Pivoting

This code can be used to solve a set of linear equations using Gaussian elimination with partial pivoting. Note that the Augmented matrix rows are not directly switches. Instead a buffer vector is keeping track of the switches made. The final solution is determined using backward substitution.

The "GEE! It's Simple" package illustrates Gaussian elimination with partial pivoting, which produces a factorization of P*A into the product L*U where P is a permutation matrix, and L and U are lower and upper triangular, respectively.The functions in this package are accurate, but they are far...

Solves the linear least squares problem with nonnegative variables using the newton's algorithm in:Portugal, Judice and Vicente, A comparison of block pivoting and interior point algorithms for linear least squares problems with nonnegative variables, Mathematics of Computation, 63(1994), pp....


Platforms: Matlab

Solves the linear least squares problem with nonnegative variables using the predictor-corrector algorithm in:Portugal, Judice and Vicente, A comparison of block pivoting and interior point algorithms for linear least squares problems with nonnegative variables, Mathematics of Computation,...


Platforms: Matlab

The m-file finds the elimination matrices (and scaling matrices) to reduce any A matrix to the identity matrix using the Gauss-Jordan elimination method without pivoting. Using the matrices gotten it computes the inverse of the A matrix.


Platforms: Matlab

NET Windows Forms OLAP control add OLAP functionality to your applications. Excellent performance. Relational databases with millions records. All OLAP operations like drilling, pivoting, filtering, grouping, drill through. Splendid user interface and powerful API designed to create true OLAP...


Platforms: Windows

This is a test version. It passed two test cases and return the right result. More tests should help to improve this code. Your suggestions are welcome in the continuous improvements


Platforms: Matlab

We focus on the lectures 20, 21, and 22 of the book "Numerical Linear Algebra" by Trefethen and Baum.


Platforms: Matlab

rrlu computes a rank revealing LU factorization of a general m-by-n real full matrix A using partial pivoting with row and column interchanges.The factorization has the formA(P,Q) = L * Uwhere P and Q are permutation vectors, L is lower triangular(lower trapezoidal if m > n), and U is upper...


Platforms: Matlab

Currently RQ, QL, and LQ factorizations are not included in Matlab. Therefore I wrote these mex files, which uses the LAPACK routines. (although these factorizations can also be done by QR and additional matrix manipulations) QR1 is added to complete the set. They can also handle empty matrices....


Platforms: Matlab

To compute the LU factorization under default settings: [L U p q] = lucp(A)This produces a factorization such that L*U = A(p,q). Vectors p and q permute the rows and columns, respectively.The pivot tolerance can be controlled: [L U p q] = lucp(A,tol)The algorithm will terminate if the absolute...


Platforms: Matlab

Pivot® software from Portrait Displays, Inc. lets you rotate your computer display from landscape to portrait position, making documents, e-mail and web browsing easier to manage. 1. Supports multiple displays (Windows® 2000 and XP) 2. Dynamically switches from portrait to landscape, and back...


Platforms: Windows

HPL is a software package that solves a (random) dense linear system in double precision (64 bits) arithmetic on distributed-memory computers. It can thus be regarded as a portable as well as freely available implementation of the High Performance Computing Linpack Benchmark. The algorithm used...


Platforms: *nix

OLAP Statistics for Microsoft Outlook enables you to select both Outlook and user-defined custom fields of interest, and then explore them in a multi-dimensional view with the capability of complex calculations, trend analysis and sophisticated data modeling, all from inside your Outlook. The...


Platforms: Windows

Unsurrogater is a powerful utility that allows you to search for and manage duplicate files across different data sources. With unsurrogater you can do the following:- Search for duplicate files inside Disk Drives, Network Shares, CD/DVD - ROMs, FTP Server & Sharepoint Server. Search...


Platforms: Windows

RadarCube is a fast and powerful ASP.NET and Silverlight OLAP control providing you with a unique chance of supplying the web site with the MS Analysis 2000 or 2005 client abilities. It is written in C# and can be an excellent substitute for the OWC PivotTable control. The main features are: -...


Platforms: Windows

Combine two OpenOffice Calc tables into one based on a common column of data from each table. Rows from the two unequal tables will line up perfectly without copying and pasting. Calc 2.0 or higher required.


Platforms: Windows

Rotate many images at once by 90, 180, or 270 degrees in a clockwise or counterclockwise direction. Images will change in filesize.


Platforms: Windows

MeshLab is an open source, portable, and extensible system for the processing and editing of unstructured 3D triangular meshes. The system is aimed to help the processing of the typical not-so-small unstructured models arising in 3D scanning, providing a set of tools for editing, cleaning,...


Platforms: *nix