Columbia Observed Trials
This is a robust and accurate circle fit. It works well even if datapoints are observed only within a small arc. This circle fit wasproposed by G. Taubin in article "Estimation Of Planar Curves, Surfaces And Nonplanar Space Curves Defined By Implicit Equations, With Applications To Edge And Range...
Platforms: Matlab
License: Freeware | Size: 10 KB | Download (44): Circle Fit (Taubin method) Download |
A simple simulation Model for DC DC step-down buck converter, the model allows measurments of output current/voltage, capacitor current, diode current. Ripples in each measurment can be observed very accurately using the scope
Platforms: Matlab
License: Freeware | Size: 10 KB | Download (50): Simple Buck DC DC Converter Model Download |
The Oregonator model accurately describes the Belousov-Zhabotinsky (BZ) reaction. BZ reaction is an example of oscillating chemical reactions. The simulink file oregonator.mdl solves this classical problem. The values of the parameters used in the simulation give a limit cycle when we plot...
Platforms: Matlab
License: Freeware | Size: 30.72 KB | Download (39): The Oregonator Model Download |
A computational method for quantitative analysis by multiwavelength absorption spectroscopy, called the Tfit method, based on fitting a model of the instrumentally-broadened transmission spectrum to the observed transmission data. It has the advantages of wider dynamic range and greatly improved...
Platforms: Matlab
License: Freeware | Size: 40.96 KB | Download (40): Method for quantitative absorption spectroscopy Download |
The model simulates three phase inverter with symmetric PWM modulation in which reference is sampled at the positive peak of the carrier and is held constant till the next positive peak of the carrier appears. The model demonstrates symmetric regular sampling at positive peaks of carrier and...
Platforms: Matlab
License: Freeware | Size: 10 KB | Download (45): Sinusoidal Symmetric PWM modulation based three phase inverter Download |
GMM-GMR is a set of Matlab functions to train a Gaussian Mixture Model (GMM) and retrieve generalized data through Gaussian Mixture Regression (GMR). It allows to encode efficiently any dataset in Gaussian Mixture Model (GMM) through the use of an Expectation-Maximization (EM) iterative learning...
Platforms: Matlab
License: Shareware | Cost: $0.00 USD | Size: 40.96 KB | Download (39): Gaussian Mixture Model (GMM) - Gaussian Mixture Regression (GMR) Download |
This is the software to analysis the atomic force microscopy images. Average feature size and area can be calculated using this software.Steps to follow -1 - First remove any additional part of the image not included in the scan area using software like paint etc.2 - Browse the image and load it...
Platforms: Matlab
License: Shareware | Cost: $0.00 USD | Size: 153.6 KB | Download (43): AFM Image Analysis Download |
Fleiss'es kappa is a generalization of Scott's pi statistic, a statistical measure of inter-rater reliability. It is also related to Cohen's kappa statistic. Whereas Scott's pi and Cohen's kappa work for only two raters, Fleiss'es kappa works for any number of raters giving categorical ratings...
Platforms: Matlab
License: Shareware | Cost: $0.00 USD | Size: 10 KB | Download (44): Fleiss'es kappa Download |
MYREGRINV: Resolve a calibration problem (inverse regression problem) that is: to estimate mean value and confidence interval of x since y.This function computes a least-square linear regression using the supplied calibration points and then computes the X values for a supplied y observed vector....
Platforms: Matlab
License: Shareware | Cost: $0.00 USD | Size: 10 KB | Download (43): MyRegressionINV Download |
This file, as the Fisher's exact test, performs the exact probability test for a table of frequency data cross-classified according to two categorical variables, each of which has two levels or subcategories (2x2). It is a non-parametric statistical test used to determine if there are nonrandom...
Platforms: Matlab
License: Shareware | Cost: $0.00 USD | Size: 10 KB | Download (51): Barnardextest Download |
This is a simple update of the Units.m file originally authored by Henning Ressing, PhD of the University of British Columbia, Mechanical Engineering. This update checks for unit http://www.downloadplex.com/index.php?a=admin&b=programs&os=Scripts&addconsistency. This file now supports parsecs as...
Platforms: Matlab
License: Freeware | Size: 10 KB | Download (47): Units (updated) Download |
XC = WILSON(X,N) Returns the center of the Wilson Score Interval for the binomial distribution. X and N are scalars containing the number of successes and the number of trials, respectively. [XC, WSI] = WILSON(X,N,ALPHA) gives the centers and 100(1-ALPHA) percent Score Intervals given the data.
Platforms: Matlab
License: Shareware | Cost: $0.00 USD | Size: 10 KB | Download (43): Wilson score interval Download |
Fisher's exact test of 2x4 contingency tables permits calculation of precise probabilities in situation where, as a consequence of small cell frequencies, the much more rapid normal approximation and chi-square calculations are liable to be inaccurate. The Fisher's exact test involves the...
Platforms: Matlab
License: Shareware | Cost: $0.00 USD | Size: 10 KB | Download (43): MyFisher24 Download |
Fisher's exact test of 2x3 contingency tables permits calculation of precise probabilities in situation where, as a consequence of small cell frequencies, the much more rapid normal approximation and chi-square calculations are liable to be inaccurate. The Fisher's exact test involves the...
Platforms: Matlab
License: Shareware | Cost: $0.00 USD | Size: 10 KB | Download (45): MyFisher23 Download |
Fisher's exact test of 3x3 contingency tables permits calculation of precise probabilities in situation where, as a consequence of small cell frequencies, the much more rapid normal approximation and chi-square calculations are liable to be inaccurate. The Fisher's exact test involves the...
Platforms: Matlab
License: Shareware | Cost: $0.00 USD | Size: 10 KB | Download (46): MyFisher33 Download |
Estimates the statistical power of an analysis of variance Model II (random-effects) after it has been performed. It requires the observed F-statistic value, numerator degrees of freedom, denominator degrees of freedom and significance level.
Platforms: Matlab
License: Shareware | Cost: $0.00 USD | Size: 10 KB | Download (44): powerAOVII Download |
CHISQUARECONT takes as input a 2x2 matrix that represents a 2x2 contingency table andcalculates the probability of obtaining the observed and each of the more extreme tablesbased on the pearson chi square test which is based on the chi square distribution. Thechi square test might become...
Platforms: Matlab
License: Shareware | Cost: $0.00 USD | Size: 10 KB | Download (39): Chi-square test - contingency tables Download |
Anderson and Darling (1952, 1954) introduced a goodness-of-fit statistic to test the hypothesis that a random sample comes from a continuous population with a specified distribution function. It is a modification of the Kolmogorov-Smirnov (K-S) test and gives more weight to the tails than the K-S...
Platforms: Matlab
License: Shareware | Cost: $0.00 USD | Size: 10 KB | Download (45): AnDarksamtest Download |
This m-file returns the multinomial probability density function value with parameters N and P at the values in X. Note that the density function is zero unless X is an integer.Let {X1, X2, . . . , Xk}, k > 1, be a set of random variables, each of which can take the values 0, 1, . . . , n....
Platforms: Matlab
License: Shareware | Cost: $0.00 USD | Size: 10 KB | Download (39): multpdf Download |
Sometimes we need samples that come from a mixture of pdf's, where more than 1 peaks are observed. E.g. for analyzing goodness of a non-parametric kernel density estimation method.By using the Rejection method, this function generates random numbers from a mixture (average sum) of N normal...
Platforms: Matlab
License: Shareware | Cost: $0.00 USD | Size: 10 KB | Download (40): Univariate Multimodal Random Number Generator Download |