Data objects canĮither be scientific datasets, such as rectilinear grids or finite elements meshes The most fundamental data structure in VTK is a data object. For more details, refer to one of the VTK books. ![]() This chapter briefly introduces the VTKĭata model used by ParaView. ParaView uses VTK, the Visualization Toolkit, to provide the visualizationĪnd data processing model. ![]() To use ParaView effectively, you need to understand the ParaView data model. Treat other scalar fields as the same way above.3. Then you will get something like a 3D surface, here is it: ![]() you just simply replace the 3rd column of coordinates, i.e. Since I am quite lazy to explain as well as I do not know what you had in hand and want to perform, any discussion in details is sure. Now openning the vtk file by paraview, you will get something like this Simple surface on a triangle mesh with vertices (xj,yj,zj) for j=0,8. Lastly, make a file, say triangle_surf.vtk, with the following contents: # vtk DataFile Version 2.0 Secondly, adding values of $z_j=z(x_j,y_j)$, for instance, $z_0 = 1$ and $z_j = 0$ for $j \not = 0$, we now had the set of 9 points in 3D, where $z(x,y)$ is the scalar that we want to plot, and the mesh now is with 8 trianlges surrounding $(0,0)$. For example, we firstly generate vertices like this: $(x_0, y_0) = (0,0)$ and Suppose that you had a set of vertices of the triangle mesh and a scalar field valued at the vertices. Here I'm going to provide you a very simple example. We can use the UNSTRUCTURED_GRID dataset attribute format in VTK. I Edited my message with an example of my vtk file. How can I obtain plots like the first one? Something like an "elevation", but in paraview I just had obtained plane plots like ![]() I have a usual vtk file with a mesh of triangles and a scalar velocity.
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