Rank: 330 based on 304 downloads (last 30 days) and 13 files submitted
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Dmitry Savransky

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Cornell University
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42.44405, -76.482635

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Files Posted by Dmitry View all
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(last 30 days)
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05 May 2011 Orbital Elements from Position/Velocity Vectors Convert positions and velocity state vectors to osculating Keplerian orbital elements. Author: Dmitry Savransky aerospace, mathematics, physics 29 0
05 May 2011 Screenshot Find Euler Angles An interactive demo for learning and visualizing 3D coordinate transformations and Euler angles. Author: Dmitry Savransky demo, simulation, matrix, modeling, physics 26 4
  • 5.0
5.0 | 4 ratings
02 Jun 2010 Vectorized N-Body Equation Fully vectorized n-body equations of motion in second and first order form. Author: Dmitry Savransky mathematics, physics, aerospace, simulation 19 0
  • 4.0
4.0 | 1 rating
12 May 2010 Simple Rejection Sampling Return values sampled from a user defined distribution. Samples are not guaranteed IID. Author: Dmitry Savransky mathematics, statistics 17 0
12 Feb 2010 Screenshot robotArm Simulate and animate a three link robotic arm raising a glass to table height. Author: Dmitry Savransky simulation, gui, control design, modeling, education, demo 29 3
  • 5.0
5.0 | 2 ratings
Comments and Ratings by Dmitry View all
Updated File Comments Rating
06 Jun 2011 Find Euler Angles An interactive demo for learning and visualizing 3D coordinate transformations and Euler angles. Author: Dmitry Savransky

This submission uses the 'unused argument syntax' introduced in R2009b. (see: http://blogs.mathworks.com/steve/2010/01/11/about-the-unused-argument-syntax-in-r2009b/ ) Users of earlier versions will most likely encounter errors. You can fix these quite easily by replacing the tildes in various subfunction syntax declarations with dummy variables. I apologize to all pre-R2009b users for the inconvenience.

15 Jun 2010 Mathematica Symbolic Toolbox for MATLAB--Version 2.0 A symbolic toolbox for MATLAB based on Mathematica. Author: Ben Barrowes

As usual from this author, a great addition to MATLAB. Quick note for those compiling on OS X - make sure you edit math.c line 227 as suggested in the comments below it, but don't worry about setting the library path. Your mex line should be something like:
mex -I/Applications/Mathematica.app/SystemFiles/Links/MathLink/DeveloperKit/CompilerAdditions/ -L/Applications/Mathematica.app/SystemFiles/Links/MathLink/DeveloperKit/CompilerAdditions/ -lMLi3 math.c

12 Oct 2009 Multiple Precision Toolbox for MATLAB This toolbox defines a new mp class allowing multiple precision objects in MATLAB. Author: Ben Barrowes

Absolutely fantastic. Exactly what I needed - many thanks. Quick note for anyone installing on RHEL5. The default rpms that may be pre-installed for GMP don't seem to work when it comes time to compile the c files. However, if you get rid of these and compile GMP and MPFR from source, everything works great.

Comments and Ratings on Dmitry's Files View all
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04 Jul 2014 Lomb (Lomb-Scargle) Periodogram Computes the Lomb normalized periodogram (spectral power as a function of frequency). Author: Dmitry Savransky Hunter

Thanks for the script, it really helped a lot. I am a bit confused as what should be the x-axis in the plots: FAP or power spectrum?

10 Jun 2014 Vectorized N-Body Equation Fully vectorized n-body equations of motion in second and first order form. Author: Dmitry Savransky Chong, sun

23 Apr 2014 Lomb (Lomb-Scargle) Periodogram Computes the Lomb normalized periodogram (spectral power as a function of frequency). Author: Dmitry Savransky John

Thank you for creating this script. I have observed significantly different results compared to Matlab's "pwelch" when analyzing the same data (uniformly sampled). Can you please elaborate on the differences between the "lomb" result and Matlab's "pwelch" result? Thank you

To clarify, the differences observed are in spectrum amplitude. The frequencies associated with the peaks are the same.

20 Feb 2014 Lomb (Lomb-Scargle) Periodogram Computes the Lomb normalized periodogram (spectral power as a function of frequency). Author: Dmitry Savransky Boris

To Sophia:
Try to transpose the input arrays.

12 Dec 2013 robotArm Simulate and animate a three link robotic arm raising a glass to table height. Author: Dmitry Savransky asa, ali

hi
so thanks

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