The X and Y coordinates stored with each trace are used to visualize the position and shape of the data in space. By default the reader produces a VTK StructuredGrid because it preserves the data orientation and shape. The reader has an option to read the data as VTK ImageData, which is useful when the data is parallelepiped that is rotated around the Z axis, as this format is memory efficient and can make data processing faster (See Figure below).
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Support for developing filters, readers, writers in Python and distributing them as plugins has been improved. paraview.util.vtkAlgorithm module provides decorators to expose VTKPythonAlgorithmBase-based VTK algorithms in ParaView. A Python module that provides such decorated algorithms can now be directly loaded in ParaView as plugins.
ParaView includes a reader to read MotionFX CFG files that describe various types of motions on STL geometries. The reader can animate the geometries as described in the CFG file without having to re-read the geometry files on each timestep.
The reader will interpret any files that end with the .series extension as a === meta file. To add support for the meta file for a reader in the readers description, add the extension.series extension to the extension list. For example, for legacy VTK files, the reader now supports .vtk and .vtk.series
PVD reader (vtkPVDReader) now supports selecting which arrays to read. This can be useful to minimize memory foot print and reduce I/O times when reading PVD files by skipping arrays that may not be needed.
vtkSIDataArraySelectionProperty makes it easier to expose array selection properties for filter/readers that support an API to toggle selection status using vtkDataArraySelection instance. See vtkSIDataArraySelectionProperty docs for details.
Thanks to the newly introduced vtkSystemTools::Stat() method, ParaView can now open files larger than 4 GB on Windows with most of the readers. Some readers, especially for the legacy VTK file format reader, were not able to do this before.
The infrastructure for managing user preferences and application settings was refactored from ground up. You can not only only change the configuration options previously exposed through the Settings dialog, but also change the default values for properties for any pipeline module including readers, filters, views and displays.
Every release of ParaView includes several excellent contributions from the community, and this release is no different. The 3.98.0 release includes a completely redesigned 'Memory Inspector' panel that can be used to keep track of memory usage across all ParaView processes, including remote processes (thanks to Burlen Loring at Lawrence Berkeley National Laboratory). Moreover, a new ParaView reader plugin for LANL's GMV file format has been added (thanks to Sven Buijssen at TU Dortmund University) that supports a wider set of keywords than the current one from VisItBridge.
Also, there are updates to support users of the cosmology and windblade formats. For example the MaskPoints filter (used to place glyphs and in other places) was updated with new options that improve random sampling in parallel. Likewise VTK's Gaussian Splatter filter is now exposed in ParaView which makes it easy to visualize point set data with imaging filters. The cosmo and windblade readers have also been revised.
For the 3.10 release, we have added 60 new readers. The new readers include: ANSYS, CGNS, Chombo, Dyna3D, Enzo, Mili, Miranda, Nastran, Pixie, Samrai, Silo, and Tecplot Binary. A full listing of supported readers can be found in the ParaView Users Guide. We also added the ability for developers to create ParaView reader plugins from previously developed VisIt reader plugins. You can find a full guide on how to do this on the VisIt Database Bridge: _Database_Bridge
ParaView now comes HDF5 1.8.5. This enables developers to create readers/plugins for ParaView that use newer versions of HDF5 easily. Also we are now including the C++ and the high level (hl) versions of the libraryfor those who wish to use their newer API.
Among the improvements are two new file formats. The first is a netcdf based reader for MPAS format ocean and atmosphere data sets. The second, available in source form only is a reader plugin that allows ParaView to read multi-resolution wavelet compressed VAPOR data format files. Thanks to John Clyne and Dan Legreca for contributing the VAPOR plugin.
Several new readers have been contributed: WindBlade a reader for wind turbine and fire simulation data, VPIC a reader for particle and cell physics simulation data, and netcdf POP a reader for POP ocean simulation data in a netcdf container format.
Why NETCDF4? Well, NETCDF4 is a fancy type of enclosed file binary format thatallows for faster indexing and data retrieval than SEGY. We try our best toscan in the header information and to make it easy (or easier) to load SEGYin different formats, different configuration (2D, 2D gathers, 3D, 3D gathers).We do all this with the help of segyiowhich is a lower level interface to SEGY. If you stick to our xarray formatof files we also offer utility functions to return to SEG-Y so you can export toother software.
Enter segyio, a fast, open-source library, developed precisely to work with SEGY files. To be fair, segyio has been around for some time, as I very well know from being a member of the Software Underground community (swung), but it was only a month or so ago that I started tinkering with it.
2021-01-28: Voreen 5.2.0------------------------ * Features: o Add Gradient, Vorticity, ValueMap and RescaleFilter to VolumeFilterList o Add id sorting of components created by ConnectedComponentAnalysis o Add new template workspaces featuring the new FlowAnalysis module: feature-vortexcorelineextraction, feature-streamlines o Add PathlineCreator which takes a vector field time series as input o Add Jacobian processor that calculates the Jacobian matrix for 3-channel volumes using central differences o Add VortexCriterion processor to calculate the Q, Delta, and Lambda2 vortex criterion (requires Jacobian) o Add Acceleration processor (requires Jacobian) o Add HelicityDensity processor (requires VolumeVorticity) o Add CorelineCreator and ParallelVectors processor to extract vortex corelines from 3-channel volumes (featured in feature- vortexcorelineextract workspace) o Add StreamlinePredicates processor to filter streamlines (featured in feature-streamlines) o Add EnsembleAnalysis module. This module provides visualization tools for multi-run multi-field spatio-temporal ensemble datasets such as multi-run similarity plots and parallel coordinates. All processors can operate on ensembles which exceed the size of main memory. o Add vtk module. This module adds the vtk library to the voreen framework and provides additional volume readers (netcdf, vti) and writers (nifti, vti) o Add Material and Material Dark design (change in Network Editor Settings), remove glossy highlights o Add OctreeWalker processor and workspace that can replace RandomWalker for operation on out-of-core Volumes (with some restrictions). o Add optional automatic beta-parameter selection in RandomWalker o Add (still experimental) mmap-based BrickPoolManager for volume octrees. This enables support for handling multiple volumes with octree representation in the same workspace. o Allow construction rendering of octrees deeper than 8 levels, allowing for rendering of > 100GB volumes and beyond. o Add support for min/max aggregation functions in octree construction. * Framework/API Changes: o VolumeHalfSample: The output dimensions are now always rounded up if the input dimensions are not divisible by 2. This change was made in order unify the behaviour with octree downsampling o Add interface NumericPropertyBase which is implemented by NumericProperty, IntervalProperty and BoundingBoxProperty. This allows to properly disable property tracking for asynchronous computations. o Rename and rework Flowreen module to FlowAnalysis module. Old workspaces containing respective processors (e.g. StreamlineCreator, StreamlineRenderer3D) might need to be reconfigured. o Remove processors from deprecated module that depend on OpenGL compatibility profile * Bug Fixes/Minor Changes: o Fix bugs in handling of octrees with non-power-of-two dimensions o VolumeList is no longer a DataInvalidationObserver of its volumes. If a representation of any contained volume was deleted, any asynchronous processing of the list would crash. o Fix install target for some Linux distributions by setting RPATH explicitly o Fix simple-glut and simple-qt demo applications o Fix crash in DICOM reader o Fix crash on startup when system has detected less than 4000MB o Fix crash when OpenGL vendor string couldn't be detected (e.g. on some virtual machines) o Fix splitter double-click event forwarding o Fix handling of kernel extent in MorphologyFilter of VolumeFilterList o Allow extent of 0 in VolumeFilterList filter properties o Removal of only remaining volume representation no longer possible o Remove GL -> RAM volume representation converter, which caused crashes in asynchronous processing o Remove Disk -> GL volume representation converter, which created an intermediate RAM representation. This is now handled by the memory manager and also supports Octree -> GL representation conversion. o Fix separate loading of channels from a HDF5 file volume o Fix HDF5 version 1.8 vs. 1.10 compatibility issues (at least when voreen is built with hdf5 v1.10.2 or later) o Output data ranges of filters in VolumeFilterList now influence parameters of subsequent filters o GeometrySource will no longer discard uv coordinates of obj files if no material texture was found o Fix undesired shader rebuilds in GeometryRenderer o Fix rendering of GlMeshGeometry with primitive type set to points or lines when rendered by GeometryRenderer o Add culling option to GeometryRenderer o Fix reading and writing of VolumeMinMax(Magnitude) for multi-channel volumes from and to HDF5 files o Enable camera interaction of GeometryProcessor per default o Fix VolumeListSpacing 'scale' option o Fix arithmetic exceptions when adding POIStorage or POIRenderer2d to the network o Add uncompressed (de-)serialization options to VesselGraphSource and VesselGraphSave. Note: Compression is currently not supported on Windows. o Split the overly complex feature-vesselnessworkanalysis workspace into segmentation-vesselness and feature- vesselgraphextraction o Add VolumeAtomic::copy() o Make VolumeComparison suitable for non-interactive use o Add "cachepath" and "opencl" options to voreentool o Fix bug related to overriding trackballCenterBehaviour when animating cameras o Allow all (not only middle) mouse buttons for scroll-like interactions (i.e., holding a mouse button and moving mouse up/down) o Make gui text of button properties editable o Add start/enqueue invalidation behaviour for some processors (RandomWalker, OctreeWalker) which allows continuous update of (for example) labels while the processor is updating the intermediate result. In contrast to the start/restart behaviour, a change in inputs does not stop the current computation. o Improve performance of the conjugate gradient solver used in RandomWalker and OctreeWalker o Support GeometrySequences in Random-/OctreeWalker o Revamp interaction in segmentation-randomwalker template workspace o Improve OctreeCreator usability and performance o Greatly improve SliceViewer performance on large octree volumes o Fix depth calculation and the interaction of compositing and refinement in SingleOctreeRaycaster o Optionally parallelize reading of to-be-uploaded bricks in SingleOctreeRaycaster 2ff7e9595c
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