# Development **URL:** https://discourse.slicer.org/c/dev/5.md?no_subcategories=false&page=122 [Latest](https://discourse.slicer.org/latest.md) · [Categories](https://discourse.slicer.org/categories.md) · [Tags](https://discourse.slicer.org/tags.md) **Page:** 123 --- ## [Issue tracker maintenance: Resolved issues \<= Slicer 4.8.0 have been closed](https://discourse.slicer.org/t/issue-tracker-maintenance-resolved-issues-slicer-4-8-0-have-been-closed/2228)
**Author:** [@jcfr](https://discourse.slicer.org/u/jcfr)\ **Replies:** 0\ **Last updated:** [March 2, 2018, 4:10pm UTC](https://discourse.slicer.org/t/issue-tracker-maintenance-resolved-issues-slicer-4-8-0-have-been-closed/2228 "2018-03-02T16:10:44Z")
Just to let you know that all resolved issues there were targeted or fixed for version \<= Slicer 4.8.0 have now been closed. This will explain why you probably got some many notifications from the issue tracker. --- ## [Connecting vtk plane widget to a ctk slider](https://discourse.slicer.org/t/connecting-vtk-plane-widget-to-a-ctk-slider/2092)
**Author:** [@asheu](https://discourse.slicer.org/u/asheu)\ **Replies:** 13\ **Last updated:** [February 26, 2018, 6:03pm UTC](https://discourse.slicer.org/t/connecting-vtk-plane-widget-to-a-ctk-slider/2092 "2018-02-26T18:03:14Z")
I’ve received a lot of feedback in regards to how widgets work and am now moving forward with the suggestions. However, I am curious as to whether there is a way to connect existing widget functionalities with slider wid… --- ## [GitHub attribution for prior direct SVN commits](https://discourse.slicer.org/t/github-attribution-for-prior-direct-svn-commits/2163)
**Author:** [@ihnorton](https://discourse.slicer.org/u/ihnorton)\ **Replies:** 4\ **Last updated:** [February 26, 2018, 3:28pm UTC](https://discourse.slicer.org/t/github-attribution-for-prior-direct-svn-commits/2163 "2018-02-26T15:28:46Z")
Related to @jcfr’s earlier post: it is possible to link SVN direct-commit history in Slicer github to each contributor’s profile, although this must be done individually by the contributor, because github does not suppor… --- ## [Commit message, collaborative work and acknowledgment](https://discourse.slicer.org/t/commit-message-collaborative-work-and-acknowledgment/2160)
**Author:** [@jcfr](https://discourse.slicer.org/u/jcfr)\ **Replies:** 0\ **Last updated:** [February 23, 2018, 8:01pm UTC](https://discourse.slicer.org/t/commit-message-collaborative-work-and-acknowledgment/2160 "2018-02-23T20:01:41Z")
Since 2013, we have been giving credit to our fellow co-authors when integrating changes in our code bases. This was done by using commit message trailers like this one: Co-authored-by: FirstName LastName \ **Author:** [@jcfr](https://discourse.slicer.org/u/jcfr)\ **Replies:** 0\ **Last updated:** [February 23, 2018, 3:40pm UTC](https://discourse.slicer.org/t/slicer-recommended-hardware-configuration/2158 "2018-02-23T15:40:40Z") Hi Slicers, I would appreciate your input regarding the recommended configuration to run Slicer. More specifically, as of 2018, which hardware is working well for you, and to do which tasks. You can reply here or dire… --- ## [Display specific slices](https://discourse.slicer.org/t/display-specific-slices/2132)
**Author:** [@brhoom](https://discourse.slicer.org/u/brhoom)\ **Replies:** 1\ **Last updated:** [February 21, 2018, 10:32am UTC](https://discourse.slicer.org/t/display-specific-slices/2132 "2018-02-21T10:32:29Z")
Dear all, I am trying to display a specific location (providing the world coordinates in self.CPos )I tried this code but I keep getting slicer default: # The volumes are added to the Red (axial) slice of the scene… --- ## [Extension adding an entry to Slicer-XYZ.ini \[PYTHONPATH\]](https://discourse.slicer.org/t/extension-adding-an-entry-to-slicer-xyz-ini-pythonpath/1976)
**Author:** [@adamrankin](https://discourse.slicer.org/u/adamrankin)\ **Replies:** 17\ **Last updated:** [February 20, 2018, 4:11am UTC](https://discourse.slicer.org/t/extension-adding-an-entry-to-slicer-xyz-ini-pythonpath/1976 "2018-02-20T04:11:17Z")
Hello, SlicerOpenCV currently installed cv2.pyd to the root directory, and currently import cv2 fails. A fix to this is to install it to the qt-scripted-modules folder, but I was wondering if there was any interest in a… --- ## [Need help navigating Slicer dashboard](https://discourse.slicer.org/t/need-help-navigating-slicer-dashboard/2118)
**Author:** [@fedorov](https://discourse.slicer.org/u/fedorov)\ **Replies:** 4\ **Last updated:** [February 19, 2018, 11:10pm UTC](https://discourse.slicer.org/t/need-help-navigating-slicer-dashboard/2118 "2018-02-19T23:10:48Z")
I no longer see nightly builds at the location they used to be: http://slicer.cdash.org/index.php?project=Slicer4, the only category is Extensions-4.8-Nightly. The download page shows Slicer was build last night, but I c… --- ## [Slicer build error on Ubuntu](https://discourse.slicer.org/t/slicer-build-error-on-ubuntu/2108)
**Author:** [@AhmadHossam10](https://discourse.slicer.org/u/AhmadHossam10)\ **Replies:** 6\ **Last updated:** [February 18, 2018, 2:55pm UTC](https://discourse.slicer.org/t/slicer-build-error-on-ubuntu/2108 "2018-02-18T14:55:21Z")
Operating system: Ubuntu 17.10.1 Slicer version: latest version Expected behavior: build successful Actual behavior: build failed I contacted you before with my problem with ubuntu 17.10 and you fixed it after I clon… --- ## [3D Slicer Build Error with GCC 7 on Ubuntu 17.04](https://discourse.slicer.org/t/3d-slicer-build-error-with-gcc-7-on-ubuntu-17-04/2082)
**Author:** [@AhmadHossam10](https://discourse.slicer.org/u/AhmadHossam10)\ **Replies:** 18\ **Last updated:** [February 18, 2018, 12:22am UTC](https://discourse.slicer.org/t/3d-slicer-build-error-with-gcc-7-on-ubuntu-17-04/2082 "2018-02-18T00:22:23Z")
I am trying to build 3D Slicer but an error occurs, cc1 : warnings are being treated as errors. I searched for -Werror flag to remove it but I didn’t find it. I edited my CmakeLists.txt and wrote SET(CMAKE\_CXX\_FLAGS “-… --- ## [Nightly build TESTS failing for extensions with dependencies to other scriptable modules](https://discourse.slicer.org/t/nightly-build-tests-failing-for-extensions-with-dependencies-to-other-scriptable-modules/1483)
**Author:** [@che85](https://discourse.slicer.org/u/che85)\ **Replies:** 61\ **Last updated:** [February 16, 2018, 11:17pm UTC](https://discourse.slicer.org/t/nightly-build-tests-failing-for-extensions-with-dependencies-to-other-scriptable-modules/1483 "2018-02-16T23:17:18Z")
Hi there, today I noticed that (for a long time) our extension tests has been failing (generic, but also our custom tests) e.g. http://slicer.cdash.org/testDetails.php?test=8407693&build=1124707 Our mpReview extension… --- ## [Different dashboard for master and stable builds](https://discourse.slicer.org/t/different-dashboard-for-master-and-stable-builds/2091)
**Author:** [@jcfr](https://discourse.slicer.org/u/jcfr)\ **Replies:** 9\ **Last updated:** [February 16, 2018, 8:37pm UTC](https://discourse.slicer.org/t/different-dashboard-for-master-and-stable-builds/2091 "2018-02-16T20:37:06Z")
Hi Slicers, Following last week hangout, we decided to improve the developer experience by submitting build results associated with the stable and master version of Slicer to different dashboards. Which cdash URL for w… --- ## [Surface questions](https://discourse.slicer.org/t/surface-questions/2078)
**Author:** [@brhoom](https://discourse.slicer.org/u/brhoom)\ **Replies:** 9\ **Last updated:** [February 15, 2018, 9:46pm UTC](https://discourse.slicer.org/t/surface-questions/2078 "2018-02-15T21:46:54Z")
Dear All I have a model (solid) and I would like to do following: Generate a surface from the model. I tried Sobel edges, modifying the model properties, somes extensions but the result are not the same as I get with … --- ## [Adding an icon to a button](https://discourse.slicer.org/t/adding-an-icon-to-a-button/1012)
**Author:** [@mschumaker](https://discourse.slicer.org/u/mschumaker)\ **Replies:** 16\ **Last updated:** [February 15, 2018, 8:19pm UTC](https://discourse.slicer.org/t/adding-an-icon-to-a-button/1012 "2018-02-15T20:19:52Z")
I’ve tried a number of things to add a resource and use an icon with a button. I’ve noticed I can access Slicer resources, but not ones in the Resources folder of my module. I’d like to do the following, hopefully with a… --- ## [Crash on exit (not related to charts)](https://discourse.slicer.org/t/crash-on-exit-not-related-to-charts/2057)
**Author:** [@cpinter](https://discourse.slicer.org/u/cpinter)\ **Replies:** 3\ **Last updated:** [February 15, 2018, 2:42pm UTC](https://discourse.slicer.org/t/crash-on-exit-not-related-to-charts/2057 "2018-02-15T14:42:57Z")
Many python tests are failing because there is a crash on exit, most of these not related to the charts-related crash that is being fixed now. Here’s a Slicer and a SlicerRT dashboard. I did some debugging with two of t… --- ## [T2 Map Multi-volume related questions](https://discourse.slicer.org/t/t2-map-multi-volume-related-questions/2076)
**Author:** [@brhoom](https://discourse.slicer.org/u/brhoom)\ **Replies:** 12\ **Last updated:** [February 14, 2018, 6:33pm UTC](https://discourse.slicer.org/t/t2-map-multi-volume-related-questions/2076 "2018-02-14T18:33:28Z")
Operating system: Ubuntu 16 Slicer version: 4.8 Expected behavior: Display volume information and an image Actual behavior: Slicer displays a white image and crash when opening the “Volume” Module Dear all, I have … --- ## [Drawing shapes in volume rendering](https://discourse.slicer.org/t/drawing-shapes-in-volume-rendering/2068)
**Author:** [@Jonas](https://discourse.slicer.org/u/Jonas)\ **Replies:** 16\ **Last updated:** [February 14, 2018, 10:36am UTC](https://discourse.slicer.org/t/drawing-shapes-in-volume-rendering/2068 "2018-02-14T10:36:52Z")
Hello, This is my first post on this forum, and I am new to Slicer. Hopefully you will be tolerant :slight\_smile: I want to create a shape, which would be visible in VR - the best approach would be to use Fiducials (as… --- ## [Scripted module initialization after application startup is completed](https://discourse.slicer.org/t/scripted-module-initialization-after-application-startup-is-completed/2080)
**Author:** [@lassoan](https://discourse.slicer.org/u/lassoan)\ **Replies:** 0\ **Last updated:** [February 13, 2018, 4:15pm UTC](https://discourse.slicer.org/t/scripted-module-initialization-after-application-startup-is-completed/2080 "2018-02-13T16:15:29Z")
Modules that relied on using a singleshot timer to perform additional initialization steps after Slicer startup is completed, in Slicer-4.9 (recent trunk versions) must switch to use the application’s startupCompleted() … --- ## [Adding Widgets to Layout](https://discourse.slicer.org/t/adding-widgets-to-layout/2074)
**Author:** [@asheu](https://discourse.slicer.org/u/asheu)\ **Replies:** 2\ **Last updated:** [February 12, 2018, 10:20pm UTC](https://discourse.slicer.org/t/adding-widgets-to-layout/2074 "2018-02-12T22:20:11Z")
Hi there, I am a fairly new to the game in terms of Slicer module development so would like some help. Right now, I am trying to add a LR slider widget onto the main window. Ideally, I would want this slider to interact… --- ## [Python qt library is missing from today's mac nightly](https://discourse.slicer.org/t/python-qt-library-is-missing-from-todays-mac-nightly/2072)
**Author:** [@pieper](https://discourse.slicer.org/u/pieper)\ **Replies:** 6\ **Last updated:** [February 12, 2018, 9:33pm UTC](https://discourse.slicer.org/t/python-qt-library-is-missing-from-todays-mac-nightly/2072 "2018-02-12T21:33:54Z")
The 2018-02-11 mac nightly won’t start for me because it’s missing the PythonQT library. Library not loaded: @rpath/lib/Slicer-4.9/libPythonQt.dylib Referenced from: /private/var/folders/\*/Slicer.app/Contents/MacOS/… --- ## [Slicer FTBFS Debian testing](https://discourse.slicer.org/t/slicer-ftbfs-debian-testing/2058)
**Author:** [@gcsharp](https://discourse.slicer.org/u/gcsharp)\ **Replies:** 4\ **Last updated:** [February 11, 2018, 6:38am UTC](https://discourse.slicer.org/t/slicer-ftbfs-debian-testing/2058 "2018-02-11T06:38:40Z")
Hello slicers, Slicer FTBFS debian testing with default options. Default settings need updating? Thanks! Greg \[ 46%\] Performing build step for ‘DCMTK’ \[ 0%\] Building CXX object ofstd/libsrc/CMakeFiles/ofstd.dir/of… --- ## [Build error caused by qSlicerSubjectHierarchyPlotsPlugin](https://discourse.slicer.org/t/build-error-caused-by-qslicersubjecthierarchyplotsplugin/2060)
**Author:** [@chir.set](https://discourse.slicer.org/u/chir.set)\ **Replies:** 3\ **Last updated:** [February 10, 2018, 6:26pm UTC](https://discourse.slicer.org/t/build-error-caused-by-qslicersubjecthierarchyplotsplugin/2060 "2018-02-10T18:26:54Z")
I’m having this error while building Slicer on Linux (Qt5/VTK9, gcc 7.3.0) : /home/arc/src/Slicer/Modules/Loadable/Plots/SubjectHierarchyPlugins/qSlicerSubjectHierarchyPlotsPlugin.cxx:306:10: error: cannot convert 'boo… --- ## [Transition of nightly build to Qt5, VTK9, CMake 3.9 and C++11](https://discourse.slicer.org/t/transition-of-nightly-build-to-qt5-vtk9-cmake-3-9-and-c-11/1918)
**Author:** [@jcfr](https://discourse.slicer.org/u/jcfr)\ **Replies:** 28\ **Last updated:** [February 8, 2018, 2:23pm UTC](https://discourse.slicer.org/t/transition-of-nightly-build-to-qt5-vtk9-cmake-3-9-and-c-11/1918 "2018-02-08T14:23:27Z")
Hi All, Now that we have released Slicer 4.8.1 and also addressed a lot of issues with Qt5 and VTK9, the time has come to transition our nightly builds. IMPORTANT: Time the nightly builds are stabilized, you should exp… --- ## [Launch error message in Qt5 debug build](https://discourse.slicer.org/t/launch-error-message-in-qt5-debug-build/2039)
**Author:** [@ihnorton](https://discourse.slicer.org/u/ihnorton)\ **Replies:** 4\ **Last updated:** [February 7, 2018, 11:47am UTC](https://discourse.slicer.org/t/launch-error-message-in-qt5-debug-build/2039 "2018-02-07T11:47:44Z")
Has anyone else seen this, immediately on application launch? Slicer still appears to start ok. Debug build, macOS 10.12, SDK 10.12, Qt5 from upstream. It appeared after the most recent ITK update. Error: In /opt/bld/s… --- ## [Subsample a 3D volume](https://discourse.slicer.org/t/subsample-a-3d-volume/1692)
**Author:** [@jonieva](https://discourse.slicer.org/u/jonieva)\ **Replies:** 5\ **Last updated:** [February 6, 2018, 3:44pm UTC](https://discourse.slicer.org/t/subsample-a-3d-volume/1692 "2018-02-06T15:44:20Z")
Hi guys, I’m trying to subsample a 3D volume in a particular plane, while keeping the same spacing in the other two. I found an example of something similar here: https://www.slicer.org/wiki/Documentation/4.6/ScriptRep… --- ## [Configuring vtkMRMLSliceNode](https://discourse.slicer.org/t/configuring-vtkmrmlslicenode/2028)
**Author:** [@asheu](https://discourse.slicer.org/u/asheu)\ **Replies:** 1\ **Last updated:** [February 6, 2018, 5:36pm UTC](https://discourse.slicer.org/t/configuring-vtkmrmlslicenode/2028 "2018-02-06T17:36:38Z")
I’m currently trying to configure the vrkMRML slice node so that I can create a Slicer viewer (for example the coronal slice) that is able to be switched between two image datasets (say CT and MR images). I would like to… --- ## [kruvi: crowdfunding Slicer extension development](https://discourse.slicer.org/t/kruvi-crowdfunding-slicer-extension-development/2026)
**Author:** [@mihai](https://discourse.slicer.org/u/mihai)\ **Replies:** 3\ **Last updated:** [February 5, 2018, 10:44pm UTC](https://discourse.slicer.org/t/kruvi-crowdfunding-slicer-extension-development/2026 "2018-02-05T22:44:54Z")
Dear all, I am a dentist and software engineer and have been successfully using Slicer over the past few years to plan simple dental implant surgeries and, in combination with 3D modelling packages, design surgical guid… --- ## [How to read linear transform from C++ CLI](https://discourse.slicer.org/t/how-to-read-linear-transform-from-c-cli/1994)
**Author:** [@dzenanz](https://discourse.slicer.org/u/dzenanz)\ **Replies:** 8\ **Last updated:** [February 2, 2018, 1:57pm UTC](https://discourse.slicer.org/t/how-to-read-linear-transform-from-c-cli/1994 "2018-02-02T13:57:41Z")
Slicer used to write .h5 or .tfm files when a transform needed to be passed to a CLI: \ \transform0\ \...\… --- ## [Updating minimum required version of CMake to 3.9.5](https://discourse.slicer.org/t/updating-minimum-required-version-of-cmake-to-3-9-5/1873)
**Author:** [@jcfr](https://discourse.slicer.org/u/jcfr)\ **Replies:** 1\ **Last updated:** [January 31, 2018, 2:49am UTC](https://discourse.slicer.org/t/updating-minimum-required-version-of-cmake-to-3-9-5/1873 "2018-01-31T02:49:18Z")
Similarly to ITK, I suggest we use the version available with the Ubuntu Long-Term-Support distribution at the time of the release (this will be 18.04 - Bionic Beaver). This version is currently CMake 3.9.5. For refere… --- ## [Side-by-side separate segmentation editing](https://discourse.slicer.org/t/side-by-side-separate-segmentation-editing/1222)
**Author:** [@mschumaker](https://discourse.slicer.org/u/mschumaker)\ **Replies:** 13\ **Last updated:** [January 30, 2018, 3:16pm UTC](https://discourse.slicer.org/t/side-by-side-separate-segmentation-editing/1222 "2018-01-30T15:16:41Z")
Thanks very much for previous assistance. I’m trying to create side-by-side views of different volumes (same patient, different MR acquisition sequences), with different segmentations active in each view. I have created… [Previous page](https://discourse.slicer.org/c/dev/5.md?no_subcategories=false&page=121) [Next page](https://discourse.slicer.org/c/dev/5.md?no_subcategories=false&page=123)