Probability Density Function

The QM Probability program displays the time evolution of the position-space wave function and the associated probability density. The default wave function is the n = 5 state in a ramped infinite square well. Additional states and other potential energy functions can be specified using the...

This function calculates the probability under the normal distribution curve, plots the graph and the area calculated.Normaldistribution calculating the area under a normal distribution curve from -ve infinity upto point x. Input: x : point on the normal distribution curve mean : mean of the...

This function implements bivariant Gaussian kernel density estimation. It can be used to estimate bivariant probability density function (pdf), cumulative distribution function (cdf) and inversed cdf (icdf) from a set of random data. The code is programmed in a way to be suitable for beginners to...


Platforms: Matlab

The 3-D Hydrogen Atom Probability Densitites model simulates the probability density of the first few (n = 1, 2, and 3, and associated l and m values) energy eigenstates for the Hydrogen atom (the Coulomb potential). The main window shows the energy level diagram for the solutions to the Coulomb...


Platforms: Mac

The Central Limit Theorem (CLT) states that the sample average of N i.i.d. random variables approaches the normaldistribution.This script displays the probability density function of the sample average of N i.i.d variables with respect to N. The variables can be distributed according to a chi-2,...


Platforms: Matlab

Fits Gaussian curve into pointsThe function fits Guassian probability density function into a set of points. Standard deviation and mean are returned.


Platforms: Matlab

The Expectation-Maximization algorithm (EM) is widely used to find the parameters of a mixture of Gaussian probability density functions (pdfs) or briefly Gaussian components that fits the sample measurement vectors in maximum likelihood sense [1]. In our work, the expectation-maximization (EM)...


Platforms: Matlab

GLDM calculates the Gray level Difference Method Probability Density Functions for the given image. This technique is usually used for extracting statistical texture features of a digital mammogram.For details on the Gray level Difference Method, refer the following paperJ. K. Kim and H. W. Park,...


Platforms: Matlab

RANDPDF returns the matrix of random numbers from probability density distribution defined in p and px. p are the density (the y axis) and px are the value (the x axis) of the pdf. p and px must be of the same length. dim define the output matrix dimensions, for example dim=[100 3] define the...


Platforms: Matlab

PoissRatioCdf computes the cumulative distribution function (cdf) and/or the probability mass function (pmf) of the random variable X which is proportional to the ratio of two independent Poisson random variables, X = constant * (Y_lambdaNum / Y_lambdaDen), where constant is given constant,...


Platforms: Matlab

This function extracts a scalar/vector/matrix of random numbers with discrete Probability Distribution Function.The PDF is specified by the user as a input vector.This function is designed to be fast, and it is implemented within a .mex fileFollowing Olivier B. comments (that I acknowledge for...


Platforms: Matlab

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

This GUI demo shows how a random variable, X, is transformed to a new random variable, Z, by a function z=f(x). The random variable X can have a uniform probability density function (pdf), a Gaussian pdf, or ?Other pdf? given by a user specified MATLAB expression. A pseudo-random number generator...


Platforms: Matlab

NMath Stats is a .NET statistics library that provides functions for statistical computation and biostatistics, including descriptive statistics, probability distributions, combinatorial functions, multiple linear regression, hypothesis testing, analysis of variance, multivariate statistics,...


Platforms: Windows

Distribution Guide is a program allowing to build various graphs of statistical distributions. It enables you to enter the parameters of the particular distribution and display the graphs of such functions as PDF, CDF, and others. Printing support is provided as well. Supported distributions: -...


Platforms: Windows

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

SAMPLEDIST Sample from an arbitrary distribution sampleDist(f,M,N,b) retruns an array of size X of random values sampled from the distribution defined by the probability density function referred to by handle f, over the range b = [min, max]. M is the threshold value for the proposal...


Platforms: Matlab

Summary of what function does: 1) Automatically sets the number and range of the bins to be appropriate for the data. 2) Compares multiple sets of data elegantly on one or more plots, with legend or titles. It also graphs the mean and standard deviations. It can also plot the median and mode. 3)...


Platforms: Matlab

Cauchy cdf, pdf, inverse cdf, parameter fit, and random generator.Implementation package of the Cauchy distribution.cauchycdf: Cauchy cumulative distribution function (cdf).cauchyfit: Parameter estimation for Cauchy data.cauchyinv: Inverse of the Cauchy cumulative distribution function...


Platforms: Matlab

The QM Probability 2D program displays the time evolution of the two-dimensional probability density using color to represent its magnitude. The default wave function is a two-state superposition in the x (nx = 1,2) and y dimension (ny = 3,4) state in an infinite square well. Additional states...


Platforms: Mac