# Latest

**URL:** https://discourse.vtk.org/latest.md?page=258

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

**Page:** 259

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## [vtkIOGDAL and vtkIOGeoJSON](https://discourse.vtk.org/t/vtkiogdal-and-vtkiogeojson/103)

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**Author:** [@embeddedmz](https://discourse.vtk.org/u/embeddedmz)\
**Replies:** 12\
**Last updated:** [January 31, 2019, 11:17am UTC](https://discourse.vtk.org/t/vtkiogdal-and-vtkiogeojson/103 "2019-01-31T11:17:37Z")

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Hi, I’m trying to build this project GitHub - OpenGeoscience/vtkMap: vtkMap with all options (GDAL and GeoJSON extensions) under Centos 7. The CMake configuration failed : /usr/lib64/cmake/vtk/vtkModuleAPI.cmake:120:…

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## [vtkPolydata : framerate for pointdata update. Possible speedup with vtk-m?](https://discourse.vtk.org/t/vtkpolydata-framerate-for-pointdata-update-possible-speedup-with-vtk-m/170)

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**Author:** [@indridi](https://discourse.vtk.org/u/indridi)\
**Replies:** 0\
**Last updated:** [January 30, 2019, 2:42pm UTC](https://discourse.vtk.org/t/vtkpolydata-framerate-for-pointdata-update-possible-speedup-with-vtk-m/170 "2019-01-30T14:42:52Z")

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Hi, I’m working on a VTK based program that has a fixed vtkPolyData model (points/triangles), with changing point (or cell) data. The polydata is then colored according to the point data field. The data is generated el…

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## [How to let vtkScalarBar showing marks for Text Annotation?](https://discourse.vtk.org/t/how-to-let-vtkscalarbar-showing-marks-for-text-annotation/131)

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**Author:** [@gabri470](https://discourse.vtk.org/u/gabri470)\
**Replies:** 5\
**Last updated:** [January 30, 2019, 3:43pm UTC](https://discourse.vtk.org/t/how-to-let-vtkscalarbar-showing-marks-for-text-annotation/131 "2019-01-30T15:43:53Z")

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Dear Vtk Experts, I am trying to add to a vtkScalarbar tick marks in order to link TextAnnotation objects to actual value in colorbar. I tried in python by using lab.color = (0,0,0) pp = sc.trait\_get('\_vtk\_obj')\['\_vt…

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## [Any way to insert comments in a file created by vtkXMLImageDataWriter](https://discourse.vtk.org/t/any-way-to-insert-comments-in-a-file-created-by-vtkxmlimagedatawriter/161)

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**Author:** [@vnpavanelli](https://discourse.vtk.org/u/vnpavanelli)\
**Replies:** 3\
**Last updated:** [January 29, 2019, 6:24pm UTC](https://discourse.vtk.org/t/any-way-to-insert-comments-in-a-file-created-by-vtkxmlimagedatawriter/161 "2019-01-29T18:24:28Z")

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Is there any way to insert a comment into a .VTI file using the vtkXMLImageDataWriter or other VTK class that generate .VTI? I’m trying to record some information on how I created the VTI data, like the original dataset…

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## [Order of coordinate arrays for RectilinearGrid written by Xdmf3Writer](https://discourse.vtk.org/t/order-of-coordinate-arrays-for-rectilineargrid-written-by-xdmf3writer/147)

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**Author:** [@lugia-kun](https://discourse.vtk.org/u/lugia-kun)\
**Replies:** 2\
**Last updated:** [January 29, 2019, 11:01am UTC](https://discourse.vtk.org/t/order-of-coordinate-arrays-for-rectilineargrid-written-by-xdmf3writer/147 "2019-01-29T11:01:53Z")

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For the following program, which writes a RectilinearGrid dataset with Xdmf3Writer, I found that the coordinate arrays in the geometry type of VXVYVZ are written in order of Z, Y and then X. #include "vtkSmartPointer.h"…

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## [VTK 8.90 missing vtkGUISupportQt\_LOADED](https://discourse.vtk.org/t/vtk-8-90-missing-vtkguisupportqt-loaded/145)

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**Author:** [@amaclean](https://discourse.vtk.org/u/amaclean)\
**Replies:** 11\
**Last updated:** [January 28, 2019, 3:13pm UTC](https://discourse.vtk.org/t/vtk-8-90-missing-vtkguisupportqt-loaded/145 "2019-01-28T15:13:54Z")

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I am building VTKExamples standalone and I have noticed that I am getting the message: “VTKWikiExamples: Not building Qt examples” There is no variable vtkGUISupportQt\_LOADED being set in the VTK build. I changed VTK\_G…

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## [How to specify colors for leaf nodes of a nested vtkMultiBlockDataSet](https://discourse.vtk.org/t/how-to-specify-colors-for-leaf-nodes-of-a-nested-vtkmultiblockdataset/156)

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**Author:** [@Haocheng\_Liu](https://discourse.vtk.org/u/Haocheng_Liu)\
**Replies:** 0\
**Last updated:** [January 28, 2019, 2:35pm UTC](https://discourse.vtk.org/t/how-to-specify-colors-for-leaf-nodes-of-a-nested-vtkmultiblockdataset/156 "2019-01-28T14:35:43Z")

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Hi vtk developers, I have a use case that my data is a composite nested vtkMultiBlockDatasets and I want to specify colors for its subblocks. Ex. Root node: 1 vtkMultiblockDataset(node 0) First level node: 1 vtkMulti…

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## [A good strategy to label a particular point of a vtkPolyData (or display a something near it)](https://discourse.vtk.org/t/a-good-strategy-to-label-a-particular-point-of-a-vtkpolydata-or-display-a-something-near-it/134)

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**Author:** [@embeddedmz](https://discourse.vtk.org/u/embeddedmz)\
**Replies:** 0\
**Last updated:** [January 25, 2019, 4:04pm UTC](https://discourse.vtk.org/t/a-good-strategy-to-label-a-particular-point-of-a-vtkpolydata-or-display-a-something-near-it/134 "2019-01-25T16:04:43Z")

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Hello, There’s this example https://vtk.org/Wiki/VTK/Examples/Cxx/Visualization/LabeledDataMapper of vtkLabeledDataMapper but I don’t want to label all points, is there a way to label only a point with that class ? If …

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## [Unable to build INSTALL using VTK master on Visual Studio 2015](https://discourse.vtk.org/t/unable-to-build-install-using-vtk-master-on-visual-studio-2015/98)

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**Author:** [@Donny\_Zimmerman](https://discourse.vtk.org/u/Donny_Zimmerman)\
**Replies:** 4\
**Last updated:** [January 24, 2019, 4:23pm UTC](https://discourse.vtk.org/t/unable-to-build-install-using-vtk-master-on-visual-studio-2015/98 "2019-01-24T16:23:00Z")

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I am getting the following error in Visual Studio 2015 when trying to build the INSTALL project generated by cmake: CMake Error at Utilities/KWIML/cmake\_install.cmake:36 (file): 101\> file cannot create directory: 1…

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## [Free Biomedical Image Analysis and Visualization 3-day Course](https://discourse.vtk.org/t/free-biomedical-image-analysis-and-visualization-3-day-course/88)

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**Author:** [@cory.quammen](https://discourse.vtk.org/u/cory.quammen)\
**Replies:** 0\
**Last updated:** [January 22, 2019, 4:41pm UTC](https://discourse.vtk.org/t/free-biomedical-image-analysis-and-visualization-3-day-course/88 "2019-01-22T16:41:54Z")

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Kitware has organized a free 3-day biomedical image analysis and visualization course to be held March 12-14, 2019, at Kitware’s Carrboro, NC, USA office. Similar to last year, the course is designed for clinical resear…

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