ParaView | VTK-based Data Analysis and Visualization Application | Data Visualization library

by Kitware C++ Version: v5.11.1 License: Non-SPDX

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kandi X-RAY | ParaView Summary

ParaView is a C++ library typically used in Analytics, Data Visualization applications. ParaView has no bugs, it has no vulnerabilities and it has medium support. However ParaView has a Non-SPDX License. You can download it from GitHub.

[ParaView][] is an open-source, multi-platform data analysis and visualization application based on [Visualization Toolkit (VTK)][VTK]. The first public release was announced in October 2002. Since then, the project has grown through collaborative efforts between [Kitware Inc.][Kitware], [Sandia National Laboratories][Sandia], [Los Alamos National Laboratory][LANL], [Army Research Laboratory][ARL], and various other government and commercial institutions, and academic partners. [ParaView]: [VTK]: [Kitware]: [Sandia]: [LANL]: [ARL]:

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ParaView has a medium active ecosystem.

It has 1004 star(s) with 375 fork(s). There are 84 watchers for this library.

It had no major release in the last 6 months.

ParaView has no issues reported. There are 6 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of ParaView is v5.11.1

Quality

ParaView has 0 bugs and 0 code smells.

Security

ParaView has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

ParaView code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

ParaView has a Non-SPDX License.

Non-SPDX licenses can be open source with a non SPDX compliant license, or non open source licenses, and you need to review them closely before use.

Reuse

ParaView releases are not available. You will need to build from source code and install.

It has 135226 lines of code, 2291 functions and 1184 files.

It has high code complexity. Code complexity directly impacts maintainability of the code.

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ParaView Examples and Code Snippets

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Community Discussions

Trending Discussions on ParaView

Are there groups of entities in VTK format?

VTK file (*.vtu) not being correctly read

Add displacement data to mesh points

How to save triangulation object(Constrained_Delaunay_triangulation_2) to file(vtk, vtu, msh etc) in CGAL

Why is there no color in the scene I exported with vtkVRMLExporter

How to mirror a VTK 3D mesh saved on a .vtp file?

PyVista `add_volume`: Garbled Output & Slower than ParaView

Paraview python script not saving csv file during automation

Problem in generating a vtk file with UNSTRUCTURED_GRID and reading it in Paraview

How to render a simple 2D vtkImageData object in Paraview?

QUESTION

Are there groups of entities in VTK format?

Asked 2022-Mar-28 at 10:08

I would like to use paraview for postprocessing of FE models. However, I am missing an essential feature in VKT format, which probably exists, but I don't know its name or how it is implemented in VTK.

In FE models it is common to group some nodes/elements. Depending on the program these are named differently: Groups, Sets, Selections, ... . Basically they are just an array with the reference numbers for quick selection. For example: A tube could have the selections "inlet", "outlet" and "wall". Is there any possibility to store such a selection in VTK format? The goal would be to be able to apply filters only to this node selection, for example to get results only from certain nodes.

By the way, I do the export of my calculated data to VTK on my own, because my FE program does not have native support for the VTK format. So I am more interested in the required data structure than in a workflow for program XY.

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ANSWER

Answered 2022-Mar-28 at 10:08

In VTK, you cannot apply filters only on subset of a data object. What you need is to be able to split your data into several ones for processing.

I see two ways for that:

create one object per selection and then use a MultiBlockDataSet with one part per block. Then you can use vtkExtractBlock to apply filters on a specific part.
Add a PartId array to your data. Then you can use thresholding to extract the region of interest.

I advise to use 1. as it has more semantic.

Source https://stackoverflow.com/questions/71605905

QUESTION

VTK file (*.vtu) not being correctly read

Asked 2022-Mar-06 at 14:30

I'm having trouble with a VTK file I've created not being loaded by ParaView. The file looks ok and I can't seen any obvious errors but ParaView throws the following warnings when trying to view the data.

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ANSWER

Answered 2022-Mar-06 at 14:30

The answer for anyone who may come across this is rather trivial - the attribute should be NumberOfComponents. Note the capitalisation!

Source https://stackoverflow.com/questions/71361900

QUESTION

Add displacement data to mesh points

Asked 2022-Jan-20 at 01:51

Suppose I have a mesh with Tet4 elements. The mesh has a total of 1695 nodes and 7726 elements. Now I can use pyvista to create the undeformed mesh like this:

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ANSWER

Answered 2022-Jan-19 at 10:54

I'm not familiar with ParaView, but it looks like you want to add vector-valued point data to your mesh. Many of PyVista's examples implicitly do that, but this is also mentioned in the Basic API Usage page of the documentation.

Assuming you have an array called displacements with shape (mesh.n_points, 3) (i.e. one 3-dimensional vector for each point in the mesh) where the vectors are in the same order as the mesh points, you just have to do

Source https://stackoverflow.com/questions/70764111

QUESTION

How to save triangulation object(Constrained_Delaunay_triangulation_2) to file(vtk, vtu, msh etc) in CGAL

Asked 2021-Dec-18 at 23:15

Created simple program based on 8.3 Example: a Constrained Delaunay Triangulation. And just wanna to export it to some common mesh file format like vtk, msh etc, to be able open it in GMesh or ParaView. To do so I found that most straightforward way is to use write_VTU. And at the beginning and at the end of example code I added next:

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ANSWER

Answered 2021-Dec-17 at 08:16

As documented here the face type of the triangulation must be a model of DelaunayMeshFaceBase_2. You can for example use Delaunay_mesh_face_base_2 like in this example.

Source https://stackoverflow.com/questions/70383755

QUESTION

Why is there no color in the scene I exported with vtkVRMLExporter

Asked 2021-Dec-06 at 15:31

I want to export the result, but there is always no correct color after opening it with ParaView. If you have any other suggestions please let me know.

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ANSWER

Answered 2021-Dec-06 at 15:31

Please note the difference between two (VTK ?) concepts: Exporter and Writer (and their counterpart Importer and Reader)

Exporter/Importer

An exporter is intended to store the whole scene, in term of visible objects, in a file. It takes into account each object, the background, current colors etc ... Importing the resulting file should provide a same-looking scene. But in the process you can lose a lot of info, not visible at the export time

Writer/Reader

They are intended to write only one but full dataset on the disk, and is unrelated to any kind of visualization properties. It contains usually a mesh and associated data but no background color or such things.

Your problem

You are mixing both approach. ParaView use the Reader paradigm but you use the exporter one. That is probably why you cannot open the file with the multiple actors version, and why you do not have color now.

Possible solutions

First way is to make sure the colors you want are correctly rendered. If yes, maybe the export / reader will work.
Another possibility is to use a writer instead of the exporter. There is no vtkVRMLWriter (from my quick search at least) but you can use any format supporting polygonal meshes (as the vtkXMLPolyDataWriter )
The last option, the cleaner from my point of view, is to keep separate objects: you can get rid of the vtkPolyDataAppend and replace it with vtkGroupDataSetsFilter and write it (for instance) with vtkXMLMultiBlockDataWriter)

Source https://stackoverflow.com/questions/70245850

QUESTION

How to mirror a VTK 3D mesh saved on a .vtp file?

Asked 2021-Sep-22 at 07:25

I'm trying to spatially mirror (along the 'X' direction) geometry data in a couple of .vtp files, and currently facing an issue in Paraview. I am able to use the Reflection filter to achieve what I want, but for some reason I am unable to export back it to a .vtp file. Apparently the output of the filter is of type UnstructuredView, while the original dataset is in Geometry (PolyData).

I could not find any additional filter that will convert the point dataset to some type whose geometry I can export as .vtp. Is there a quick and clean way to achieve this, or am I completely off the mark, and will need to use the C++/Python API to implement it?

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ANSWER

Answered 2021-Sep-22 at 07:25

You can use the Transform filter with a scale of -1 on the axis you want.

Note that you can transform an Unstructured Grid into a Polydata with the Extract Surface filter, as the main difference between both dataset is that polydata is only 2D cells whereas Unstructured is 3D.

Source https://stackoverflow.com/questions/69276079

QUESTION

PyVista `add_volume`: Garbled Output & Slower than ParaView

Asked 2021-Sep-16 at 17:40

Questions:

Update 14-SEP-2021: Simplified problem even further to a smaller MRE. After some analysis, it doesn't seem Qt threading is the culprit, so corresponding Qt code was removed.

pyvista does not plot my volume along the correct axis and the output is garbled. ParaView on the other hand plots things properly. How can I fix this?

(NOTE: I cannot share the actual data because it is confidential. However, below you can see pyvista orients my data along the z-axis, when in fact it should be along the x-axis, and that it is garbled. I show the bounding box in ParaView.

The results are the same regardless if I use the fixed_point vs. smart volume mappers. I use fixed_point since I am on Windows.)

pyvista:

ParaView:

Plotting volumes in pyvista is much slower than in ParaView. Is there some way I can make this faster?

The time for my code with pyvista vs. ParaView is
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ANSWER

Answered 2021-Sep-16 at 17:40

In pyvista version 0.32.1, the lines of code in pyvista/plotting/plotting.py function add_volume here are problematic:

Source https://stackoverflow.com/questions/69080189

QUESTION

Paraview python script not saving csv file during automation

Asked 2021-Sep-08 at 14:46

I would to like automate the plot over line filter with three cases (having different grid size).I started “start trace” in paraview and all the actions are recorded in a python script. When I run "pvbatch" command, I could get plot1.csv only in last folder (i.e. case_3) but not in all three folders.

Could anyone please let me know why this script is not saving csv file in all folders. ?

Thank you very much

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ANSWER

Answered 2021-Sep-08 at 14:46

You for loop is badly formed, you are creating three readers in the same variable and then use it.

Put your whole pipeline in the loop

Source https://stackoverflow.com/questions/69097552

QUESTION

Problem in generating a vtk file with UNSTRUCTURED_GRID and reading it in Paraview

Asked 2021-Aug-14 at 17:03

I have this .vtk file that I have created for a single quadratic hexahedron element (cube):

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ANSWER

Answered 2021-Aug-14 at 17:03

In the first line of the cell data, which comes after the definition of the point data, the entry CELLS 1 20 should be replaced with

Source https://stackoverflow.com/questions/68776437

QUESTION

How to render a simple 2D vtkImageData object in Paraview?

Asked 2021-Aug-10 at 15:12

I would like to use Paraview to plot simple 2D meshes with either different colors per cell or different colors per vertices. As far as I can tell, the Paraview documentation does not explain how to Show() a user-defined VTK object.

I read from the Paraview guide how the VTK data model works and from the VTK User's Guide how to generate a vtkImageData object.

From what I could gather, the following code should yield a vtkImageData object of a 10x5 2D mesh spanning [0.;10.]x[0.;5.] with 50 blue elements.

But now I don't know how to actually plot it in Paraview.

...

ANSWER

Answered 2021-Aug-03 at 17:51

ProgrammableSource is what you want to use. See this example or this

Source https://stackoverflow.com/questions/68627489

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