Vtk Point Data

0 POINT_DATA 128 COLOR_SCALARS texture 2. [email protected] It need to be improved to allow picking quads. 2015年9月21日. In paraview, I am able to read it and make the data to be represented with Point Gaussian with the correct radius (Use Scalar Array, Gaussian Radius = 1). This paper presents an ITK implementation of a robust Finite Element (FE) solver, which can effectively deal with the above difficulties. Introduction to VTK and TVTK TVTK datasets from numpy arrays The general idea 1 Specify the points of the space 2 Specify the connectivity between the points (topology) 3 Connectivity specify “cells” partitioning the space 4 Specify “attribute” data at the points or cells Cell data 10 20 40 30 Points Rectangular cell Triangular cells. VTK has been used on a large 1024-processor computer at the Los Alamos National Laboratory to process nearly a Petabyte of data. map cell data to point data vtkCellDataToPointData is a filter that transforms cell data (i. This attribute is also known by these names:. It seems like that's exactly what we need for this project. vtk ファイルフォーマット. js and OHIF web apps VTK – 27 Nov 19 runs as Jupyter kernel, has embedded web browser, there are experimental projects that make Slicer provide Ipywidgets Jupyter Widgets 7. 1 documentation 3d interactive data visualisation with K3D-jupyter I would like to move a slider and thus affect the Z-coordinate of a 3D-Point, which is part of a line. vtk is the result of transforming the reading point cloud so that it best aligns the. That's why I decided to publish. txt file in notepad and save as a. LAS Reader (vtkLASReader) uses libLAS to create the point cloud data into a VTK format in … Read More. The example reads the points from a vtp file specified as the first command line argument. Bell CS 526 Spring 2004. Definition at line 31 of file vtkPointData. There are various mesh formats available for representing unstructured meshes. When I using “Find Data” and run a python trace however, what I see is the following: # create a new 'Extract Selection' extractSelection1 = ExtractSelection(Input=dataVTI. The method of transformation is based on averaging the data values of all points defining a particular cell. If its not in xyz columns youll have to manipulate it in xls first and save it as a tab delineated. 0 it not, so data. Alternatively, I could use a point locator to find the boundary points again in the original surface. Use the XML VTK format for unstructured meshes (. The plateau is the main building of the engineering faculty, it’s situated in the J. Compatibilidad con versiones word 97 2003 (PARTE I). ERROR Excel Power l Point Word l El formato o la extensión no. GetOutput ()) print ( "There are %s points NOT in the selection" % notSelected. TTK VTK-filter for point merging. But pictures produced by the software is in general raster (maybe I can't use it right but even if I build with gl2ps I can't find a way to export scene to PS or PDF). Philosophy¶. In paraview, I am able to read it and make the data to be represented with Point Gaussian with the correct radius (Use Scalar Array, Gaussian Radius = 1). I want to check if the scalar point data of a dataset has the same data type as T. mp4 How to create Data Entry Form in Excel - Ms Office? - Duration: 5:06. This video features the VLAN configuration of a HP switch V1910-48G. The first value indicates #the order of the point on the. This example reports the cell, cell data and point data contained within a VTK XML or legacy file. We will concentrate on the visualization side of the material and leave the image processing for another time. Author: vtk2jbean Automatic. newInstance() Construct a new vtkPointSet with some initial content. vtr file in the format of vtk legacy file in rectilinear grid. Hello, I'm new with vtk, I would like to read a vtk file that contains coordinates and radii of spheres. meshio can read and write all of the following and smoothly converts between them:. VTK has been used on a large 1024-processor computer at the Los Alamos National Laboratory to process nearly a Petabyte of data. , scalars, vectors, normals, texture coordinates, etc. Outline: Our project uses a 2D lidar on a Robot. such as some simple points and lines). zfp is an open source C/C++ library for compressed floating-point and integer arrays that support high throughput read and write random access. However, vtk numbering starts with 0. ) also are represented. verbose bool. Some tools, for instance paraview, export data arrays always using a floating point data type. The method of transformation is based on averaging the data values of all cells using a particular point. Scalars, on the other hand, can have tuple dimension from 1-4, depending on the type of scalar. There are several drawbacks in using this reader: it does not yet read all point attributes (it reads only intensity, classification, and color) and it is based on a library that is not in active development anymore. tar has been downloaded and extracted,. For example you can do this from the command line: mayavi -d your_point_data. Raw data files are a good format for voxel data, or datasets that are huge. vtr file in the format of vtk legacy file in rectilinear grid. , data specified per cell) into point data (i. Easy visualization of point clouds and geometric primitives based on VTK. Typically field data is associated with the points or cells of a dataset. Within the Pythons script, you set up the data, set up filters and modify visualization settings just as you wish. ply data is in some other part of the vtkPolyData object) and how I can get vtkCurvatures to work with the output of. import vtk as v Filename = 'file. vtkCellArray() # Add points for i in range(0, len(xyz)): p = xyz. helper class to get VTK data object types as string and instantiate them. ) Introduction. The example reads the points from a vtp file specified as the first command line argument. If current loader don’t support, could we have a walk around, Or I can convert the file to any other format which totally support point data? I just try read all the points and colors by self, and render it with a BufferGeometry. , scalars, vectors, etc. ShallowCopy ( extractSelection. The method of transformation is based on averaging the data values of all cells using a particular point. The goal of the VTK examples is to illustrate specific VTK concepts in a consistent and simple format. vtkPolyData(). Contribute to Kitware/VTK development by creating an account on GitHub. The Visualization Toolkit (VTK) is a software system for 3D computer graphics, image processing, and visualization. let bufferGeometry=new THREE. VTK has a vtkPassArrays filter whose documentation is here. We have also updated VTK to ensure that 6 component symmetric tensors are supported across the toolkit. vtkPointData is a class that is used to represent and manipulate point attribute data (e. pointArray (get) Get the array of triangles that triangulate the polygon. The output data. vtk)" or "Meta Image Files(. Two filters are presented, one that smooths scalar field data, and a second one that smooths vector field data. Access to them is through Set and Get methods, with special variations for Boolean data, modal data, strings and vectors. smooth bool. You need to know the name of the array that you want in the output file and whether the array is a Point/Cell/Field Data. On Linux systems, we use mmap/munmap operations for the fastest possible read/write access to the data. py filename That's it and you get a VTK window with interactive display of the data. 2015年9月21日. The setFormat entry for line sampling includes a raw data format and formats for gnuplot, Grace/xmgr and jPlot graph drawing packages. These will help the absolute beginner learn the basics of VTK. More class ttkProjectionFromField TTK VTK-filter which projects a data-set to 2D given two point-data scalar fields to be used as 2D coordinates. The assumption is that users will have VTK installed, as well as whatever development environment they are going to use. mesh data structures and filtering methods for spatial datasets 3D plotting made simple and built for large/complex data geometries PyVista (formerly vtki ) is a helper module for the Visualization Toolkit (VTK) that takes a different approach on interfacing with VTK through NumPy and direct array access. It has a client-server architecture to facilitate remote visualization of datasets, and generates level of detail (LOD) models to maintain interactive frame rates for large datasets. raw module is the lowest representation of data in VTK. VTK has been used on a large 1024-processor computer at the Los Alamos National Laboratory to process nearly a Petabyte of data. Very large datasets often require some reduction like data sampling, cutting, thresholding or cropping for a rapid exploration. Contribute to Kitware/VTK development by creating an account on GitHub. I want to check if the scalar point data of a dataset has the same data type as T. The first article describes how to perform point interpolation using VTK. FieldData is data that is not problem-sized such as cell and point data in the VTK file. flopy model instance. Contribute to Kitware/VTK development by creating an account on GitHub. Ultimately I want to draw a box around an arbitrary section of the mesh and extract the cell and point id's from it. But this will only work with data from the SAME location (The reference point for the coordinates transformation is based on the center point of the default region). The Point Data To Cell Data filter uses the VTK filter vtkPointDataToCellData. reads ovf files keeping vector data from the OOMMF simulation package, extracts the data, optionally adds derived observables (mainly curl and divergence) and; saves the input data and any derived entities into VTK files. However, I require the point ids of the input surface, and not an independent poly with new points and edges. Bell CS 526 Spring 2004. Each cluster has a different color. To start, I just need one, but eventually I'd like to store 3 pieces of data at each point (not a vector, 3 distinct scalars). As the mesh includes both cell and point data VTK will default to using point data for visualisation. I try to prepare data for cnn (convolutional neural network) - metastatis brain cancer MRI. I have a VTK file (unstructured grid) with points and cells. The windows can be interacted by mouse for the first time I display the cloud, if I want to update the cloud, I have to press 'q' and the. All geometry is extracted and appended, but point and cell attributes (i. vtkDataSetMapper() mapper. VTK is a software system for computer graphics, visualization and image processing. 0 the reader option ‘Legacy VTK files’ is not an option. 0 it not, so data. Get pixel values from image. The chart data is being fetched. If I type the command mesh. meshio can read and write all of the following and smoothly converts between them:. Visualization Interpreting data in visual terms Data is too complex Too much data Not a substitute for statistical analysis, sampling, filtering and other quantitative methods Make use of human sensory abilities Pattern Recognition Trend discovery Graphs are one kind of visualization We are interested in more complex data Multi-dimensional. The output data. Very large datasets often require some reduction like data sampling, cutting, thresholding or cropping for a rapid exploration. It serves to encapsulate instance variables and methods for visualization network execution, as well as representing data consisting of a field (i. ShallowCopy ( extractSelection. Cell data and point data: Each VTK dataset is defined by vertices and cells, explicitly or implicitly. VTK is mainly consists of C++ class library and several interpreted interface layers. Color mapping is a scalar visualization technique that maps scalar data to colors. But this will only work with data from the SAME location (The reference point for the coordinates transformation is based on the center point of the default region). 0 Texture ASCII DATASET STRUCTURED_POINTS DIMENSIONS 128 1 1 ASPECT_RATIO 1 1 1 ORIGIN 0. Two filters are presented, one that smooths scalar field data, and a second one that smooths vector field data. Philosophy¶. All geometry is extracted and appended, but point and cell attributes (i. In the example above, you'll end up with a single VTK file with three data arrays of the same number of grid points. It is a special VTK data structure in the collection of 3D data structures provided by VTK. Returns an object with { minimum, maximum, average, variance, sigma } of the imageData points found within the provided worldBounds. Hi All, This will be my first post, I am new to VTK so I apologize for any Noobie mistakes. These examples have been subject to peer review and revision over the years. Hello, I'm new with vtk, I would like to read a vtk file that contains coordinates and radii of spheres. The first two represent the reference and reading respective point clouds and are identical to cloud_0. The format of this is normal xml, but with a section AppendedData where there is an underscore followed by binary data, the xml describes where each of the data sequences start and end in this data. , data specified at cell points). (JE009A) » TUTORIAL: http://techexpert. Loading scalar data: the heart. These are meant to represent points where the value of the numerical solution is known in space (quadrature points for a finite element, for example). Two filters are presented, one that smooths scalar field data, and a second one that smooths vector field data. You will learn how to use VTK to create custom visualization tools to analyze a variety of data types. api TBD Source index. One solution is to write out a Python script from your program. DICOM in Python: Importing medical image data into NumPy with PyDICOM and VTK Posted on September 8, 2014 by somada141 I’ll be showing how to use the pydicom package and/or VTK to read a series of DICOM images into a NumPy array. Likewise, for cell-associated arrays (cell array) the number of tuples is expected to match the number of cells. VTK Pipeline Data processing in VTK follows the data-flow paradigm. What is the simpliest way of keeping my associated information (which can be float, double, string arrays) when I convert a GIS format into a vtkPolyData + ???(for. Contribute to Kitware/VTK development by creating an account on GitHub. The class vtkExtractIntPointsAsPolyData creates a new vtkPolyDataSet which contains only the integration points as VTK_POLY_VERTEX for each cell in the global coordinate system with all the integration point data (scalar, vector and tensor arrays). If I run the command mesh. The VTK user guide is not very clear about legacy formats only accepting big_endian. As the mesh includes both cell and point data VTK will default to using point data for visualisation. The Visualization Toolkit (VTK) is a software system for 3D computer graphics, image processing, and visualization. We will concentrate on the visualization side of the material and leave the image processing for another time. Bell CS 526 Spring 2004. It need to be improved to allow picking quads. A small VTK tutorial. The pcl_io library contains classes and functions for reading and writing point cloud data (PCD) files, as well as capturing point clouds from a variety of sensing devices. Introduction to VTK and TVTK TVTK datasets from numpy arrays The general idea 1 Specify the points of the space 2 Specify the connectivity between the points (topology) 3 Connectivity specify "cells" partitioning the space 4 Specify "attribute" data at the points or cells Cell data 10 20 40 30 Points Rectangular cell Triangular cells. This part contains the single line: # vtk DataFile Version x. Does Paraview or Visit have any filters to draw a smooth surface for a set of points? Stack Exchange Network Stack Exchange network consists of 175 Q&A communities including Stack Overflow , the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. tolist() point_id = points. For now, what I do, is a type size comparison :. It is a special VTK data structure in the collection of 3D data structures provided by VTK. newInstance() Construct a new vtkPointSet with some initial content. The points lie on spheres that are randomly placed. Simple Legacy Formats The legacy VTK file formats consist of five basic parts. If your source data contains cells (not just a point cloud) then import those cells into VTK, too. , data specified per cell) into point data (i. Later we will see actually how to save such data Gregorio Pellegrini VTK format for FreeFem++ output data June 26, 2014 6 / 20. データ可視化ライブラリ VTK を Python で使うメモ。 環境. vtk output. Dynamically Add and Render Points using vtkPolyData. InsertCellPoint(point_id) # Create a poly data object polydata = vtk. VTK has typedefs for basic types (float, int, double, etc. Each process may have zero or more inputs and. The simple command is python xyzviewer. grid = vtk. With vtki, we directly wrap VTK’s Python objects providing a “pythonic” interface back to the original VTK objects to make the process of editing points and data straightforward, make many common filters easily accessible, and preserve the original VTK data structure such that the objects can be passed to any external routines that accept. Each of the examples varies only in the lookup table. 1 0 CELL_DATA 1 POINT_DATA 4 FIELD FieldData 1 nodal 1 4 float 0 1 1. Remark These keywords allow the vtk-reader to link the data either with CELLS and or with POINTS. single polygonal dataset. The file format used by Paraview and VTK is quite simple, but there are many subformats that may lead to confusion. The VTK user guide is not very clear about legacy formats only accepting big_endian. Compatibilidad con versiones word 97 2003 (PARTE I). gdcmviewer is the simple tool that show how to use vtkGDCMImageReader. The XML formats support random access, parallel I/O, and portable data com-pression and are preferred to the serial VTK file formats whenever possible. 1 KB; Introduction. This video features the VLAN configuration of a HP switch V1910-48G. , data specified at cell points). 0 vtk output ASCII DATASET STRUCTURED_GRID DIMENSIONS 2 2 1 POINTS 4 float 0 0 0 1 0 0 0 1 0 1. I think I understood the workflow up until select point. concrete dataset represents vertices, lines, polygons, and triangle strips. In a $1D$ normal distribution case this would be the area under the "two tails" of the PDF. smooth bool. abstract class to specify dataset behavior. helper class to get VTK data object types as string and instantiate them. VISUALIZATION INTRODUCTION erhtjhtyhy JOE INSLEY Lead, Visualization & Data Analytics § 2D or 3D geometric object to represent point data § Location dictated by coordinate - 3D location on mesh simulation data to VTK data model § Write a Bridge to define API entry points for simulation. For multiple data array entry, they must have the same number of grid points. Although VTK is a C++ framework, in a higher level, it follows a programming paradigm other than Object Oriented. I have a VTK file (unstructured grid) with points and cells. The code of the Point of Delivery for an ACTIVITY, event or item in a SERVICE PROVIDED UNDER AGREEMENT. All point data must use 3 coordinates. Commit Line Data; 19286d7c: 1: cmake_minimum_required (VERSION 2. These will help the absolute beginner learn the basics of VTK. In some cases derived data products such as raster and Google Earth Image overlays are also available. Recently, I was required to work with VTK, an interesting (and powerful) library for visualization. The VTK series allows you to choose time based or depth based data line spacing on the system setup screen. I use VTK to display a point cloud and update it in a loop. I have attached the file to this email. Update notSelected = vtk. , scalars, vectors, normals) are extracted and appended only if all datasets have the point and/or cell attributes available. Enumeration defining the vtk data types. Once the tarball PolygonalSurfacePointPlacer. 4 0 2 3 1 is five digits => // 470x5 = 2350 POINT_DATA 938 // here follows the data specified at the 938 points SCALARS my_scalars float 1 // first scalar. point coordinates plus the cell interpolation functions. Both coordinate points and cells (= the area between the points) are defined in the file, so data values can be assigned either to points or to cells. Unable to read all scalars from Cell Data in a VTK file. I need to split 3d vtk picture into series of masks and find appropriate dicom file for each mask. The aim of this tutorial is to give you an idea about the visualization pipeline in VTK, how data is represented in VTK, and how to write your own VTK code. import vtk from numpy import * # We begin by creating the data we want to render. The simple command is python xyzviewer. The windows can be interacted by mouse for the first time I display the cloud, if I want to update the cloud, I have to press 'q' and the VTK - update vtkPolyData in renderWindow without blocking interaction. vtkPointData is a class that is used to represent and manipulate point attribute data (e. py filename. Here’s a short 9 sec demo of the 3D display. ParaView (VTK) provides two readers for point cloud data. In other cases that you will face in the future, you will have to preprocess the data with your own classes and then feed the data to VTK. TVTK is implemented mostly in pure Python (except for a small extension module). More class ttkProgramBase Base VTK editor class for standalone programs. XML multi-block data files are meta-files that point to a list of serial VTK XML files. I have a 3D volumetric data segmented from CT image, and want to directly convert that 3D volumetric data into vtk 3D mesh data (perhaps, vtkPolyData something like that). Inspired by the vpython manifesto “3D programming for ordinary mortals”, vtkplotter makes it easy to work wth three-dimensional objects, create displays and animations in just a few lines of code, even for those with less programming experience. let bufferGeometry=new THREE. For example, 3-tuple data array can be assigned to a vector, normal, or points object, but not a tensor object, which has a tuple dimension of 9. Allows user-defined format elements. setOutput(vtkUnstructuredGrid id0) Get the output of this source. The example reads the points from a vtp file specified as the first command line argument. Although VTK is a C++ framework, in a higher level, it follows a programming paradigm other than Object Oriented. getPointData(). The topology of the dataset structure is defined by cell types and how the cells share their defining points. Section 1: Contains the file version and identifier. vtk, and test_data_out. vtkPoints() # Create the topology of the point (a vertex) vertices = vtk. The first three lines of a VTK data files (sometimes referred to as a legacy VTK file) will always have the form # vtk DataFile Version 3. Could you please help me and clarify how I can. SetDimensions(numPoints, numPoints, numPoints). There are basically two types of sources: Readers, which read data out of files in a wide variety of formats, and Independant Sources, which generate data flow based on input parameters. I have for each patient series of dicom files (slices) and vtk file (points and polygons). txt file in notepad and save as a. gdcmviewer is the simple tool that show how to use vtkGDCMImageReader. let bufferGeometry=new THREE. vtu # compress the mesh file meshio-decompress input. vtr file in Paraview 4. The Visualization Toolkit includes functions that can read and write graphics information in a variety of formats. In this tutorial I will give a quick introduction to VTK and its pipeline architecture, and go on to discuss a real-life 3D visualization example using data from a simulated fluid in an impeller pump. VTK library is written in C++ however it provides interfaces to the scripting languages Tcl, Python and Java. Scribd is the world's largest social reading and. VTK EXAMPLES | The Visualization Toolkit is a large, powerful C++ library for 3D visualization. We will concentrate on the visualization side of the material and leave the image processing for another time. Bell CS 526 Spring 2004. Introduction to VTK and TVTK TVTK datasets from numpy arrays The general idea 1 Specify the points of the space 2 Specify the connectivity between the points (topology) 3 Connectivity specify “cells” partitioning the space 4 Specify “attribute” data at the points or cells Cell data 10 20 40 30 Points Rectangular cell Triangular cells. This method needs to be called. # vtk DataFile Version 3. Data Point Capital is a venture capital firm focused on the internet. txt file then save as a. abstract class to specify dataset behavior. vtkPolyData() # Set the points. grid = vtk. ReadAllScalarsOn() reader. Note that I was getting problems with the point IDs, because my data file's IDs started with 1. There are basically two types of sources: Readers, which read data out of files in a wide variety of formats, and Independant Sources, which generate data flow based on input parameters. The problem is that when I load my FLUENT data into VTK convert it to point data and then write it as a vtu file and then examine it in ParaView there are no points that have zero velocity, the points are there, there is just nowhere where its zero. vtk ファイルは、形状と属性を含みます。ファイル名の接尾子には ". The template types are T_CPP for the c++ data type and T_VTK for the VTK data type. OpenGeoSys expects the 'MaterialIDs' cell data array to have int data-type. By the way, there is a very simple trick for converting data to big_endian in fortran using the "convert" parameter in the "open" statement. One of the biggest recent changes in high-performance computing is the increasing use of accelerators. vtkPassArrays() pa. This is a simple volume of 3D data (32 x 32 x 12 points) with scalars at each point (the points are equally spaced). Recently, I was required to work with VTK, an interesting (and powerful) library for visualization. Contribute to Kitware/VTK development by creating an account on GitHub. These examples have been subject to peer review and revision over the years. It seems like that's exactly what we need for this project. void: vtkUnstructuredGridSource. This is a simple volume of 3D data (32 x 32 x 12 points) with scalars at each point (the points are equally spaced). This article discusses more involved topics in VTK, each which address a use-case for the 3D environment - complex models, terrains, and sensor visualizations. It consists of a C++ class library and several interpreted interface layers including Tcl/Tk, Java, and Python. newInstance() Construct a new vtkPointSet with some initial content. It was primarily. There are also examples specifically to. In the same way, Dataset descriptors are converted to the appropriate VTK attributes when exporting a point cloud. Image data can represent at typical 2D image, but also, a 3D volume. PCL Visualization overview. ply' in the VTKData package: GetPointData()->GetNumberOfTuples() is zero Despite the point data being apparent empty, the PLY works and the OBJ doesn't. Setting up VTK and ITK environments for Ubuntu. The topology of the dataset structure is defined by cell types and how the cells share their defining points. The code of the Point of Delivery for an ACTIVITY, event or item in a SERVICE PROVIDED UNDER AGREEMENT. Hello, I meet issue, how to load the vtk point structure data. Mirror of Visualization Toolkit repository. Control how the filter works with scalar point data and cell attribute data. It is often useful to convert this format to a standard VTK point cloud or mesh format before processing. This is a VTK data file, specifically the unstructured gid type, for which the. vtu) See here for a guide: http://www. To start, I just need one, but eventually I'd like to store 3 pieces of data at each point (not a vector, 3 distinct scalars). vtkStructuredPointsWriter - write vtk structured points data file. When describing the cells in terms of point indices, the points must be indexed starting at 0. I want to do the same with vtk and Python if possible. 3d Point Cloud Processing In Python. This video features the VLAN configuration of a HP switch V1910-48G. That’s it and you get a VTK window with interactive display of the data. These will help the absolute beginner learn the basics of VTK. Contribute to Kitware/VTK development by creating an account on GitHub. mesh data structures and filtering methods for spatial datasets 3D plotting made simple and built for large/complex data geometries PyVista (formerly vtki ) is a helper module for the Visualization Toolkit (VTK) that takes a different approach on interfacing with VTK through NumPy and direct array access. [prev in list] [next in list] [prev in thread] [next in thread] List: vtkusers Subject: [vtkusers] Point Data of Polydata From: rahul indoria ::Ptr pointCloud(new pcl. [prev in list] [next in list] [prev in thread] [next in thread] List: vtk-developers Subject: Re , "Add Miscellaneous Data to Points in a polydata",. $1-(CDF(x)-CDF(\mu-x))$. 2015年9月21日. VTK can perform parallel processing, and it can render scientific data in a web browser. I have a data set of type vtkUnstructuredGrid, and I need to read and write scalar values from individual points within that data set. The Visualization Toolkit (VTK) is a software system for 3D computer graphics, image processing, and visualization. The simple command is python xyzviewer. Outline: Our project uses a 2D lidar on a Robot. I have a set of points, among which a subset needs to have the same color in vtk file format. Browse the sections below to learn more. ParaView & Visit are end-user applications based on VTK, with support for: Parallel Data I/O Parallel Processing Parallel Rendering. Raw data files are a good format for voxel data, or datasets that are huge. Both coordinate points and cells (= the area between the points) are defined in the file, so data values can be assigned either to points or to cells. ReadAllScalarsOn() reader. # vtk DataFile Version 1. It consists of a C++ class library and several interpreted interface layers including Tcl/Tk, Java, and Python. By the way, there is a very simple trick for converting data to big_endian in fortran using the "convert" parameter in the "open" statement. VTK-m gives us the software development tools to engineer the necessary multi-/many-core. VTK & ParaView Ray Gasser [email protected]