Cosine Definite Integral

Y = DCTN(X) returns the discrete cosine transform (DCT) of X.X = IDCTN(Y) returns the inverse discrete cosine transform (IDCT) of Y.Y = DSTN(X) returns the discrete sine transform (DST) of X.X = IDSTN(Y) returns the inverse discrete sine transform (IDST) of Y.X and Y can be N-dimensional.D =...

Y = RESIZE(X,NEWSIZE) resizes input array X using a DCT (discrete cosine transform) method. X can be any array of any size. Output Y is of size NEWSIZE.Input and output formats: Y has the same class as X.As an example, if you want to multiply the size of an RGB image by a factor N, use the...

Subspace learning based face recognition methods have attracted many researchersd-deOao interests in recent years. In thispaper, a novel Laplacian Smoothing Transform (LST) is proposed to transform an image into a sequence, by which low frequencyfeatures of an image can be easily extracted for a...


Platforms: Matlab

This function computes the integral "I" via Simpson's rule in the interval [a,b] with n+1 equally spaced pointsSyntax: I = simpsons(f,a,b,n)Where, f= can either be an anonymous function (e.g. f=@(x) sin(x)) or a vector containing equally spaced values of the function to be integrated a= Initial...


Platforms: Matlab

Z = CUMSIMPSUM(Y,DEL) computes an approximation of the cumulative integral of Y from a=0 to b via the Simpson's rule (with unit spacing). For matrices Y, CUMSIMPSUM works on columns of Y. DEL contains the upper limit(s) b.CUMSIMPSUM is a cumulative analog to SIMPSUM and may be used as an...


Platforms: Matlab

This zip has 3 funtions:-polegende generates legendre polinomyal.-flege performs an integration variable change to change any interval [a,b] to [-1,1] so the integral can be properly evaluated.-gausslegende numericaly evaluates the integral of function [f]


Platforms: Matlab

HELP: PLOTsaveas_fig.m function file is a nice demo and tiny useful script to manipulate figure window and to have printout options. Also, via this script a user can obtain info on a figure object size, created date, etc.Example: computation of integral of f(x)=sin(2.5*x) for x=0..20*pi and plot...


Platforms: Matlab

log(cos(Z)) and log(sin(Z)) return infinities for abs(imag(Z)) > 711 in double precision, or abs(imag(Z)) > 90 in single precision. The overflow occurs in the trigonometric function; the correct final result has about the same magnitude as Z, and can be readily computed.Using logcos(Z) or...


Platforms: Matlab

The MATLAB package Chebpack solves specific problems for differential or integral equations. It is organized in four modules, corresponding to four levels of complexity. Each level has an associated set of particular examples. The package is based on the Chebyshev tau spectral method applied in...


Platforms: Matlab

This Technique is very useful for the Programmer/Researcher/Users for color images compression type RGB. This Technique is using three level DWT and one-dimensional DCT.


Platforms: Matlab

Basic examples of using trapz and quad to evaluate the integral of two simple known functions between defined limits.A for loop is used to loop over the upper limits of integration. The results are compared to show the greater accuracy, efficiency and ease of use of quad for a known function


Platforms: Matlab

Compute the solution to the arbitrary-shape thin wire integral equation found in Section 4.5 ofGibson, Walton C. "The Method of Moments in Electromagnetics," Taylor and Francis/CRC, 2008.Assumes a straight wire along z-axis.Gauss-Legendre quadrature weights are computed using the following...


Platforms: Matlab

The plotDTI function plots a single tensor, a row of tensors, or a 2D field of tensors as Gaussian ellipsoids. The tensors must be given as 3x3 symmetric positive definite matrices.


Platforms: Matlab

We can exploit the symmetry of a real, positive definite, symmetric matrix by using the Cholesky decomposition to compute the inverse.The built-in MATLAB inv function uses LU decomposition which requires extra pivots and operations. Rarely does one actually need to compute the inverse of a matrix...


Platforms: Matlab

This workspace employs interactive graphics and Muller's method to compute function roots in a rectangular region of the complex plane. Function interact employs surface and contour plots of -log(abs(function(z))) to locate function roots which are read interactively with the graphics cursor and...


Platforms: Matlab

Compute the solution to Hallen's Integral Equation with symmetric excitation using pulse basis functions and point matching. Assumes a straight wire along z-axis.Uses the following script for gaussian quadrature weights:http://www.mathworks.com/matlabcentral/fileexchange/4540


Platforms: Matlab

Goertzel algorithm generalized to non-integral multiples of fundamental frequency.The conventional Goertzel Algorithm can be used to compute individual DFT coefficients. In case we need to compute some values of DTFT (that means, non-integer multiples of the fundamental frequency), slight...


Platforms: Matlab

Parameter to dynamically track the pulsed to tonal mean power distribution. This set of scripts and functions show how the pulsed to tonal strength parameter can be calculated.The pulsed to tonal strength parameter/ratio (PTR) can give information of the mean power present in the pulsed...


Platforms: Matlab

This GUI can be used by entering 'nu' at the MATLAB command prompt. The user can either select a function (f(x)) of their choice or a statistical distribution probability distribution function to plot over a user defined range. The function's integral can be evaluated over a user defined range by...


Platforms: Matlab

Euler spiral is generated by evaluating Fresnel integral.By changing some of the parameters different types ofspirals are generated.This script can generate 18 different spirals.When this script is executed a list dialog appears with 18 differentpolynomials, select any one to generate one of...


Platforms: Matlab