AtoG {conicfit} | R Documentation |
Conversion of algebraic parameters to geometric parameters
Description
AtoG
converts algebraic parameters (A, B, C, D, E, F) to
geometric parameters (Center(1:2), Axes(1:2), Angle).
Usage
AtoG(ParA)
Arguments
ParA |
vector or array with geometric parameters (A, B, C, D, E, F) |
Format
code is: -1 - degenerate cases 0 - imaginary ellipse 4 - imaginary parell lines 1 - ellipse 2 - hyperbola 3 - parabola
Value
list(ParG , exitCode |
list with algebraic parameters (Center(1:2), Axes(1:2), Angle) and exit code |
Author(s)
Jose Gama
Source
Nikolai Chernov, 2014 Fitting ellipses, circles, and lines by least squares http://people.cas.uab.edu/~mosya/cl/
Nikolai Chernov, 2010 Circular and linear regression: Fitting circles and lines by least squares Chapman & Hall/CRC, Monographs on Statistics and Applied Probability, Volume 117
References
Nikolai Chernov, 2014 Fitting ellipses, circles, and lines by least squares http://people.cas.uab.edu/~mosya/cl/
Nikolai Chernov, 2010 Circular and linear regression: Fitting circles and lines by least squares Chapman & Hall/CRC, Monographs on Statistics and Applied Probability, Volume 117
Examples
AtoG(c(0.0551,-0.0908,0.1588,0.0489,-0.9669,0.1620))