# Development

**URL:** https://discourse.slicer.org/c/dev/5.md?no_subcategories=false&page=112

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

**Page:** 113

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## [Where to store Slicer tutorial slides?](https://discourse.slicer.org/t/where-to-store-slicer-tutorial-slides/5369)

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**Author:** [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Replies:** 2\
**Last updated:** [January 15, 2019, 5:28pm UTC](https://discourse.slicer.org/t/where-to-store-slicer-tutorial-slides/5369 "2019-01-15T17:28:36Z")

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Most tutorials are created using PowerPoint but published on the Slicer wiki as pdf. To facilitate contributions, we should make the source files available in GitHub. Which repository should we use? There are these exis…

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## [Bug in nigthly version](https://discourse.slicer.org/t/bug-in-nigthly-version/5377)

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**Author:** [@Alex\_Vergara](https://discourse.slicer.org/u/Alex_Vergara)\
**Replies:** 0\
**Last updated:** [January 15, 2019, 4:45pm UTC](https://discourse.slicer.org/t/bug-in-nigthly-version/5377 "2019-01-15T16:45:15Z")

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Version 4.11.0 Expected behaviour: when using the slicer.util.plot in a python interpreter with more than 2 plots in the same graphic it shows a legend, that legend was changeable by plt.GetNthPlotSeriesNode(i).SetName(…

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## [Making landmark-based warping transformation faster](https://discourse.slicer.org/t/making-landmark-based-warping-transformation-faster/5247)

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**Author:** [@Abdelkhalek](https://discourse.slicer.org/u/Abdelkhalek)\
**Replies:** 9\
**Last updated:** [January 15, 2019, 4:15am UTC](https://discourse.slicer.org/t/making-landmark-based-warping-transformation-faster/5247 "2019-01-15T04:15:25Z")

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Hi, what is the Python library which I can use in order to speed up a 3D Slicer script? Many thanks in advance.

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## [Can I have two endoscope fly-window with dual 3D](https://discourse.slicer.org/t/can-i-have-two-endoscope-fly-window-with-dual-3d/5309)

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**Author:** [@timeanddoctor](https://discourse.slicer.org/u/timeanddoctor)\
**Replies:** 9\
**Last updated:** [January 14, 2019, 4:18am UTC](https://discourse.slicer.org/t/can-i-have-two-endoscope-fly-window-with-dual-3d/5309 "2019-01-14T04:18:30Z")

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I am going to have two 3d fly-window just like right-left eye. Firstly, I am planing to create dual contacting endoscope windows. can I have two endoscope

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## [Markups for angle, line and closed/open spline](https://discourse.slicer.org/t/markups-for-angle-line-and-closed-open-spline/4729)

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**Author:** [@Davide\_Punzo](https://discourse.slicer.org/u/Davide_Punzo)\
**Replies:** 5\
**Last updated:** [January 11, 2019, 8:19pm UTC](https://discourse.slicer.org/t/markups-for-angle-line-and-closed-open-spline/4729 "2019-01-11T20:19:53Z")

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Hi all, I am starting to work on VTK widgets / Slicer Markups for: Adding middle/right/double clicks vtk events / Slicer Markups signals Few customization to the VTK widgets (e.g., display a centroid point for closed …

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## [Apply Transformation to a model](https://discourse.slicer.org/t/apply-transformation-to-a-model/5327)

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**Author:** [@siaeleni](https://discourse.slicer.org/u/siaeleni)\
**Replies:** 3\
**Last updated:** [January 10, 2019, 6:18pm UTC](https://discourse.slicer.org/t/apply-transformation-to-a-model/5327 "2019-01-10T18:18:14Z")

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Hi, I want to set and apply a transformation matrix using Python. Here is my code: transform = slicer.vtkMRMLTransformNode() transform.SetName('Transformation') slicer.mrmlScene.AddNode(transform) matrix = vtk.vtkMat…

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## [Relationship between SegmentEditorWidget and SegmentEditorNode?](https://discourse.slicer.org/t/relationship-between-segmenteditorwidget-and-segmenteditornode/5304)

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**Author:** [@mikebind](https://discourse.slicer.org/u/mikebind)\
**Replies:** 4\
**Last updated:** [January 9, 2019, 1:07am UTC](https://discourse.slicer.org/t/relationship-between-segmenteditorwidget-and-segmenteditornode/5304 "2019-01-09T01:07:32Z")

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I am working on a set of custom extensions, and I have been able to muddle through to get several things working, but I am now running into problems and having trouble debugging. I think my problem may be related to not…

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## [Failed build on Windows using VS2015 (with VS2017 also present on system)](https://discourse.slicer.org/t/failed-build-on-windows-using-vs2015-with-vs2017-also-present-on-system/3640)

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**Author:** [@KaburNaj](https://discourse.slicer.org/u/KaburNaj)\
**Replies:** 16\
**Last updated:** [January 8, 2019, 5:34am UTC](https://discourse.slicer.org/t/failed-build-on-windows-using-vs2015-with-vs2017-also-present-on-system/3640 "2019-01-08T05:34:31Z")

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Operating system: Windows 7 Enterprise, Service Pack 1 Slicer version: 4.8.1 (r26813) Expected behavior: Build from Source Actual behavior: Build errors in CTK project I am building the latest stable release of Slice…

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## [Observe annotation ruler size change](https://discourse.slicer.org/t/observe-annotation-ruler-size-change/5039)

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**Author:** [@giancu](https://discourse.slicer.org/u/giancu)\
**Replies:** 4\
**Last updated:** [January 7, 2019, 1:48pm UTC](https://discourse.slicer.org/t/observe-annotation-ruler-size-change/5039 "2019-01-07T13:48:26Z")

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Hi. I try to capture the change in size of a vtkMRMLAnnotationRulerNode. Is there any event (signal) which is triggered in such a situation? I am using the nice LineProfile example of Andras, but I would like to be able …

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## [Using Python for image registration](https://discourse.slicer.org/t/using-python-for-image-registration/5207)

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**Author:** [@dinank](https://discourse.slicer.org/u/dinank)\
**Replies:** 1\
**Last updated:** [December 29, 2018, 5:53pm UTC](https://discourse.slicer.org/t/using-python-for-image-registration/5207 "2018-12-29T17:53:50Z")

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Operating system: Linux Slicer version: 4.8.1 I am new to Slicer and I have a task to register MRI and CT volumes using Rigid registration. I have a large data and do not want to repeat the process many times for diffe…

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## [Gaussian blur multi-volume](https://discourse.slicer.org/t/gaussian-blur-multi-volume/4536)

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**Author:** [@Nicholas.jacobson](https://discourse.slicer.org/u/Nicholas.jacobson)\
**Replies:** 9\
**Last updated:** [December 28, 2018, 10:34am UTC](https://discourse.slicer.org/t/gaussian-blur-multi-volume/4536 "2018-12-28T10:34:55Z")

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Hello, We are creating an animation from a multi volume of a beating heart. In order to visualize this properly we need to create a gaussian blur on the image and/or modify frames with in this multi volume. Because we w…

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## [Accessing Segmentation Layer Visibility By View](https://discourse.slicer.org/t/accessing-segmentation-layer-visibility-by-view/5090)

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**Author:** [@bsmarine](https://discourse.slicer.org/u/bsmarine)\
**Replies:** 4\
**Last updated:** [December 26, 2018, 4:35am UTC](https://discourse.slicer.org/t/accessing-segmentation-layer-visibility-by-view/5090 "2018-12-26T04:35:46Z")

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Hi All, I’m curious if there is a way to show particular segmentation nodes on each of four different views in a two over two layout programmatically. An example of doing this for background volumes would be as follows: …

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## [How to obtain x,y,z points from fiducial points and insert them into vtkPoints](https://discourse.slicer.org/t/how-to-obtain-x-y-z-points-from-fiducial-points-and-insert-them-into-vtkpoints/5113)

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**Author:** [@chaddy1004](https://discourse.slicer.org/u/chaddy1004)\
**Replies:** 7\
**Last updated:** [December 21, 2018, 10:25pm UTC](https://discourse.slicer.org/t/how-to-obtain-x-y-z-points-from-fiducial-points-and-insert-them-into-vtkpoints/5113 "2018-12-21T22:25:57Z")

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Hello I am trying to get the point values of fiducial points and put them into a vtkPoints. The end goal is to create a tps transformation using these fiducial points. tps = vtk.vtkThinPlateSplineTransform() tps.SetSo…

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## [Add Slicer Nightly to Homebrew (macOS)](https://discourse.slicer.org/t/add-slicer-nightly-to-homebrew-macos/811)

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**Author:** [@Fernando](https://discourse.slicer.org/u/Fernando)\
**Replies:** 30\
**Last updated:** [December 20, 2018, 7:23pm UTC](https://discourse.slicer.org/t/add-slicer-nightly-to-homebrew-macos/811 "2018-12-20T19:23:42Z")

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Hi all, I am doing a fresh install of my OS and realized how powerful brew is. I checked whether I could install Slicer with it and discovered that only the stable version is available: brew cask install slicer I thou…

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## [Hide module panel by default](https://discourse.slicer.org/t/hide-module-panel-by-default/5156)

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**Author:** [@Ulla](https://discourse.slicer.org/u/Ulla)\
**Replies:** 1\
**Last updated:** [December 20, 2018, 5:53pm UTC](https://discourse.slicer.org/t/hide-module-panel-by-default/5156 "2018-12-20T17:53:08Z")

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Hi, I want to configure my Slicer so that the “Module panel” won’t show up when starting Slicer. Can that be done somewhere from application settings or with a Python script? It doesn’t seem to be possible from applica…

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## [Loading an MRB file](https://discourse.slicer.org/t/loading-an-mrb-file/5116)

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**Author:** [@smrolfe](https://discourse.slicer.org/u/smrolfe)\
**Replies:** 3\
**Last updated:** [December 19, 2018, 11:15pm UTC](https://discourse.slicer.org/t/loading-an-mrb-file/5116 "2018-12-19T23:15:11Z")

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Hello, I’m trying to load an MRB file into Slicer using the following snippet: loadedNodes = vtk.vtkCollection() fileProperties = {} fileProperties\[‘fileName’\] = ‘…localData/Slicer/RemoteIO/mCT\_mouse.mrb’ success = …

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## [\[VTK\] Render to target/texture?](https://discourse.slicer.org/t/vtk-render-to-target-texture/5146)

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**Author:** [@adamrankin](https://discourse.slicer.org/u/adamrankin)\
**Replies:** 1\
**Last updated:** [December 19, 2018, 7:07pm UTC](https://discourse.slicer.org/t/vtk-render-to-target-texture/5146 "2018-12-19T19:07:46Z")

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Hello all, Does anyone have any experience with rendering to a texture instead of an on-screen window? For the life of me I cannot find a VTK example that does this. Links to examples or a high-level description should…

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## [Adding operations to Segment Editor's Scissors tool](https://discourse.slicer.org/t/adding-operations-to-segment-editors-scissors-tool/5124)

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**Author:** [@hherhold](https://discourse.slicer.org/u/hherhold)\
**Replies:** 2\
**Last updated:** [December 19, 2018, 4:09pm UTC](https://discourse.slicer.org/t/adding-operations-to-segment-editors-scissors-tool/5124 "2018-12-19T16:09:55Z")

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Greetings Slicers, I was thinking about combining some operations with the Scissors tool. It would be really useful in some of my scans to be able to do island removal in a certain area, for example - draw a symmetric s…

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## [arrayFromVolume](https://discourse.slicer.org/t/arrayfromvolume/5121)

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**Author:** [@Abdelkhalek](https://discourse.slicer.org/u/Abdelkhalek)\
**Replies:** 3\
**Last updated:** [December 19, 2018, 2:46pm UTC](https://discourse.slicer.org/t/arrayfromvolume/5121 "2018-12-19T14:46:41Z")

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Hi everyone, could you please tell me how can I find the equation or the mathematical procedure which is behind the arrayFromVolume? Thank you in advance.

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## [Building Slicer on Windows 10](https://discourse.slicer.org/t/building-slicer-on-windows-10/720)

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**Author:** [@sandra](https://discourse.slicer.org/u/sandra)\
**Replies:** 12\
**Last updated:** [December 19, 2018, 3:56am UTC](https://discourse.slicer.org/t/building-slicer-on-windows-10/720 "2018-12-19T03:56:39Z")

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Hi everyone ! I would like to build Slicer on Windows 10. To do so, I’m using Microsoft Visual Studio 2013 and as a prerequisite I built Qt 5.9.1 (the latest). Then I use cmake to build Slicer, as option I set QT\_QMAKE…

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## [Custom default name for volume created from qMRMLNodeComboBox](https://discourse.slicer.org/t/custom-default-name-for-volume-created-from-qmrmlnodecombobox/5136)

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**Author:** [@emckenzi123](https://discourse.slicer.org/u/emckenzi123)\
**Replies:** 2\
**Last updated:** [December 19, 2018, 12:48am UTC](https://discourse.slicer.org/t/custom-default-name-for-volume-created-from-qmrmlnodecombobox/5136 "2018-12-19T00:48:31Z")

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Hello, I am writing my own python scripted loadable module, and I have a qMRMLNodeComboBox where the user is able to optionally choose to “Create a New Volume As…”. However, currently the default New Name is “Volume\_”.…

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## [No openIGTlink module after building 3D Slicer 4.10 (r27501)](https://discourse.slicer.org/t/no-openigtlink-module-after-building-3d-slicer-4-10-r27501/5099)

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**Author:** [@wpgao](https://discourse.slicer.org/u/wpgao)\
**Replies:** 2\
**Last updated:** [December 17, 2018, 2:14am UTC](https://discourse.slicer.org/t/no-openigtlink-module-after-building-3d-slicer-4-10-r27501/5099 "2018-12-17T02:14:33Z")

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Hi guys, Why the module OpenIGTLink disappeared after building 3D Slicer 4.10 (r27501) Thanks!

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## [Not locating a file - Called by an scripted module](https://discourse.slicer.org/t/not-locating-a-file-called-by-an-scripted-module/5070)

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**Author:** [@jadam1995](https://discourse.slicer.org/u/jadam1995)\
**Replies:** 6\
**Last updated:** [December 16, 2018, 2:02am UTC](https://discourse.slicer.org/t/not-locating-a-file-called-by-an-scripted-module/5070 "2018-12-16T02:02:55Z")

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Operating system: Windows (6.1.7601) Slicer version: 4.10.0 Expected behavior: Load in python package to slicer, package is loaded, use package in scripted module to access and load an external audio data file. Actual…

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## [Simplifying the use of vtkNew](https://discourse.slicer.org/t/simplifying-the-use-of-vtknew/560)

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**Author:** [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Replies:** 7\
**Last updated:** [December 15, 2018, 5:57am UTC](https://discourse.slicer.org/t/simplifying-the-use-of-vtknew/560 "2018-12-15T05:57:24Z")

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For C++ developers only. We had a discussion on the VTK mailing list arguing that vtkNew should be as simple to use as vtkSmartPointer or not. Currently, when an object is created by vtkNew, you need to call .GetPointer(…

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## [Improving testing data management for "self-test"](https://discourse.slicer.org/t/improving-testing-data-management-for-self-test/5014)

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**Author:** [@jcfr](https://discourse.slicer.org/u/jcfr)\
**Replies:** 7\
**Last updated:** [December 14, 2018, 8:26pm UTC](https://discourse.slicer.org/t/improving-testing-data-management-for-self-test/5014 "2018-12-14T20:26:01Z")

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We recently improved the time required to run python self-tests from 2x to 10x depending on the case, see here for more details. I suggest to leverage and improve the SampleData logic to: cache downloaded test data i…

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## [DICOM browser display fields](https://discourse.slicer.org/t/dicom-browser-display-fields/5031)

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**Author:** [@cpinter](https://discourse.slicer.org/u/cpinter)\
**Replies:** 5\
**Last updated:** [December 13, 2018, 7:34pm UTC](https://discourse.slicer.org/t/dicom-browser-display-fields/5031 "2018-12-13T19:34:41Z")

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Hi core devs, We have had this plan for several years now to customize the content of the fields that appear in the DICOM browser. We wanted to get rid of the ^ character in the patient name, show the time a patient/stu…

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## [Dashboards and downloads expected to be offline on December 15th](https://discourse.slicer.org/t/dashboards-and-downloads-expected-to-be-offline-on-december-15th/5046)

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**Author:** [@jcfr](https://discourse.slicer.org/u/jcfr)\
**Replies:** 0\
**Last updated:** [December 11, 2018, 6:11pm UTC](https://discourse.slicer.org/t/dashboards-and-downloads-expected-to-be-offline-on-december-15th/5046 "2018-12-11T18:11:52Z")

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This is exciting, our Kitware headquarter is relocating to a new building ! Worth noting that our network bandwidth will also be improved. Network and servers are expected to be fully operational up until the morning of…

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## [Is it possible to use markup in the Help and Acknowledgement sections](https://discourse.slicer.org/t/is-it-possible-to-use-markup-in-the-help-and-acknowledgement-sections/5037)

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**Author:** [@muratmaga](https://discourse.slicer.org/u/muratmaga)\
**Replies:** 1\
**Last updated:** [December 11, 2018, 5:29am UTC](https://discourse.slicer.org/t/is-it-possible-to-use-markup-in-the-help-and-acknowledgement-sections/5037 "2018-12-11T05:29:41Z")

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Is there a way to include bold or italic text in the Help & Acknowledgement sections of a scripted loadable module?

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## [2D Ultrasound Dicom Measurement Units](https://discourse.slicer.org/t/2d-ultrasound-dicom-measurement-units/5030)

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**Author:** [@MGH\_CURT](https://discourse.slicer.org/u/MGH_CURT)\
**Replies:** 0\
**Last updated:** [December 10, 2018, 3:48pm UTC](https://discourse.slicer.org/t/2d-ultrasound-dicom-measurement-units/5030 "2018-12-10T15:48:58Z")

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Operating system: Windows 10 Slicer version: 4.8.1 Expected behavior: When reading ultrasound dicom images to perform measurements, Slicer should read in the dicom metadata’s SequenceOfUltrasoundRegions.Item\_1.Physical…

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## [Extension contribution checklist](https://discourse.slicer.org/t/extension-contribution-checklist/4975)

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**Author:** [@jcfr](https://discourse.slicer.org/u/jcfr)\
**Replies:** 3\
**Last updated:** [December 7, 2018, 7:54am UTC](https://discourse.slicer.org/t/extension-contribution-checklist/4975 "2018-12-07T07:54:39Z")

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extension repository name Earlier today, following the submission of a pull request adding a new extension to the Extension index, the associated test failed: with the following message: . Following input from @…

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