portnet.blogg.se - Making 2d plots paraview

#MAKING 2D PLOTS PARAVIEW SOFTWARE#
#MAKING 2D PLOTS PARAVIEW PLUS#

# Other attribute arrays can be set similarly View.SetAttributeArrayStatus(i, vtkDataObject.POINT, "Momentum", 1) View.SetAttributeArrayStatus(i, vtkDataObject.POINT, "Density", 1) Here, we'll request the Density point data array # By default, no arrays will be passed to the client. We want to unset any of the arrays requested Print "Memory size:", dataObject.GetActualMemorySize(), "kilobytes" # else you can do through the Python wrapping. You can query the size of the data, for instance, or do anything # The data object has the same data type and structure as the data object that # You need to use GetVisibleDataObjectForSetup(i) in setup_data to access the data object.ĭataObject = view.GetVisibleDataObjectForSetup(i)

Here’s an example of this function that was used to generate the image above: def setup_data(view):įor i in xrange(view.GetNumberOfVisibleDataObjects()): Through the view object, the current datasets loaded into ParaView may be accessed. The “view” argument is the VTK object for the Python View. The Python script for the view must define a function called setup_data(view). The overall structure of the data object, however, including cell connectivity, point positions, and hierarchical block structure, is always transferred to the client. For that reason, we have provided a mechanism to select which data arrays to transfer to the client. This component will typically set up one or more matplotlib subplots, convert data from VTK to a form that can be passed to matplotlib, and plot the data.īecause a dataset residing on the ParaView server may be large, transferring all the data to the client may not be possible or practical. It has access to the complete data object gathered from the data server nodes, but only the arrays requested in the first function. This function runs only on the ParaView client. The second function is where you put matplotlib rendering commands. It provides access to the underlying data object on the server so that you can query any aspect of the data using the Python-wrapped parts of VTK and ParaView. This function runs only on data server processes. These arrays can be point data, cell data, field data, and table row data. In the first function, you request which arrays you would like to transfer to the client for rendering (at present, all rendering in this view takes place on the client, even in client-server mode). The view requires that the Python script where the plotting occurs define two functions. All the Python bindings for ParaView and VTK that are available in the Python scripting module are available from within the script, making it possible to plot any array from just about any dataset that can be loaded into ParaView. The Python View has a single property, a Python script that contains the matplotlib rendering commands. The bottom subplot is a matplotlib histogram of the same density data. The top subplot in the Python View is a matplotlib scatterplot of momentum magnitude versus density. Below is a screenshot of the new Python View (right) next to a 3D rendering (left) of the momentum vector glyphs in the bluntfin.vts example dataset. This new view will be available in the ParaView 4.1 release. We have recently integrated matplotlib into ParaView as a new type of view called a “Python View”. You will see another 2D plot view open up.Matplotlib is a Python module that can be used to make publication-quality plots. This will take some time depending on how many time steps you have.

And then choose menu “Filter->Data Analysis->Plot selection over time”.

Click the button “Select points on”, i.e.

Now, for example we are interested to plot the data over time from a particular point.

To view cut plane, click the icon “Slice”, and click Apply.

But since we want to load all, click the upper most line, i.e.

#MAKING 2D PLOTS PARAVIEW PLUS#

If you click the plus sign you will be able to select a particular time step data. Go the folder where the data files are located, you will see Etot…vtk, with a plus sign on the left.The files are stored in this convention, , where the numbers are the time steps. In my current project I have a time sequence data which is stored in different VTK legacy files.

#MAKING 2D PLOTS PARAVIEW SOFTWARE#

Paraview is a nice visualization software and it is equiped with a lot of tools to analyze the data. Oka Kurniawan Institute of High Performance Computing.