SIMTOI is developed by Dr Brian Kloppenborg of Georgia State University and
distributed under an open source (GPL v3) license.
If you encounter bugs, please file a report on the
[issue tracker](https://github.com/bkloppenborg/simtoi/issues).
If you have specific requests for additional features, models, or other
enhancements, please send an email To Brian (contact information on the
[SIMTOI project page](https://github.com/bkloppenborg/simtoi)).
If you use SIMTOI for your work, please acknowledge it per the
[guidelines on the project's webpage](https://github.com/bkloppenborg/simtoi#licensing-and-acknowledgements).
## Features
For a complete, up-to-date list of features, see
[SIMTOI's homepage on GitHub](https://github.com/bkloppenborg/simtoi)
### Stellar models
* Uniform disk
* Several limb darkening models including Claret (2000), Fields (2003),
logarithmic, power law, quadratic, and square root.
* Oblate spheroids with gravity darkening
* Roche surfaces
* Spots
### Astrophysical disks
* Power law density profile in both radius and height (c.f. Pascucci et al. 2004)
* Power law density profile in both radius and height with an exponential taper
at large radii (c.f. Andrews et al. 2009)
### Model positioning
* Static (x,y,z)
* Keplerian orbit
### Supported data types:
* Optical interferometric V2, T3 (amplitude and phase)
* Broadband photometry
### Minimization Engines:
* [Levmar](http://users.ics.forth.gr/~lourakis/levmar/) (Levenberg-Marquardt optimization algorithm)
* Gridsearch
* [MultiNest](http://ccpforge.cse.rl.ac.uk/gf/project/multinest/) (Bayesian nested sampling, model selection)
### Other features:
* Live parameter updating, model rendering, and data computation.
* Model animation
* Command line options. Easily scripted using Python
* Easily edited JSON save files
* Runs locally on your computer (unlike JMMC's litpro)
## System requirements, downloading and installing
SIMTOI is designed to be cross-platform compatible. It has been tested on
several variants of GNU/Linux and on Mac OSX 10.8. Test on additional
platforms are most welcomed.
SIMTOI requires that your computer have a graphics processor that supports
OpenCL 1.0 (or higher) and OpenGL 3.3 (or higher). Almost any discrete graphics
card by nVidia or ATI/AMD will meet these requirements. Intel integrated graphics
provided by Fourth generation Intel processors (i.e. i3/5/7-4xxx) is presently
experimental.
See
[SIMTOI's homepage on GitHub](https://github.com/bkloppenborg/simtoi)
for the latest requirements and installation instructions.
