate/32140)

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**Author:** [@Smart](https://discourse.slicer.org/u/Smart)\
**Replies:** 0\
**Last updated:** [October 10, 2023, 8:26pm UTC](https://discourse.slicer.org/t/segmentation-of-the-growth-plate/32140 "2023-10-10T20:26:11Z")

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So I wanna segment the growth plate with Slicer using python The question is can I have slices of the images in the G view and changing the images with Python and I import it again with ImageStacks to do the segmentatio…

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## [Editor for .py files is now configurable](https://discourse.slicer.org/t/editor-for-py-files-is-now-configurable/30563)

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**Author:** [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Replies:** 4\
**Last updated:** [October 10, 2023, 8:24pm UTC](https://discourse.slicer.org/t/editor-for-py-files-is-now-configurable/30563 "2023-10-10T20:24:35Z")

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Until recently, when a developer clicked the Edit button in the module’s Reload & Test section, Slicer opened the Python file of the module using the program associated with Python files in the operating system settings. …

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## [How to clear segmentation?](https://discourse.slicer.org/t/how-to-clear-segmentation/7433)

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**Author:** [@ungi](https://discourse.slicer.org/u/ungi)\
**Replies:** 20\
**Last updated:** [October 10, 2023, 9:28am UTC](https://discourse.slicer.org/t/how-to-clear-segmentation/7433 "2023-10-10T09:28:27Z")

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Hi, is there an easy way to clear a segmentation from Python? (Or from the widget, by the way.) I’m now doing this in a module that automatically clears a segmentation after saving it. But this looks like a hack rather t…

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## [Does anyone know how to extract human skin?(about skin.py)](https://discourse.slicer.org/t/does-anyone-know-how-to-extract-human-skin-about-skin-py/22262)

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**Author:** [@zhuyingxinxs](https://discourse.slicer.org/u/zhuyingxinxs)\
**Replies:** 2\
**Last updated:** [October 9, 2023, 11:09pm UTC](https://discourse.slicer.org/t/does-anyone-know-how-to-extract-human-skin-about-skin-py/22262 "2023-10-09T23:09:58Z")

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I found the code for extracting skin in the following url,But how do I import my own DICOM data instead of using the MRHEAD example?

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## [Different Slicer versions (download date) for same offset](https://discourse.slicer.org/t/different-slicer-versions-download-date-for-same-offset/32124)

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**Author:** [@mau\_igna\_06](https://discourse.slicer.org/u/mau_igna_06)\
**Replies:** 0\
**Last updated:** [October 9, 2023, 6:44pm UTC](https://discourse.slicer.org/t/different-slicer-versions-download-date-for-same-offset/32124 "2023-10-09T18:44:33Z")

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All Slicer versions (preview and stable) for the different OSs have different upload date (see picture below). Is this a bug on the server?

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## [Install extension module in built Slicer](https://discourse.slicer.org/t/install-extension-module-in-built-slicer/32032)

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**Author:** [@park](https://discourse.slicer.org/u/park)\
**Replies:** 10\
**Last updated:** [October 7, 2023, 2:53am UTC](https://discourse.slicer.org/t/install-extension-module-in-built-slicer/32032 "2023-10-07T02:53:58Z")

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Hi all I’m having trouble installing an extension module in the built Slicer. Here is my situation: Slicer build was successful. I separately built the source code of the extension module from a Git repository, fo…

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## [MONAILabel module should allow user to select different volumes in current scene](https://discourse.slicer.org/t/monailabel-module-should-allow-user-to-select-different-volumes-in-current-scene/28522)

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**Author:** [@slicer365](https://discourse.slicer.org/u/slicer365)\
**Replies:** 25\
**Last updated:** [October 6, 2023, 10:26pm UTC](https://discourse.slicer.org/t/monailabel-module-should-allow-user-to-select-different-volumes-in-current-scene/28522 "2023-10-06T22:26:35Z")

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this selector bar is gray.

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## [Dynamic 3D Object Manipulation for surgery simulation](https://discourse.slicer.org/t/dynamic-3d-object-manipulation-for-surgery-simulation/22508)

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**Author:** [@Eserval](https://discourse.slicer.org/u/Eserval)\
**Replies:** 1\
**Last updated:** [March 15, 2022, 3:31am UTC](https://discourse.slicer.org/t/dynamic-3d-object-manipulation-for-surgery-simulation/22508 "2022-03-15T03:31:25Z")

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Hello everyone, Does anyone have experience with the manipulation of 3D objects? After I made my 3D model I’.m looking for a way to manipulate it, for example, retracting the lung parenchyma to expose the vessels. The…

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## [How to resample curve nodes programmatically?](https://discourse.slicer.org/t/how-to-resample-curve-nodes-programmatically/16395)

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**Author:** [@akshay\_pillai](https://discourse.slicer.org/u/akshay_pillai)\
**Replies:** 12\
**Last updated:** [October 6, 2023, 8:45am UTC](https://discourse.slicer.org/t/how-to-resample-curve-nodes-programmatically/16395 "2023-10-06T08:45:40Z")

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Operating system: windows 10 Slicer version:4.11 Expected behavior: Actual behavior: I just need to automatically resample a centerline curve to 20 control points from more than 100, similar to the resample section i…

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## [What is the algorithm applied to curve setting option?](https://discourse.slicer.org/t/what-is-the-algorithm-applied-to-curve-setting-option/31958)

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**Author:** [@dsa934](https://discourse.slicer.org/u/dsa934)\
**Replies:** 1\
**Last updated:** [September 29, 2023, 2:58pm UTC](https://discourse.slicer.org/t/what-is-the-algorithm-applied-to-curve-setting-option/31958 "2023-09-29T14:58:52Z")

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Hi, slicer users, Where can I find the implementation part of the above function on github? I’m trying to create a function where the fiducialNode has a ‘maximum projection distance’ of 1% for the constrain model (so…

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## [Rotate slice view up interactively](https://discourse.slicer.org/t/rotate-slice-view-up-interactively/31940)

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**Author:** [@mikebind](https://discourse.slicer.org/u/mikebind)\
**Replies:** 5\
**Last updated:** [September 28, 2023, 11:37am UTC](https://discourse.slicer.org/t/rotate-slice-view-up-interactively/31940 "2023-09-28T11:37:40Z")

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I would like to allow a user to interactively rotate the slice view up direction, similar to how the Ctrl-Alt-Left Drag shortcut allows rotation of lined slice planes, but in this case rotating only the clicked-on slice …

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## [Transform using translation-rotation bars vs 3D view interaction](https://discourse.slicer.org/t/transform-using-translation-rotation-bars-vs-3d-view-interaction/31860)

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**Author:** [@Mehran](https://discourse.slicer.org/u/Mehran)\
**Replies:** 1\
**Last updated:** [September 28, 2023, 8:43am UTC](https://discourse.slicer.org/t/transform-using-translation-rotation-bars-vs-3d-view-interaction/31860 "2023-09-28T08:43:56Z")

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Hi all, Does anyone knows why changing a transform using translation-rotation slide bar (in transform module) make sense (small change shows reasonable change in transformation matrix), but change transformation using 3…

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## [Strange Memory leak related with volumeNode and segmentationNode](https://discourse.slicer.org/t/strange-memory-leak-related-with-volumenode-and-segmentationnode/31936)

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**Author:** [@StephenLeePeng](https://discourse.slicer.org/u/StephenLeePeng)\
**Replies:** 1\
**Last updated:** [September 27, 2023, 4:55pm UTC](https://discourse.slicer.org/t/strange-memory-leak-related-with-volumenode-and-segmentationnode/31936 "2023-09-27T16:55:36Z")

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Environment: Slicer 4.13, Linux Ubuntu 20.04. Background: Recently, I worked with a project, need to load some nii.gz file, vtp file. nii.gz file is loaded as vtkMRMLScalarVolumeNode, as the vtp file is loaded by Mode…

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## [Custom View in 3D Slicer](https://discourse.slicer.org/t/custom-view-in-3d-slicer/31913)

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**Author:** [@Gaelle\_Leroux](https://discourse.slicer.org/u/Gaelle_Leroux)\
**Replies:** 1\
**Last updated:** [September 26, 2023, 7:17pm UTC](https://discourse.slicer.org/t/custom-view-in-3d-slicer/31913 "2023-09-26T19:17:25Z")

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Hello ! I want to develop an extension that will have a custom view. The view consist of three 3D views side by side. In one view I want to have a source model, in the second view I want to have the target model and in …

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## [Click-and-Drag to draw temporary rectangle on slice](https://discourse.slicer.org/t/click-and-drag-to-draw-temporary-rectangle-on-slice/31917)

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**Author:** [@Dieter\_Rosch](https://discourse.slicer.org/u/Dieter_Rosch)\
**Replies:** 0\
**Last updated:** [September 26, 2023, 6:45pm UTC](https://discourse.slicer.org/t/click-and-drag-to-draw-temporary-rectangle-on-slice/31917 "2023-09-26T18:45:39Z")

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Hi, I’m fairly new to Slicer and am working on a plugin for segmentation with a 3rd party tool. One of the functions I want, is to press a button on my plugin, then to use click and drag in a slice to create a rectangul…

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## [How can i ignore popup](https://discourse.slicer.org/t/how-can-i-ignore-popup/31840)

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**Author:** [@FWSU](https://discourse.slicer.org/u/FWSU)\
**Replies:** 3\
**Last updated:** [September 26, 2023, 12:49pm UTC](https://discourse.slicer.org/t/how-can-i-ignore-popup/31840 "2023-09-26T12:49:33Z")

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I’m studying an auto-segmentation project on Jupyter. Is there a way to prevent notification pop-ups or confirmation pop-ups from appearing? For example, after segmentation, when trying to save a label, a completion an…

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## [Revisit GitHub Actions for Slicer CI?](https://discourse.slicer.org/t/revisit-github-actions-for-slicer-ci/31886)

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**Author:** [@fedorov](https://discourse.slicer.org/u/fedorov)\
**Replies:** 2\
**Last updated:** [September 25, 2023, 2:30pm UTC](https://discourse.slicer.org/t/revisit-github-actions-for-slicer-ci/31886 "2023-09-25T14:30:53Z")

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I recently learned that as hard as it is to believe, it appears that GitHub Actions provide free usage or runners for public repositories, and have exceedingly generous limits - 6 hours per job and 35 DAYS per workflow. …

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## [Why is slicer very slow to start the first time，but fast to start the second time？](https://discourse.slicer.org/t/why-is-slicer-very-slow-to-start-the-first-time-but-fast-to-start-the-second-time/31858)

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**Author:** [@icedream](https://discourse.slicer.org/u/icedream)\
**Replies:** 9\
**Last updated:** [September 25, 2023, 2:10pm UTC](https://discourse.slicer.org/t/why-is-slicer-very-slow-to-start-the-first-time-but-fast-to-start-the-second-time/31858 "2023-09-25T14:10:06Z")

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Is there a way to quickly open Slicer after restarting the computer?

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## [Rotation of camera in 3D view without random tilting](https://discourse.slicer.org/t/rotation-of-camera-in-3d-view-without-random-tilting/31842)

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**Author:** [@moraleda](https://discourse.slicer.org/u/moraleda)\
**Replies:** 2\
**Last updated:** [September 22, 2023, 5:27pm UTC](https://discourse.slicer.org/t/rotation-of-camera-in-3d-view-without-random-tilting/31842 "2023-09-22T17:27:36Z")

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Hi everyone, as some of you might feel as I do that the camera in 3D view tilts when rotating, I have rewritten the code in Slicer/Libs/MRML/DisplayableManger/vtkMRMLCameraWidget.cxx in vtkMRMLCameraWidget::ProcessRotat…

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## [Help with pedicle screw planning module](https://discourse.slicer.org/t/help-with-pedicle-screw-planning-module/15322)

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**Author:** [@drvarunagarwal](https://discourse.slicer.org/u/drvarunagarwal)\
**Replies:** 2\
**Last updated:** [September 21, 2023, 8:58pm UTC](https://discourse.slicer.org/t/help-with-pedicle-screw-planning-module/15322 "2023-09-21T20:58:31Z")

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Hi, I am trying to develop a pedicle screw planning extension based on pedicle screw simulator. attached is a video of what we have been able to achieve. As you can see from the above we have made slider…

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## [Pipelines in 3D Slicer](https://discourse.slicer.org/t/pipelines-in-3d-slicer/20107)

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**Author:** [@Connor-Bowley](https://discourse.slicer.org/u/Connor-Bowley)\
**Replies:** 2\
**Last updated:** [September 19, 2023, 8:24pm UTC](https://discourse.slicer.org/t/pipelines-in-3d-slicer/20107 "2023-09-19T20:24:00Z")

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A new extension, Pipelines, is being developed that will allow for GUI create-able pipelines in 3DSlicer. This extension will have at least two new modules: PipelineCreator and PipelineCaseIterator. What is a pipeline? …

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## [There are some problems with the manual](https://discourse.slicer.org/t/there-are-some-problems-with-the-manual/31759)

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**Author:** [@slicer365](https://discourse.slicer.org/u/slicer365)\
**Replies:** 1\
**Last updated:** [September 18, 2023, 4:44pm UTC](https://discourse.slicer.org/t/there-are-some-problems-with-the-manual/31759 "2023-09-18T16:44:19Z")

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These two layout files are not the same as described. When running on the console, the second configuration does not pop up the dock window. https://slicer.readthedocs.io/en/latest/developer\_guide/advanced\_topics.…

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## [Python automation of 'constrain to model' for markups curve](https://discourse.slicer.org/t/python-automation-of-constrain-to-model-for-markups-curve/31768)

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**Author:** [@Jeff\_Zeyl](https://discourse.slicer.org/u/Jeff_Zeyl)\
**Replies:** 1\
**Last updated:** [September 18, 2023, 1:42pm UTC](https://discourse.slicer.org/t/python-automation-of-constrain-to-model-for-markups-curve/31768 "2023-09-18T13:42:33Z")

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I would like to automate the ‘constrain to model’ setting for a markup curve node using python. I have found the c++ function ConstrainPointsToSurface() in the markup curves documentation, with the following parameters: …

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## [Error while enumerating installed pacages when trying to remote attach from VS code](https://discourse.slicer.org/t/error-while-enumerating-installed-pacages-when-trying-to-remote-attach-from-vs-code/31711)

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**Author:** [@Samuel\_Cheng](https://discourse.slicer.org/u/Samuel_Cheng)\
**Replies:** 1\
**Last updated:** [September 18, 2023, 12:53pm UTC](https://discourse.slicer.org/t/error-while-enumerating-installed-pacages-when-trying-to-remote-attach-from-vs-code/31711 "2023-09-18T12:53:55Z")

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I am a newbie to Slicer extension development and tried to set up python debugging with vs code following the github instruction. But I got the error as shown below in the Slicer Python Console. I tested it on Ubuntu 20.…

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## [Model morphing based on MRI landmarks](https://discourse.slicer.org/t/model-morphing-based-on-mri-landmarks/31764)

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**Author:** [@hyncik](https://discourse.slicer.org/u/hyncik)\
**Replies:** 2\
**Last updated:** [September 18, 2023, 5:34am UTC](https://discourse.slicer.org/t/model-morphing-based-on-mri-landmarks/31764 "2023-09-18T05:34:59Z")

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Hi, I am working on a female-specific pelvic floor model development based on a template model and MRI landmarks. Currently I have programmed my extension into Slicer, which reads the template model (computational grid …

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## [How to load the image streaming from opencv to 2D view](https://discourse.slicer.org/t/how-to-load-the-image-streaming-from-opencv-to-2d-view/31756)

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**Author:** [@slicer365](https://discourse.slicer.org/u/slicer365)\
**Replies:** 3\
**Last updated:** [September 17, 2023, 6:53pm UTC](https://discourse.slicer.org/t/how-to-load-the-image-streaming-from-opencv-to-2d-view/31756 "2023-09-17T18:53:41Z")

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I write a script based on opencv pacakge to capture the video streaming. As is shown, now I want to show the image on the red slice view ,what should I do? I know Plus can help,but that is not what I want o…

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## [Are there applications about GIS based on 3D Slicer?](https://discourse.slicer.org/t/are-there-applications-about-gis-based-on-3d-slicer/31733)

<div class="topic-metadata">

**Author:** [@iwangwangwang](https://discourse.slicer.org/u/iwangwangwang)\
**Replies:** 4\
**Last updated:** [September 17, 2023, 6:48am UTC](https://discourse.slicer.org/t/are-there-applications-about-gis-based-on-3d-slicer/31733 "2023-09-17T06:48:34Z")

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Are there applications about GIS based on 3D SLICER? Can 3D SLICER be used to develop GIS applications?

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## [Numpy 2.0 arrives with breaking changes](https://discourse.slicer.org/t/numpy-2-0-arrives-with-breaking-changes/31732)

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**Author:** [@Alex\_Vergara](https://discourse.slicer.org/u/Alex_Vergara)\
**Replies:** 1\
**Last updated:** [September 15, 2023, 7:05pm UTC](https://discourse.slicer.org/t/numpy-2-0-arrives-with-breaking-changes/31732 "2023-09-15T19:05:31Z")

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The numpy team has issued this statement Basically you shall temporarily add requirements to pinned numpy\<2 version, then create a CI based on numpy2 and correct all relevant errors before migrating. If you already hav…

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