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Galaxy model

version 2.5 (2.27 KB) by Nicolas Douillet
A function to compute and display a galaxy point cloud (spiral or elliptic), with some tunable parameters (shape, number of arms, etc...)

7 Downloads

Updated 27 Apr 2020

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Design your own galaxy ! :-)

For pedagogic / scientific diffusion purposes. Is not a rigorous astrophysical model.

F5 in galaxy_model.m or galaxy_model; in console to run the program and plot the figure.

A lot of parameters -curvature, number of arms, number of stars and many others- are available in the file header to tune the shape of the model.

Since these parameters are quite sensitive, my advice is to first test them individually -one by one- to understand their influence.

For some out of range parameter values, you may encounter this warning in Matlab console :

> Warning: Using only the real component of complex data.
> In getRealData (line 52)
> In scatter3 (line 59)
> In spiral_galaxy_model (line 115)

In this kind of case, just go back to some reference example parameter set, and do again your parameter tuning, one by one.

Questions, support, feedback : nicolas.douillet (at) free.fr

Cite As

Nicolas Douillet (2020). Galaxy model (https://www.mathworks.com/matlabcentral/fileexchange/75109-galaxy-model), MATLAB Central File Exchange. Retrieved .

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Updates

2.5

Added one parameter set example for elliptic galaxy type

2.4

Updated file name in description

2.3

Fixed colormap figure bug

2.2

Name, cover img, typo

2.1

Profile view option + typo

2.0

Model improvement with some extra parameters (distribution, Markers, colors, etc), profile view, parameter set examples, description.

MATLAB Release Compatibility
Created with R2019b
Compatible with any release
Platform Compatibility
Windows macOS Linux