quadforms

Version 1.2.1 (1.75 KB) by Giampiero Campa
Convert quadratics from Homogeneous to Center form and back.
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Updated 13 Sep 2023
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quadratic-form-conversion

Convert quadratics from Homogeneous to Center form and back.

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This zip file contains 2 functions to transform generic (nD) quadratic hyper-surfaces from homogeneous form (that is [x' 1]E[x;1]=0) to center form (that is (x'-c')inv(Q)(x-c)=1, which is used for example in the ellipsoidal toolbox).

Examples: % zero-centered ellipse of semiaxes 1 and 2 % center to homogeneous form: E=c2h(diag([1 4]),[0 0]') % homogeneous to center form: [Q,c]=h2c(E)

Cite As

Giampiero Campa (2026). quadforms (https://github.com/giampy1969/quadratic-form-conversion/releases/tag/v1.2.1), GitHub. Retrieved .

MATLAB Release Compatibility
Created with R2009b
Compatible with any release
Platform Compatibility
Windows macOS Linux
Categories
Find more on Mathematics and Optimization in Help Center and MATLAB Answers
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Version Published Release Notes
1.2.1

See release notes for this release on GitHub: https://github.com/giampy1969/quadratic-form-conversion/releases/tag/v1.2.1
1.2.0.0

Added BSD license file
1.0.0.0

To view or report issues in this GitHub add-on, visit the GitHub Repository.
To view or report issues in this GitHub add-on, visit the GitHub Repository.