vtk

I'm trying to fill in a structured grid with an analytical field, but despite reading the vtk docs, I haven't found out how to actually set scalar values at the grid points or the set the spacing/origin info of the grid. Starting from the code below, how do I associate spatial information with the grid (ie cell 0,0,0 is at coordinates 0,0,0, the spacing is dx in every direction) associate scalar values with each grid point. 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). grid = vtk.vtkStructuredGrid() numPoints =

I'm trying to install VTK module for python, I am however unsuccesful in doing so. I have downloaded a VTK tar-file, but I'm unable to extract it. I'm capable of extracting other tar-files, so there must be something specific with this file I suppose. This is my error: gzip: stdin: invalid compressed data--format violated tar: Child returned status 1 tar: Error is not recoverable: exiting now I hope somebody can help me with this. The answer depends on the operating system you are using. This will be a lot easier if you can find a package or installer for your specific operating system and/or

I'm working on a project that uses a custom subclass of QOpenGLWidget to display some renderings. At the end of the paintGL() method it calls the widget's update() method to trigger a repaint event if it's visible. Now I want to add an additional QVTKWidget to my Ui and I do so by using something like this: QVBoxLayout* layout = findChild<QVBoxLayout*>("layout_simulation"); QVTKWidget* widget = new QVTKWidget(); // Setup arrow vtkSmartPointer<vtkArrowSource> arrowSource = vtkSmartPointer<vtkArrowSource>::New(); [more VTK stuff...] widget->GetRenderWindow()->AddRenderer(renderer); renderer-

I want to extract some data (e.g. scalars) from a VTK file along with their coordinates on the grid then process it in Matplotlib . The problem is I dont know how to grab the point/cell data from the VTK file (by giving the name of the scalar, for instance) and load them into a numpy array using vtk_to_numpy My code should look like: import matplotlib.pyplot as plt from scipy.interpolate import griddata import numpy as np from vtk import * from vtk.util.numpy_support import vtk_to_numpy # load input data reader = vtk.vtkXMLUnstructuredGridReader() reader.SetFileName("my_input_data.vtk") reader

I want to use Mayavi. Situation I use a MacBook Air, with OSX 10.7.3. I use Python 2.7.2 I have virtualenv installed. But I have not used it for this installation. I've manually installed all it's dependencies, including VTK . For VTK , I followed its installation guide and installed the python wrapper. Now if I open a new terminal window and open python, I can import vtk without any error. Problem I try to install Mayavi with the following command: pip install mayavi But the following error occurs: Downloading/unpacking mayavi Running setup.py egg_info for package mayavi build_src building