The root of this hierarchy is accessed via a PWGM_HGRIDMODEL handle. The imported grid data is created in a hierarchy. For more details, see the The Pointwise Grid Model API / Using C / Data Types / PWGM-API Opaque Data handle Types section on the Pointwise Plugin SDK Modules page. You can also extract meta information from a handle using various Pointwise Grid Model API macros. For example, all functions beginning with PwDom take a PWGM_HDOMAIN as their first parameter (the domain’s this pointer). The Pointwise Grid Model API uses a function naming scheme in which the name’s prefix reflects the entity handle being accessed. The Pointwise Grid Model API supports six handle types for use with unstructured grids:Įach handle type has one or more Pointwise Grid Model API functions that are used to query or manipulate the entity that the handle represents. For those of you familiar with C++, a handle can be considered the Pointwise Grid Model’s equivalent of a C++ this pointer. Handles are used to uniquely identify a Pointwise Grid Model entity or element without using pointers. FIELDVIEW UNSTRUCTURED PARAVIEW CODEThrough out the code examples in this post, you will see the use of Pointwise Grid Model API data types called handles. The import of structured grid data will be covered in part 3 of this series. In this post, I will focus on the import of unstructured grid data. To properly import grid data, you need a thorough understanding of the Pointwise Grid Model API. The addition of BC and VC support in future releases will be guided by user feedback. That is, the import of boundary conditions and volume conditions is not yet supported. At this time, only the import of raw grid data is supported. The Pointwise Plugin SDK now includes a new Grid Import Plugin API which provides a mechanism by which structured and unstructured grid data can be read from an external source and then converted into a representation that is understood by Pointwise. For an introduction, see Part 1 of this series. You can now create grid import plugins for Pointwise! If Pointwise does not yet import the grid format you use, you no longer need to wait for Pointwise to add it for you. FIELDVIEW UNSTRUCTURED PARAVIEW HOW TOSurf = mlab.surf(x, y, z, colormap='RdYlBu', warp_scale=0.3, representation='wireframe', line_width=0.5)Īxes = mlab.axes(color=(0, 0, 0), nb_labels=5)Īxes.title_text_lor = (0.0, 0.0, 0.0)Īxes.title_text_property.font_family = 'times'Īxes.label_text_lor = (0.0, 0.0, 0.0)Īxes.label_text_property.font_family = 'times'Īs a final comment, I would say that you can generate good visualizations in Mayavi/Paraview, Tecplot or matplotlib, but you will have to invest some time.In this second post of a four-part series you will read the details about how to use the new import API in the Pointwise Plugin SDK to write an importer for unstructured grid data. The next example generates a vector image (use with caution this simple example is 1.8 MB). In Paraview you can export to PDF, for example. It works ok for 2D cases, but in 3D I believe that there is need for raster images. I don't know why do you want vector graphics for your visualizations. In other words, if you had a new PhD student what would you push them towards for the best quality figures, and what would your workflow look like? Is it possible to do the same with paraview or visit compared to Tecplot? Paraview and visit I haven't used for anything nontrivial, and they seem to have a high barrier to entry.įor me, matplotlib takes a little more learning to get started, but after that you can produce excellent publication quality vector plots in the blink of an eye, far faster and better than in Matlab. It's also very easy to get up and running. Scripting in Tecplot is okay, and reproducing identical figures but with different data is pretty easy by recording macros and editing them. For 2D lineplots I prefer python/matplotlib for pgf graphics with great LaTeX operability, but python lacks flowfield visualization stuff. The vector graphics are okay, but not great, and it's not clear to me how to have the fonts be correctly generated raw by LaTeX. For those familiar with more of these tools than I am, what are the pros and cons of the various tools available? Right now I exclusively use Tecplot for CFD visualization, but it leaves a lot to be desired.
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