# Latest

**URL:** https://discourse.vtk.org/latest.md?page=243

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

**Page:** 244

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## [mun](https://discourse.vtk.org/t/mun/1353)

<div class="topic-metadata">

**Author:** [@utkarshayachit](https://discourse.vtk.org/u/utkarshayachit)\
**Replies:** 2\
**Last updated:** [July 16, 2019, 2:24pm UTC](https://discourse.vtk.org/t/mun/1353 "2019-07-16T14:24:04Z")

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Is anyone debugging something on mun? There are some files open on the system which is causing the git updates to fails causing the dashboards runs to fail. If I don’t hear back in the new hour or so, I’ll restore the sy…

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## [Error about AddViewProp](https://discourse.vtk.org/t/error-about-addviewprop/1352)

<div class="topic-metadata">

**Author:** [@Moun](https://discourse.vtk.org/u/Moun)\
**Replies:** 0\
**Last updated:** [July 16, 2019, 1:57pm UTC](https://discourse.vtk.org/t/error-about-addviewprop/1352 "2019-07-16T13:57:15Z")

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Hello VTK experts, I am new and I would like to develop a volume in 3D. In cases, I have used the addviewprop. Unfortunately, I have a crash when i used this function and I couldn’t solve this problem. This is my erro…

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## [Deadline Extended: MICCAI CLIP 2019: Clinical Image-based Procedures: Towards Holistic Patient Models for Personalised Healthcare](https://discourse.vtk.org/t/deadline-extended-miccai-clip-2019-clinical-image-based-procedures-towards-holistic-patient-models-for-personalised-healthcare/1350)

<div class="topic-metadata">

**Author:** [@Cristina\_Oyarzun](https://discourse.vtk.org/u/Cristina_Oyarzun)\
**Replies:** 0\
**Last updated:** [July 16, 2019, 10:55am UTC](https://discourse.vtk.org/t/deadline-extended-miccai-clip-2019-clinical-image-based-procedures-towards-holistic-patient-models-for-personalised-healthcare/1350 "2019-07-16T10:55:03Z")

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CALL FOR PAPERS MICCAI 2019 Workshop on Clinical Image-based Procedures: Towards Holistic Patient Models for Personalised Healthcare October 17, 2019 Shenzhen, China Website:http://miccai-clip.org/ ================…

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## [invalid use of incomplete type ‘class vtkPolyData’](https://discourse.vtk.org/t/invalid-use-of-incomplete-type-class-vtkpolydata/1337)

<div class="topic-metadata">

**Author:** [@nicoco](https://discourse.vtk.org/u/nicoco)\
**Replies:** 5\
**Last updated:** [July 16, 2019, 8:57am UTC](https://discourse.vtk.org/t/invalid-use-of-incomplete-type-class-vtkpolydata/1337 "2019-07-16T08:57:04Z")

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Hello everyone, I would like to test whether an array is present in a polydata, but I am getting this error at compile time: NicocoTest.cxx:10:39: error: invalid use of incomplete type ‘class vtkPolyData’ if (reader…

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## [Proper Exponents in Text](https://discourse.vtk.org/t/proper-exponents-in-text/1347)

<div class="topic-metadata">

**Author:** [@ChristopherWaters](https://discourse.vtk.org/u/ChristopherWaters)\
**Replies:** 0\
**Last updated:** [July 16, 2019, 7:03am UTC](https://discourse.vtk.org/t/proper-exponents-in-text/1347 "2019-07-16T07:03:13Z")

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Can’t figure out how to display exponents properly in a text actor/axis title (2D). Seems like a simple question but can’t find any answers, even checking documentation of text classes… Any help would be appreciated.

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## [Adding texture on the image](https://discourse.vtk.org/t/adding-texture-on-the-image/1346)

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**Author:** [@lovetoV\_T\_K](https://discourse.vtk.org/u/lovetoV_T_K)\
**Replies:** 0\
**Last updated:** [July 16, 2019, 5:31am UTC](https://discourse.vtk.org/t/adding-texture-on-the-image/1346 "2019-07-16T05:31:42Z")

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Hi I am using VTK 8.2.0 on windows. I have build the VTK source to build folder. I need to add texture on the image. i have used the attached source code for that. its compiling without any error. When i run the applica…

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## [vtkPlaneWidget vtkProbeFilter speed issue](https://discourse.vtk.org/t/vtkplanewidget-vtkprobefilter-speed-issue/1342)

<div class="topic-metadata">

**Author:** [@Sean](https://discourse.vtk.org/u/Sean)\
**Replies:** 0\
**Last updated:** [July 15, 2019, 8:09pm UTC](https://discourse.vtk.org/t/vtkplanewidget-vtkprobefilter-speed-issue/1342 "2019-07-15T20:09:10Z")

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Hi, The following is the work flow I used to probe a dynamic vector data volume and it output the correct results. However, it is quite slow (lagging) through the rendering. If I delete the line 5 (planeWidget-\>GetPolyD…

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## [Chaning the size of vtkCaptionActor2D caption](https://discourse.vtk.org/t/chaning-the-size-of-vtkcaptionactor2d-caption/1338)

<div class="topic-metadata">

**Author:** [@at123](https://discourse.vtk.org/u/at123)\
**Replies:** 1\
**Last updated:** [July 15, 2019, 6:06pm UTC](https://discourse.vtk.org/t/chaning-the-size-of-vtkcaptionactor2d-caption/1338 "2019-07-15T18:06:48Z")

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Hello, I am using vtkCaptionActor2D to label objects and the text is too big. Is there a way to change the size of the text? Correct me if I am wrong but I am quite sure you have to specify Position and Position2 argum…

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## [VTK Requested modules not available vtkIOFFMPEG](https://discourse.vtk.org/t/vtk-requested-modules-not-available-vtkioffmpeg/1335)

<div class="topic-metadata">

**Author:** [@aneeshikmat](https://discourse.vtk.org/u/aneeshikmat)\
**Replies:** 1\
**Last updated:** [July 15, 2019, 5:05pm UTC](https://discourse.vtk.org/t/vtk-requested-modules-not-available-vtkioffmpeg/1335 "2019-07-15T17:05:28Z")

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Im try to execute this example from VTK, and to do that I most install ffmpeg from this url and all is good, but when I try to build project I get this error: /Downloads/VTK-8.2.0/CMake/vtkModuleAPI.cmake:140 (message…

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## [About ImplictPlaneWidget2.cxx](https://discourse.vtk.org/t/about-implictplanewidget2-cxx/1318)

<div class="topic-metadata">

**Author:** [@1111](https://discourse.vtk.org/u/1111)\
**Replies:** 4\
**Last updated:** [July 14, 2019, 11:52am UTC](https://discourse.vtk.org/t/about-implictplanewidget2-cxx/1318 "2019-07-14T11:52:04Z")

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Hi, I am using the example of ImplicitPlaneWidget2. I want to be able to manipulate this by inputting a 3D image (.raw). Data entry has been corrected as follows. vtkSmartPointer reader = vtkSmartPointer::New(); rea…

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## [Help on Mining Data](https://discourse.vtk.org/t/help-on-mining-data/1331)

<div class="topic-metadata">

**Author:** [@raoni.salomao](https://discourse.vtk.org/u/raoni.salomao)\
**Replies:** 0\
**Last updated:** [July 14, 2019, 1:04pm UTC](https://discourse.vtk.org/t/help-on-mining-data/1331 "2019-07-14T13:04:37Z")

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Hello! I’m new to VTK and started my learning recently. Due to the huge amount of knowledge available for VTK I need some help to guide my studies. I work in a mine and our goal is to draw litology and lab results. For…

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## [Adding a label to an actor in VTK](https://discourse.vtk.org/t/adding-a-label-to-an-actor-in-vtk/1320)

<div class="topic-metadata">

**Author:** [@at123](https://discourse.vtk.org/u/at123)\
**Replies:** 5\
**Last updated:** [July 12, 2019, 8:47pm UTC](https://discourse.vtk.org/t/adding-a-label-to-an-actor-in-vtk/1320 "2019-07-12T20:47:43Z")

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Hi, I am creating a GUI with some VTK renderings. Say I want to render multiple cubes and I want to keep track of the order, I would add a label to each of the cubes signifying the order they were placed. Is it possible…

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## [How to determine if vtkPolyData has lines?](https://discourse.vtk.org/t/how-to-determine-if-vtkpolydata-has-lines/1328)

<div class="topic-metadata">

**Author:** [@lassoan](https://discourse.vtk.org/u/lassoan)\
**Replies:** 0\
**Last updated:** [July 12, 2019, 8:00pm UTC](https://discourse.vtk.org/t/how-to-determine-if-vtkpolydata-has-lines/1328 "2019-07-12T20:00:27Z")

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I’ve just noticed that now vtkPolyData::GetLines() and similar methods always return a valid vtkCellArray. If SetLines has not been called on the object before then some shared dummy array is returned. If this dummy arra…

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## [How to update adjacent vtkPolyData instances after a transformation](https://discourse.vtk.org/t/how-to-update-adjacent-vtkpolydata-instances-after-a-transformation/1325)

<div class="topic-metadata">

**Author:** [@mapsupport](https://discourse.vtk.org/u/mapsupport)\
**Replies:** 6\
**Last updated:** [July 12, 2019, 6:21pm UTC](https://discourse.vtk.org/t/how-to-update-adjacent-vtkpolydata-instances-after-a-transformation/1325 "2019-07-12T18:21:36Z")

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Hi VTK users, Initially I thought applying a transformation to one cell of a vtkPolyData would propagate positional changes to other vtkPolyData’s sharing the same points, but I am mistaken. In the example below there …

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## [adora: being updated](https://discourse.vtk.org/t/adora-being-updated/1283)

<div class="topic-metadata">

**Author:** [@utkarshayachit](https://discourse.vtk.org/u/utkarshayachit)\
**Replies:** 1\
**Last updated:** [July 12, 2019, 6:03pm UTC](https://discourse.vtk.org/t/adora-being-updated/1283 "2019-07-12T18:03:47Z")

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adora is being updated to newer version of Ubuntu 18.04.2 LTS. It will be offline until the upgrade is complete. Expect dashboard issues when the system comes back online until all configuration related issues are addres…

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## [SEHexception when using vtkContour with vtkCutter](https://discourse.vtk.org/t/sehexception-when-using-vtkcontour-with-vtkcutter/1319)

<div class="topic-metadata">

**Author:** [@SergeLalonde](https://discourse.vtk.org/u/SergeLalonde)\
**Replies:** 4\
**Last updated:** [July 12, 2019, 11:55am UTC](https://discourse.vtk.org/t/sehexception-when-using-vtkcontour-with-vtkcutter/1319 "2019-07-12T11:55:09Z")

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I’ve discovered a bug that is probably 2 bugs in one when slicing a 3D scalar field using vtkCutter using the plane implicit function point=(0,0,0) normal=(0,0,1) with vtkContour that causes it to throw an SEHexception. …

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## [Slice extraction of 3D data](https://discourse.vtk.org/t/slice-extraction-of-3d-data/1222)

<div class="topic-metadata">

**Author:** [@1111](https://discourse.vtk.org/u/1111)\
**Replies:** 0\
**Last updated:** [June 27, 2019, 9:25am UTC](https://discourse.vtk.org/t/slice-extraction-of-3d-data/1222 "2019-06-27T09:25:48Z")

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I am a VTK beginner. Currently, I was able to display the 3D data I have using SimpleRayCast. Next, I want to extract any slice (2D image) on that 3D. I want to extract slices on a line in 3D data displayed by SimpleR…

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## [\<?xml version="1.0" encoding="ISO-8859-1"?](https://discourse.vtk.org/t/xml-version-1-0-encoding-iso-8859-1/1304)

<div class="topic-metadata">

**Author:** [@Vaya\_Putra](https://discourse.vtk.org/u/Vaya_Putra)\
**Replies:** 5\
**Last updated:** [July 11, 2019, 6:58pm UTC](https://discourse.vtk.org/t/xml-version-1-0-encoding-iso-8859-1/1304 "2019-07-11T18:58:12Z")

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i got open source simulation, and how to write the output file used \<?xml version="1.0" encoding="ISO-8859-1"?\> i am facing that i can not read that output file write as below PointData DataArray type=“Float64” Na…

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## [Any python GPU computing api compatible with VTK objects?](https://discourse.vtk.org/t/any-python-gpu-computing-api-compatible-with-vtk-objects/1322)

<div class="topic-metadata">

**Author:** [@szx0112](https://discourse.vtk.org/u/szx0112)\
**Replies:** 1\
**Last updated:** [July 11, 2019, 3:17pm UTC](https://discourse.vtk.org/t/any-python-gpu-computing-api-compatible-with-vtk-objects/1322 "2019-07-11T15:17:48Z")

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For example, I have a dense point cloud (100,000 ~ 1000,000 pts), I want to check the intersection with a single outside point. I use the obbTree.IntersectWithLine to loop through all the point in the point cloud while i…

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## [Problem with view update since Intel UHD Graphics 620 driver update](https://discourse.vtk.org/t/problem-with-view-update-since-intel-uhd-graphics-620-driver-update/1224)

<div class="topic-metadata">

**Author:** [@SFischer](https://discourse.vtk.org/u/SFischer)\
**Replies:** 4\
**Last updated:** [July 11, 2019, 6:45am UTC](https://discourse.vtk.org/t/problem-with-view-update-since-intel-uhd-graphics-620-driver-update/1224 "2019-07-11T06:45:18Z")

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Since the update of the intel graphics driver this morning (to driver version 26.20.100.6859) the background color is no more applied to my VTK View and when moving the camera the old shapes are not removed. View with i…

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## [Building a library which depends on VTK: Headers not found.](https://discourse.vtk.org/t/building-a-library-which-depends-on-vtk-headers-not-found/1298)

<div class="topic-metadata">

**Author:** [@sudomakeinstall](https://discourse.vtk.org/u/sudomakeinstall)\
**Replies:** 8\
**Last updated:** [July 10, 2019, 11:23pm UTC](https://discourse.vtk.org/t/building-a-library-which-depends-on-vtk-headers-not-found/1298 "2019-07-10T23:23:09Z")

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All– I’m trying to build a library which depends upon VTK, but am having trouble getting it to find the header files. I’ve put together a minimal example to show the error: $ make Scanning dependencies of target dv-ut…

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## [bug in vtkcutter. It does not return cells only points](https://discourse.vtk.org/t/bug-in-vtkcutter-it-does-not-return-cells-only-points/1309)

<div class="topic-metadata">

**Author:** [@zandarina](https://discourse.vtk.org/u/zandarina)\
**Replies:** 3\
**Last updated:** [July 10, 2019, 8:04am UTC](https://discourse.vtk.org/t/bug-in-vtkcutter-it-does-not-return-cells-only-points/1309 "2019-07-10T08:04:20Z")

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Dear all, I have detected a bug in vtkcutter, i want to get the intersection between a plane and an stl and instead of getting edges what i get is points. If i print the cells returns 0, so i can´t use vtkstripper as it…

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## [Android NDK newer than r18 fails to compile](https://discourse.vtk.org/t/android-ndk-newer-than-r18-fails-to-compile/1310)

<div class="topic-metadata">

**Author:** [@hcwiley](https://discourse.vtk.org/u/hcwiley)\
**Replies:** 4\
**Last updated:** [July 10, 2019, 5:52am UTC](https://discourse.vtk.org/t/android-ndk-newer-than-r18-fails-to-compile/1310 "2019-07-10T05:52:42Z")

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Android is currently not building when using the latest NDK r20 or the previous r19. This means we should look at the CHANGELOG for NDK r19 to determine the breaking change. Compiling fails after compile tools: -- Andro…

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## [Light Serialization](https://discourse.vtk.org/t/light-serialization/1294)

<div class="topic-metadata">

**Author:** [@akaszynski](https://discourse.vtk.org/u/akaszynski)\
**Replies:** 2\
**Last updated:** [July 9, 2019, 7:23pm UTC](https://discourse.vtk.org/t/light-serialization/1294 "2019-07-09T19:23:40Z")

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Hello, I’m trying to serialize a vtk scene using: And it’s, in general, quite buggy. I noticed that there was some work done in VTK on improving this. Specifically: Is there any documentation on the use of thi…

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## [ImageSlicing operation error](https://discourse.vtk.org/t/imageslicing-operation-error/1276)

<div class="topic-metadata">

**Author:** [@1111](https://discourse.vtk.org/u/1111)\
**Replies:** 4\
**Last updated:** [July 9, 2019, 2:09am UTC](https://discourse.vtk.org/t/imageslicing-operation-error/1276 "2019-07-09T02:09:53Z")

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I have run the ImageSlicing sample. However, the following error was displayed. I understand that it is a vtkImageReader2 error, but I don’t know how to cope. please tell me.

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## [VTK 8.2 Build Fails During External Data File Download](https://discourse.vtk.org/t/vtk-8-2-build-fails-during-external-data-file-download/1275)

<div class="topic-metadata">

**Author:** [@Rogermc](https://discourse.vtk.org/u/Rogermc)\
**Replies:** 2\
**Last updated:** [July 8, 2019, 10:47am UTC](https://discourse.vtk.org/t/vtk-8-2-build-fails-during-external-data-file-download/1275 "2019-07-08T10:47:11Z")

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Mac Mini OSX 10.14.5 XCode 10.2.1 My Xcode build of git cloned https://gitlab.kitware.com/vtk/vtk fails at: Generating /Applications\_Packages/VTK/vtk-build/ExternalData/Testing/Data/MotionFX/2\_gears/Big\_Gear\_scale.s…

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## [vtkpython on Ubuntu Xenial/Bionic](https://discourse.vtk.org/t/vtkpython-on-ubuntu-xenial-bionic/1292)

<div class="topic-metadata">

**Author:** [@Ron84](https://discourse.vtk.org/u/Ron84)\
**Replies:** 3\
**Last updated:** [July 8, 2019, 10:45am UTC](https://discourse.vtk.org/t/vtkpython-on-ubuntu-xenial-bionic/1292 "2019-07-08T10:45:19Z")

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Does VTK 6.2 has a vtkpython executable? I’m trying to find it on Ubuntu Xenial. $ sudo apt-get install -y libvtk6.2 libvtk6-dev python-vtk6 $ sudo updatedb $ python -c "import vtk; import sys; print(vtk.VTK\_VERSION); p…

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## [VTK in appveyor](https://discourse.vtk.org/t/vtk-in-appveyor/1293)

<div class="topic-metadata">

**Author:** [@Ron84](https://discourse.vtk.org/u/Ron84)\
**Replies:** 1\
**Last updated:** [July 8, 2019, 10:43am UTC](https://discourse.vtk.org/t/vtk-in-appveyor/1293 "2019-07-08T10:43:54Z")

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I want to use VTK7 in appveyor. I don’t want to build VTK from source, because it takes long time. Are there binaries for Visual Studio 2015 or 2017?

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## [how to use vtk import obj file which contains multiple objects?](https://discourse.vtk.org/t/how-to-use-vtk-import-obj-file-which-contains-multiple-objects/1296)

<div class="topic-metadata">

**Author:** [@Wenye\_He](https://discourse.vtk.org/u/Wenye_He)\
**Replies:** 3\
**Last updated:** [July 8, 2019, 12:42am UTC](https://discourse.vtk.org/t/how-to-use-vtk-import-obj-file-which-contains-multiple-objects/1296 "2019-07-08T00:42:27Z")

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I am using vtkobjreader to import obj and show them in my viewer. One obj file may contain more than one object. How to import the obj file and create multiple objects?

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## [\[java\] cannot work using vtkImageReslice](https://discourse.vtk.org/t/java-cannot-work-using-vtkimagereslice/1285)

<div class="topic-metadata">

**Author:** [@george2008](https://discourse.vtk.org/u/george2008)\
**Replies:** 1\
**Last updated:** [July 7, 2019, 1:53pm UTC](https://discourse.vtk.org/t/java-cannot-work-using-vtkimagereslice/1285 "2019-07-07T13:53:09Z")

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any help about vtk with java ? below java code is from C++/C#, but cannot work. vtkDICOMImageReader reader = new vtkDICOMImageReader(); reader.SetDirectoryName("/home/dicom/series1"); reader.SetDataByteOrd…

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