SLAMLib

Simple Linear Algebra and Math Library.

Adds some useful functions mainly for matrix manipulation to Calc such as:

• Polyfit - returns polynomial P of n'th degree from the set of variables X and Y.
• Polyval - returns fitted values Y from the polynomial P and the variables X.
• QR - QR factorisation of matrix A such as QR = A.
• Norm - returns Euclidean length of X.
• Rref - reduced row echelon form of matrix A.
• Gaussel - Gaussian elimination of matrix A.
• Backsub - perform backwards substitution of linear equation system which is on reduced row form.
• Zeros - produces an r by c matrix with zeros.
• Ones - produces an r by c matrix with ones.
• Eye - produces an r by c matrix with ones on the main diagonal and all other elements zero.
• Triu - zeros out all element on the lower left triangle of a matrix.

Provided functions may assist in solving e.g. linear equation systems and least square problem. The long outstanding feature of polynomial trend line may easily be created with the use of Polyfit and Polyval. For a brief description on usage, use the Function Wizard.

Installation hint. You may have to log out and back in before the Add-In gets properly registered.

Copyright 2010 Björn Vennberg.