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updated 1 year ago

sparseinv: sparse inverse subset by Tim Davis

Computes a subset of inv(A) for a real sparse matrix A, using Takahashi's equations. (sparse, inverse)

sparseinv (A)

sparseinv_install

sparseinv_test (extensive)

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updated 3 years ago

Don't let that INV go past your eyes; to solve that system, FACTORIZE! by Tim Davis

A simple-to-use object-oriented method for solving linear systems and least-squares problems. (factorization, backslash, mldivide)

cheap_condest (d, fail_if_singular)

cod (A, tol)

cod_qmult (Q, X, method)

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updated 4 years ago

MATLAB Primer, 7th Edition, CRC Press, 2005 by Tim Davis

This is not the book itself, but a set of files printed in the book, "MATLAB Primer, 7th Ed." (matlab primer, book program, companion software)

bisect(f,x,tol)

ddom(A, tol)

ddomloops(A,tol)

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updated 5 years ago

Gaussian Elimination Example (with partial pivoting): GEE, it's simple! by Tim Davis

A set of simple functions that illustrate Gaussian Elimination with partial pivoting (linear algebra, gaussian elimination, tutorial)

gee_its_short (A, b)

gee_its_simple (A, b)

gee_its_simple_backsolve (U, b)

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updated 5 years ago

LINFACTOR: uses LU or CHOL to factorize a matrix, or previously computed factors to solve Ax=b by Tim Davis

A simple M-file to solve Ax=b using LU or CHOL. (linear algebra, linfactor, linsolve)

linfactor (arg1, arg2)

lintest (A,b)

lintests

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updated 5 years ago

subsref2: often faster than subsref for C=A(i,j) when A is sparse by Tim Davis

subsref2 is a replacement for subsref, performing the computation C=A(i,j). (sparse, subsref)

subsref2 (A,i,j)

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updated 6 years ago

find_components by Tim Davis

finds the connected components of an image (morphology, segmentation, image)

find_components (A,sorted)

find_components_example(example)

largest_component (A)

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updated 6 years ago

spok: checks if a MATLAB sparse matrix is OK by Tim Davis

Useful for mexFunction authors only (linear algebra, sparse, mex)

spok (A)

spok_install

spok_test

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updated 6 years ago

UFget: MATLAB interface to the UF sparse matrix collection by Tim Davis

Downloads sparse matrices from the web directly into the MATLAB workspace, from a vast range of real (linear algebra, sparse, matrix)

UFget (matrix, UF_Index)

UFget_defaults

UFget_lookup (matrix, UF_Index)

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updated almost 7 years ago

waitmex: using a waitbar inside a C mexFunction by Tim Davis

A set of C routines for creating, updating, and destroying a waitbar from within a mexFunction (waitbar, mexfunction, utilities)

waitex

waitexample

waitmex

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updated almost 7 years ago

gipper: zip selected files, or exclude selected files by Tim Davis

Creates a zip file, using regexp to include and/or exclude filenames that match a list of patterns (path, files, zip)

gipper (directory, include, exclude, exclude_hidden)

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updated almost 7 years ago

MESHND by Tim Davis

creation and nested dissection of regular 2D and 3D meshes (linear algebra, sparse, nested dissection)

meshnd (arg1,n,k)

meshnd_example

meshnd_quality (do_metis)

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updated almost 7 years ago

PageRank demo by Tim Davis

A graphical demo of a random web surfer (aka Google's PageRank) (gallery, google, pagerank)

pagerankdemo (steps)

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updated almost 7 years ago

A pretty seashell GUI by Tim Davis

A GUI that draws a pretty seashell (gallery, seashell, parametric)

seashell (a, b, c, n, azimuth, elevation, res)

shellgui(varargin)

Contents.m

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updated almost 7 years ago

getversion: find MATLAB version number as a double by Tim Davis

Portable replacement for verLessThan on old MATLAB releases (version, ver, verlessthan)

getversion

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updated 7 years ago

hprintf: disable hypertext highlighting by Tim Davis

hprintf is just like fprintf, except that hypertext links are not highlighted in the command window (hypertext, highlight, highlighted)

hprintf (varargin)

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updated almost 8 years ago

A pretty seashell by Tim Davis

a short MATLAB function that displays a pretty seashell (gallery, parametrically define..., surfn 3d)

seashell (a, b, c, n, azimuth, elevation, res)

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updated almost 8 years ago

Slides for the video "Direct Methods for Sparse Linear Systems : the MATLAB sparse backslash" by Tim Davis

Slides for a plenary talk at the 2006 SIAM Annual Meeting (whitepaper, article, paper)

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