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The function plot_hht is a realization of the Hilbert-Huang transform (HHT). The HHT decomposes a signal into intrinsic mode functions (or IMFs), and obtain the instantaneous frequency data. It is designed to work well for data that are nonstationary and nonlinear...

Matlab procedure that generates a Surface Plasmon Resonance profile to compare it with experimental data. Relevant parameters are given as graphical input.A 90dlT- prism is assumed, the reflected intensity is plotted against the external angle. It can be plotted on its own, or compared to a file...

This function will compute the great circle distance between two points on a sphere of uniform radius using the Vincenty formula. At minimum, four inputs are required: lat1, long1, lat2, long2. Optionally, a fifth parameter (r) can be specified. If this parameter isn't specified it's assumed to...


Platforms: Matlab

RANDPERMFULL(N) is a random complete or full permutation of the integers from 1 to N; each integer is randomly assigned to an index position that is different from its value. In other words R = RANDPERMFULL(N) creates a row vector R, such that R(j) ~= j for all j=1:N. This type of permutation is...


Platforms: Matlab

For the description of the divergence you can take a look at :http://en.wikipedia.org/wiki/Kullback-Leibler_divergence


Platforms: Matlab

NCHOOSE - all combinations of the elements of a setW = nchoose(S) returns all possible combinations of one or moreelements of the set S. In total there are 2^N-1 combinations, where Nis the number of elements in S. W is a cell array: each cell holds oneof these combination (as a row vector). S...


Platforms: Matlab

Chaos game: http://en.wikipedia.org/wiki/Chaos_game


Platforms: Matlab

This is a simple gui application that used gaussian quadrature inegration based on index=1-3. It can be easily extended to higher order of indices for better accuracy. For more information visit:http://en.wikipedia.org/wiki/Gaussian_quadrature


Platforms: Matlab

Example of usage: >>> from croniter import croniter >>> from datetime import datetime >>> base = datetime(2010, 1, 25, 4, 46) >>> iter = croniter('*/5 * * * *', base) # every 5 minites >>> print iter.get_next(datetime) # 2010-01-25 04:50:00 >>> print iter.get_next(datetime) # 2010-01-25 04:55:00...


Platforms: *nix

Pictogame is a simple Java based game to play nonograms, if you don't know what a nonogram is, check http://en.wikipedia.org/wiki/Nonogram If you happen to have any suggestions, patterns or phrases you want to add, email me and I be glad to add them.


Platforms: *nix

Forward Viterbi algorithm based on the Python code found at: http://en.wikipedia.org/wiki/Viterbi_algorithmAlso included is an example based on the one from the Wikipedia page for a simple 2-state model with 4 observations. To paraphrase:Bob tells Alice his daily activities (observations) and...


Platforms: Matlab

mplements the following optimization methods which do not use the gradient of the problem being optimized:* Particle Swarm Optimization (see http://en.wikipedia.org/wiki/Particle_swarm_optimization)* Differential Evolution (see http://en.wikipedia.org/wiki/Differential_evolution)* Pattern Search...


Platforms: Matlab

Obliqueview transforms an axes to use an oblique projection instead of the default orthographic projection. Although oblique projections are distorted views, they are often useful for illustration purposes.Obliqueview lets the user select a viewing plane ('xy','xz,'yx',etc) and angle for the...


Platforms: Matlab

The objective is to fill a 9?*a*9 grid so that each column, each row, and each of the nine 3?*a*3 boxes (also called blocks or regions) contains the digits from 1 to 9. Click in the square you want to put a number, click in the corners to leave markers. Get the number wrong too often and you will...


Platforms: Mac

The motivation behind this project is that most countries have different forms of postal addresses e.g. http://www.bitboost.com/ref/international-address-formats.html , http://en.wikipedia.org/wiki/Address_%28geography%29 This app assumes that all postal addresses worldwide can be made up of 5...


Platforms: *nix

Vibterbi algorithm for HMM inferenceViterbi algorithm based on the Python code found at: http://en.wikipedia.org/wiki/Viterbi_algorithmAlso included is an example based on the one from the Wikipedia page.The code is fully vectorized to be efficient. Also logarithm trick is used to avoid numeric...


Platforms: Matlab

Boardgame Coppit developed in Java. http://en.wikipedia.org/wiki/Coppit


Platforms: Windows, Mac, Linux

From the paper :Nock, Richard and Nielsen, Frank 2004. Statistical Region Merging. IEEE Trans. Pattern Anal. Mach. Intell. 26, 11 (Nov. 2004), 1452-1458.It uses an a disjoint-sets data structure with a union-find strategy: http://en.wikipedia.org/wiki/Disjoint-set_data_structureJust run srmdemo.m...


Platforms: Matlab

#5237 implements a Gabor filter for image processing. From the comments and through my own use, the implementation seems to have limited freedom, and also the variances are defined in the original x,y instead of the rotated x', y' directions.The code is a modified version based on...


Platforms: Matlab

Generate a Gamma random variable "Statistical Distributions", Evans, Hastings, Peacock, 2nd Edition, Wiley, 1993, p.75-81INPUTS: (N,M) = size of array of random variables to generate b = scale parameter > 0 c = shape parameter > 0 probability density function (pdf) p(x) = (x/b)^(c-1) * exp(-x/b)...


Platforms: Matlab