Questions tagged [visualization]

Questions relating to graphing and displaying numerical data

20 questions with no upvoted or accepted answers
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106 views

Existing software/scripts for spiral graphs?

I am looking for existing software or scripts to generate spiral graphs from cyclical (time) data, as presented by Webber and Muller. The graphs shown in the paper look like a great means of ...
3
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0answers
354 views

C60 orbital calculation

I am currently trying to reproduce the results published by Hands et al.1 using MATLAB. They calculated the bases of the C60 wave functions of HOMO, LUMO and LUMO+1. I did the following: I ...
3
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0answers
37 views

Is there a library which allows for converting 4D implicit surfaces to simplexes?

I have a 4D surface in the form of the spin quadric. I would like to display this surface onto the screen. One of the method which I would like to use to present surface onto the screen is projection. ...
3
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0answers
2k views

Create 2D plot from two data sets in ParaView

I'm currently running a CFD simulation for an internal flow and need to compare my computed results to experimental data. The experimental data is saved as a comma separated file with columns for x,y,...
2
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0answers
29 views

Piecewise-linear Continuations vs Marching Squares/Cubes

It seems that both piecewise-linear continuation and marching squares are methods to produce iso-contours of a scalar function given the function's values on a grid. It seems that piecwise-linear ...
2
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0answers
313 views

Showing date in Paraview's Annotate Time Filter

I have a time dependent data set where each frame corresponds to a certain date. I need to show the time annotation, much like what Annotate Time Filter does, but show the date instead of time as a ...
2
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0answers
767 views

Optimizing display of millions of triangles per second

I am working on a web-based molecular visualization program for a research project (e.g., one that can display XYZ and PDB files). The current options are outdated (for instance, Jmol uses Java). My ...
1
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0answers
38 views

Stress visualization for structured and unstrcutured mesh

I put together a FEM solver to do some structural analysis. At the moment I am trying to add stress visualization feature to my code. The post-processing is done with Paraview and the results with ...
1
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0answers
56 views

3D log density plot in ParaView

I have a .csv file of thousands of (x,y,z) point particles that I would like to visualize in ParaView. I am able to plot a 3D scatterplot using the TableToPoints, and by decreasing point opacity I can ...
1
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0answers
755 views

3D visualization of the results of a 2D simulation in COMSOL

Considering that COMSOL forum is dead and CFD-online is not responsive, I'm gonna try asking my question here: I have done a 2D simulation in COMSOL multiphysics. I have two independent variables x ...
1
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0answers
576 views

best package choice for visualizing agent based model simulations in python

This is a visualization/programming design problem. I am working on building a geospatial agent based model, meaning that there are multiple agents interacting within some particular spatial container....
1
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0answers
178 views

Visualization of solution for a MAC grid

So I implemented the projection method as in Chorin (1969) for the solution of the Navier-Stokes Equations with the Boussinesq Approximation, using a 2nd Order accurate FD scheme. The primitive ...
0
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0answers
49 views

How to calculate the average velocity over a surface through time using paraview?

My problem is a little more complex, but here is a simplified similar model. Let us consider a fire source inside a box and the hot gases (burnt or unburnt) from the combustion are going out of the ...
0
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0answers
44 views

Triplet optimization algorithm producing weird results?

I wrote an algorithm for data analysis using the CERN ROOT framework. It takes in three files of sorted UNIX timestamps from a single year and pairs them up in the closest triplets, where each file ...
0
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0answers
46 views

Plotting a Magnetic Field in Spherical Coordinates in Python

I am modeling a Helmholtz Coil as two dipoles from far away and I want to plot the magnetic field. $$\mathbf{B}(\mathbf{r}) = \frac{\mu_0 |\mathbf{m}|}{4\pi r^3}\left(2\cos\theta\,\hat{\mathbf{r}} + \...
0
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0answers
23 views

How can I convert OpenFOAM postProcessing directory to HDF5?

Are there existing tools or practices for converting OpenFOAM run-time post-processing directory, postProcessing, into a single HDF5 file or HDF5 groups? The ...
0
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0answers
73 views

Numerical flow visualization in 2D for a moving boundary,

I have a rigid body that moves according to a set of governing ODEs, and I'd like to numerically visualize the vortices that are shed by this object. How could I proceed? I've been reading up on the ...
0
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0answers
14 views

Compute cell values and isosurface constant from density values of particles

I am trying to reconstruct the surface for a fluid simulation based on a list of particles using the Marching Cubes algorithm. From different resources, such as http://paulbourke.net/geometry/...
0
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0answers
35 views

Extracting raw data from a graph

I am supposed to do black-box modeling, I need the input and output data for training, however, the authors didn't agree to share the raw data with me, I can only use their publication where these ...
0
votes
1answer
120 views

temperature profile on axial direction of a chamber

I have a task to plot average temperature profile at each cross-section in the axial direction of a combustion chamber. I have $x$, $y$, $z$ coordinates data in excel as well as the corresponding ...