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Date: Updated Submitted Time Frame: All Time Last 30 Days Last 7 Days			1 - 59 of 59
Date	File	Tags	Downloads (last 30 days)	Comments	Ratings
29 Oct 2009	Variable Precision Integer Arithmetic Arithmetic with integers of fully arbitrary size. Arrays and vectors of vpi numbers are supported. Author: John D'Errico	toolbox, projecte, rabin, biginteger, mersenne, data type	186	29	4.66667 4.7 \| 17 ratings
29 Oct 2009	SLM - Shape Language Modeling Least squares spline modeling using shape primitives Author: John D'Errico	shape, modeling, interpolation, spline, splines, slm	331	11	5.0 5.0 \| 10 ratings
23 Jun 2009	insphere Inscribed sphere, entirely inside the facets of a 3-d convex hull Author: John D'Errico	circumsphere, convex hull, computational geometr..., sphere, insphere	108	1	5.0 5.0 \| 1 rating
17 Jun 2009	AB = kBA Solves the homogeneous linear system AB = kBA Author: John D'Errico	homogeneous, linear, riccati, system, linear algebra	149	4	3.0 3.0 \| 2 ratings
17 Jun 2009	incircle.m In-circle of a convex polygon, or of the convex hull of a set of points in two dimensions Author: John D'Errico	computational geometr..., incircle, convex hull, circle, polygon, inscribed circle	125	2	5.0 5.0 \| 2 ratings
15 May 2009	binomfactors Returns a factored form for very large binomial coefficients Author: John D'Errico	vpi, nchoosek, factors, factor, binomial coefficient, binomial	122	0
14 May 2009	nextprime For any given number (also vpi numbers), find the next prime number in the sequence of primes. Author: John D'Errico	vpi, factor, next prime, numbers, number, primes	138	4	4.66667 4.7 \| 3 ratings
13 May 2009	The divisors of a number, perfect, amicable, and sociable numbers Tools to work (and play) with the divisors of a number Author: John D'Errico	proper divisors, divisors, factors, aliquot, numbers, perfect	104	2	5.0 5.0 \| 3 ratings
07 May 2009	Fibonacci and Lucas numbers A variety of methods are compared for the computation of Fibonacci and Lucas numbers Author: John D'Errico	fibonacci, vpi, memoization, recursion, numbers, lucas	149	0
01 May 2009	wreshape Reshape an array, padding/resizing if necessary to fill out the target size and shape of the array. Author: John D'Errico	array, reshape, numel, size, pad, vector	104	0
17 Apr 2009	Fminsearchcon Extension of fminsearchbnd for general inequality and linear inequality constraints Author: John D'Errico	nonlinear, bounds, optimization, inequality, constraints, bound	123	6	4.66667 4.7 \| 3 ratings
31 Mar 2009	Minimal radius bounding semi-circle Find that minimal radius bounding semi-circle that contains a set of points in the plane Author: John D'Errico	minimum, circle, area, computational geometr..., semicircle, radius	141	1	5.0 5.0 \| 1 rating
22 Mar 2009	Symbolic Polynomial Manipulation Symbolic polynomial manipulation as an exercise in OOP Author: John D'Errico	symbolic polynomials, manipulation, expression, symbolic math, mathematics	158	2	4.8 4.8 \| 5 ratings
18 Feb 2009	Eigenshuffle Consistently sorted eigenvalue and eigenvector sequences Author: John D'Errico	eig, shuffle, eigenvalues, sequence, eigenvectors, sort	119	12	4.42857 4.4 \| 9 ratings
16 Feb 2009	MIN2, MAX2 Global min or max value of a 2-d array, the search may be limited to specified rows or columns Author: John D'Errico	minimum, maximum, max, array, min, element	113	6	4.0 4.0 \| 5 ratings
06 Feb 2009	Circulant matrix The circulant matrix generated from a vector as the first row (or first column) Author: John D'Errico	matrix, hankel, linear algebra, circulant, toeplitz, circul	145	10	5.0 5.0 \| 3 ratings
13 Jan 2009	Automatic Numerical Differentiation Numerical derivative of an analytically supplied function, also gradient, Jacobian & Hessian Author: John D'Errico	multivariable, numerical, multivariate, differentiation, derivative	286	18	4.55556 4.6 \| 9 ratings
25 Aug 2008	Inpainting nan elements in 3-d An extension of inpaint_nans to 3 dimensions Author: John D'Errico	interpolation, nans, replace, extrapolation, inpainting, approximation	135	3	5.0 5.0 \| 3 ratings
16 Jul 2008	Partitions of an integer List all partitions of an integer Author: John D'Errico	integer partitions, partition, money changing, function	140	5	5.0 5.0 \| 6 ratings
01 Jul 2008	uniqueperms List of all unique permutations of a vector with (possibly) replicated elements Author: John D'Errico	unique, perms, replicates, mathematics	136	4	5.0 5.0 \| 2 ratings
23 Jun 2008	Fminspleas Efficient nonlinear regression fitting using a constrained, partitioned least squares overlay to fmi Author: John D'Errico	nonlinear least squar..., optimization, partitioned, fit, curve, fminsearch	240	3	5.0 5.0 \| 1 rating
29 May 2008	Adaptive numerical limit estimation Numerical extrapolation of a limit (with an error estimate) from only function values Author: John D'Errico	asymptote, pole, complex, residue, adaptive, derivative	137	4	4.0 4.0 \| 4 ratings
21 Apr 2008	IPDM: Inter-Point Distance Matrix An efficient and accurate Inter-Point Distance Matrix Author: John D'Errico	nearest neighbor, euclidean, distance, interpoint, metric	161	6	4.0 4.0 \| 3 ratings
31 Mar 2008	Moving window standard deviation A (fast) windowed std on a time series Author: John D'Errico	windowed running std ..., dsp	170	5	4.85714 4.9 \| 7 ratings
20 Mar 2008	Polyfitn N-d polynomial regression model Author: John D'Errico	surface, linear regression, polynomial, fit, modeling, interpolation	270	32	4.52632 4.5 \| 21 ratings
21 Feb 2008	mgrep Returns the names of all m-files in a directory or directory tree that contain a search string. Author: John D'Errico	directories, path, grep mfiles search co..., files	147	3	4.0 4.0 \| 1 rating
06 Feb 2008	spheresegmentvolume Volume of a (hyper)sphere, sphere cap, or any band through a sphere defined by two parallel planes Author: John D'Errico	integral, hypersphere, computational geometr..., sphere cap, sphere, segment	138	12	5.0 5.0 \| 2 ratings
14 Dec 2007	(Block) tri-diagonal matrices Generate (block) tridiagonal matrices Author: John D'Errico	block tridiagonal mat..., matrices	163	7	5.0 5.0 \| 8 ratings
10 Dec 2007	Estimatenoise Noise variance estimation from a signal vector or array Author: John D'Errico	noise, smoothing, variance, dsp, curve	196	8	5.0 5.0 \| 8 ratings
26 Nov 2007	loopchoose A looped version of nchoosek Author: John D'Errico	nchoosek, combinations, mathematics, general	144	3	5.0 5.0 \| 3 ratings
23 Oct 2007	Movingslope Sliding window regression to compute slope estimates along a curve Author: John D'Errico	slope, moving average, sav, filter, noise, differentiation	177	1	5.0 5.0 \| 1 rating
19 Sep 2007	LSE A linear least squares solver, subject to linear equality constraints Author: John D'Errico	regression, least, squares, linear, linear algebra, constraints	182	4	5.0 5.0 \| 3 ratings
10 Sep 2007	Consolidator Consolidates common elements in x (may be n-dimensional), aggregating corresponding y. Author: John D'Errico	consolidates, elements, delaunay, unique, matrices, replicates	160	16	5.0 5.0 \| 12 ratings
30 Jul 2007	Minimal Bounding Rectangle Minimal bounding rectangle around points in the (x,y) plane Author: John D'Errico	minimum, area, computational geometr..., rectangle, bounding, perimeter	214	5	4.5 4.5 \| 3 ratings
11 Jul 2007	Minimum Radius Bounding Circle Minimum radius bounding circle around a planar set of points Author: John D'Errico	enclose, circle, minimum, optimum, radius, enclosing	165	8	4.85714 4.9 \| 7 ratings
25 Apr 2007	Minboolspan Find a minimal subset of columns that "spans" the columns of a boolean matrix Author: John D'Errico	matrices, spanning covering min...	124	1	5.0 5.0 \| 1 rating
19 Mar 2007	Minimum area bounding triangle Triangle of minimal area that encloses data in the (x,y) plane Author: John D'Errico	triangle, minimum, area, enclosing, bounding, minimal	132	1	5.0 5.0 \| 1 rating
06 Mar 2007	RMSEARCH Randomly multiply started optimizations for global problems Author: John D'Errico	starting values, optimization, random, multistart, multiple start	102	4	5.0 5.0 \| 3 ratings
02 Mar 2007	Incremental growth of an array, revisited Efficient dynamic growth of an array by concatenation. Author: John D'Errico	cat, matrix manipulation, matrices, horzcat, utilities, vertcat	140	0
20 Feb 2007	Graphical data selection tool A graphical tool to modify your plots and locate data points Author: John D'Errico	delete, data select, graphics, remove, selection, data exploration	158	11	5.0 5.0 \| 14 ratings
24 Jan 2007	Minimum Radius Bounding Sphere Minimum radius bounding sphere around a 3d set of points Author: John D'Errico	enclose, minimum, sphere, optimum, radius, enclosing	220	11	3.8 3.8 \| 7 ratings
07 Dec 2006	Optimization Tips and Tricks Tips and tricks for use of the optimization toolbox, linear and nonlinear regression. Author: John D'Errico	nonlinear regression ..., linear regression, optimization	381	34	4.71429 4.7 \| 37 ratings
30 Oct 2006	Inhull Efficient test for points inside a convex hull in n dimensions Author: John D'Errico	computational geometr..., tsearch, convex hull, convhulln, hull, interior	166	15	4.38462 4.4 \| 14 ratings
28 Sep 2006	fminsearchbnd Bound constrained optimization using fminsearch. Author: John D'Errico	unconstrained, transformation, optimization, bound constraints, problem, fminsearch	227	28	4.96429 5.0 \| 28 ratings
20 Sep 2006	Color name identification: fuzzycolor Efficient identification of color names for any RGB Author: John D'Errico	color name names iden..., color	152	5	3.0 3.0 \| 2 ratings
22 Aug 2006	Surface Fitting using gridfit Model 2-d surfaces from scattered data Author: John D'Errico	2d surfaces, surface, surface fitting, modeling, regression, interpolation	432	46	4.87755 4.9 \| 49 ratings
28 Jun 2006	inpaint_nans Interpolates (& extrapolates) NaN elements in a 2d array. Author: John D'Errico	extrapolates, approximation, inpaint, file exchange select, interpolation, triangulation	187	27	4.87097 4.9 \| 32 ratings
22 Jun 2006	Nonlinear Regression Shapes Curve fitting, empirical modeling, and an appreciation of shape Author: John D'Errico	modeling, shape, fitting, empirical, nonlinear regression, optimization	109	3	5.0 5.0 \| 2 ratings
03 May 2006	Fermat-like tuples Searches for Fermat-like tuples: x1^n + x2^n + ... + xp^n = z^m Author: John D'Errico	fermats last theorem ...	129	0
17 Apr 2006	Unitize Scales columns/rows of an array to have unit norm Author: John D'Errico	normalize vectors uni..., matrices	137	0	5.0 5.0 \| 1 rating
10 Apr 2006	Piecewise functions Evaluate a general piecewise function of one variable Author: John D'Errico	piecewise, variable, functions, specify	310	13	4.22222 4.2 \| 10 ratings
28 Mar 2006	Interpne Extension of interpn to allow extrapolation Author: John D'Errico	multidimensional, extrapolation, trilinear, t, bilinear, approximation	174	0
13 Mar 2006	Tessquad n-d Gaussian quadrature over a tessellated domain or scattered data Author: John D'Errico	integration, quadrature, mathematics, tessellation	99	3	5.0 5.0 \| 1 rating
27 Jan 2006	Inverse (integrated) gradient Vectorized & fully sparse 1-d, 2-d, & 3-d integrated gradients Author: John D'Errico	gradient inverse inte..., 1d, integration, methods, arrays, gradient	133	3	5.0 5.0 \| 3 ratings
16 Jan 2006	parse_pv_pairs Parsing property/value pairs for function input. Author: John D'Errico	argument, pairs, namevalue, propertyvalue	167	2	5.0 5.0 \| 2 ratings
14 Oct 2005	Unround Unrounds points on a curve to produce the smoothest curve which is consistent with rounding. Author: John D'Errico	shapers, interpolation, lookup table, rounding, image processing, approximation	125	0
22 Apr 2005	Incremental Growth of an Array Efficient growth of an array using concatenation. Author: John D'Errico	concatenation, efficient, matrix manipulation, matrices, array, growth	148	2
12 Nov 1999	bindex.m BINDEX solves the binning problem. Author: John D'Errico	interpolation, index, bindex, binning, real line, points	148	6	4.75 4.8 \| 4 ratings
20 Nov 1998	Morel (Bridge Helper) Morel allows the user to generate random bridge hands following any given hand type, etc. Author: John D'Errico	morel, bridge, helper, games, game	123	0
1 - 59 of 59
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