Residuals.parabola {conicfit} | R Documentation |
Projecting a given set of points onto an parabola
Description
Residuals.parabola
projects a given set of points onto an
parabola and computing the distances from the points to the parabola
Usage
Residuals.parabola(XY,ParG)
Arguments
XY |
array of sample data |
ParG |
vector 4x1 of the parabola parameters (Vertex(1:2), p, Angle) |
Value
list(RSS , XYproj) |
list with the Residual Sum of Squares and the array of coordinates of projections |
Author(s)
Jose Gama
Source
Nikolai Chernov, 2014 Fitting ellipses, circles, and lines by least squares http://people.cas.uab.edu/~mosya/cl/
N. Chernov, Q. Huang, and H. Ma, 2014 Fitting quadratic curves to data points British Journal of Mathematics & Computer Science, 4, 33-60.
References
Nikolai Chernov, 2014 Fitting ellipses, circles, and lines by least squares http://people.cas.uab.edu/~mosya/cl/
N. Chernov, Q. Huang, and H. Ma, 2014 Fitting quadratic curves to data points British Journal of Mathematics & Computer Science, 4, 33-60.
Examples
XY <- matrix(c(1,7,2,6,5,8,7,7,9,5,3,7,6,2,8,4),8,2,byrow=TRUE)
ParG <- matrix(c(0,0,2,1,0),ncol=1)
Residuals.parabola(XY,ParG)