Ndgauss Sqrt Deri

NDGAUSS: create ND gaussian kernel in any derivative order. g = ndgauss(hsize,sigma); [g,xi,yi,..] = ndgauss(hsize,sigma);Inputs: - hsize is N-length of kernel size. - sigma is N-length of standard deviations (gaussian widths).Outputs: - g is the kernel. The size of g is hsize(1) x hsize(2) x ......

http://simulations.narod.ru/Shape is represented as 32-vertex polygone. The program in starts with random shape. In iteration of random search it search minimum perimeter/sqrt(area) each time. In each iteration the code try random position of vertices near current positions. Zone of random search...

Fast Algorithm estimating the number of sinusoids in a white Gaussian noise. This algorithm use a sub-space method based on chi-square statistics of eigen values of the Autocorrelation Matrix.Example :clear, close all hiddenN = 512;L_vrai = 4;fe = 2000;F = (0:(fe/2)/(N/2-1):(fe/2));snr = [-10 -10...


Platforms: Matlab

This routine shows the surprising behaviour of a random Fibonacci sequence.As reported by Divakar Viswanath - "RANDOM FIBONACCI SEQUENCES AND THE NUMBER 1:13198824..." - in MATHEMATICS OF COMPUTATION, 1999; 69(231): 1131-1155:"For the familiar Fibonacci sequence (defined by f1 = f2 = 1, and fn =...


Platforms: Matlab

Computes Disk Harmonic Functions; uses Bessel functions and derivatives Requires BessDerivZerosBisect2.mfunction dnm = DiskHarmonic(m,n,r,theta) if(m == 0) dnm = 1*Rnm elseif(m 0) dnm = sqrt(2)*Rnm.*cos(mu*theta) end m0: dnm(r,theta) = sqrt(2)*Rnm(r)*cos(m*theta) (m = |mu|) n = 0,1,2,... m =...


Platforms: Matlab

Piecewise Hermite cubic interpolation between 2 points knowing derivative valuesSyntax: y=p3hermite(x,pointx,pointy,yprime,plt)Wherepointx = data points of the independent variable (The points do not have to be equally spaced)pointy = data points of the dependent variable. pointy is the value of...


Platforms: Matlab

Calculates the min and max of a positive triangular distribution given a standard deviation (sigma) and assuming the mode = 1.This function can handle single value,vector or matrix inputs of sigma. For sigma > 1/sqrt(6), the distribution will be asymmetrical with minimum = 0 and mode = 1.


Platforms: Matlab

function histmat = hist2(x, y, xedges, yedges) Extract 2D histogram data containing the number of events of [x , y] pairs that fall in each bin of the grid defined by xedges and yedges. The edges are vectors with monotonically non-decreasing values.The code is optimized no loop inside, it can be...


Platforms: Matlab

AREASHADE(X,Y,F) shades the area where Y is larger than some fixed value F using the color yellow. AREASHADE(X,Y,F,C) uses color C instead of yellow. AREASHADE(X,Y,F,C,TH) where TH = 'h' uses F as a high threshold and shades the are where YF. H = AREASHADE(X,Y,F) returns a handle to the created...


Platforms: Matlab

JSURF is similar in almost all respects to the standard SURF plot except that it admits a second matrix T of z-coordinates of size [m,n] that is used to plot over the base surface described by coordinates (x,y,z). JSURF(x,y,z,T) plots the 3D surface T onto the surface described by (x,y,z)....


Platforms: Matlab

Amaizing calculator with more operations. Skins and multiple expressions to be typed and calculated. Feature: 1. calcuations in two modes: degrees and radians. 2. expressions are typed directly on multilline screen. 3. operation can be calculated after pressing OK button. example 34...


Platforms: Pocket PC, Windows, Handheld/Mobile Other

Desktop Expression calculator is a free calculator for solving arithmetic expressions. The expression calculator evaluates a single line arithmetic expression such as "sqrt(cos(60)+sin(30))". This version has a new interface, keyboard integration, a read aloud option (accessibility) and new...


Platforms: Windows

eCalc is a free Windows calculator with basic and scientific functions. The calculator is designed with a high level of aesthetics, including large buttons and an easy to read display. The calculator operates with a frameless border and stays open above your other programs - making it an ideal...


Platforms: Windows

NMath Core contains foundational classes for object-oriented numerics on the .NET platform. Product features include: Single- and double-precision complex number classes; full-featured vector and matrix classes for single- and double-precision floating point numbers and single- and...


Platforms: Windows

Closebracket let you define multiple shell actions in a single command to speed up the typing of the most repetitive shell commands. The command name of Closebracket is `] and `][, thats because these characters are near the "Enter" key and it is easy to type them fast. `] stands for "primary...


Platforms: *nix

GIS::Distance::Polar can do Polar coordinate flat-earth distance calculations. SYNOPSIS my $calc = GIS::Distance::Polar->new(); my $distance = $calc->distance( $lon1, $lat1 => $lon2, $lat2 ); Supposedly this is a formula to better calculate distances at the poles. While implimented, this...


Platforms: *nix

GIS::Distance::Vincenty Perl module contains Thaddeus Vincenty distance calculations. SYNOPSIS my $calc = GIS::Distance::Vincenty->new(); my $distance = $calc->distance( $lon1, $lat1 => $lon2, $lat2 ); For the benefit of the terminally obsessive (as well as the genuinely needy), Thaddeus...


Platforms: *nix

PlusPlus is a Delphi, VB, Java-like Perl preprocessor. SYNOPSIS ### Case 1: plain script use PlusPlus; /* This is a long awaited multiline comment */ my $nested_hash = {outer => {inner => {a => 1, b => [19, 73], c => 3}}} $nested_hash.outer.inner.a = 5; # colon in variable names...


Platforms: *nix

Unicode::Overload is a Perl source filter to implement Unicode operations. SYNOPSIS use charnames :full; use Unicode::Overload ( "N{UNION}" => infix => sub { my %a = map{$_=>1}@{$_[0]}; my %b = map{$_=>1}@{$_[1]}; return keys(%a,$b); }, "N{SUPERSCRIPT TWO}" => postfix => sub { $_[0] **...


Platforms: *nix

Libeval provides simple means of evaluating simple arithmetic expressions involving literal numeric values, variables and functions using the addition (+), subtraction (-), multiplication (*), division (/), modulo division (), exponentiation (^), sign (+-), percentag (%) and grouping (())...


Platforms: *nix