Description
Fit data to an ellipse, hyperbola, or parabola. Bootstrapping is available when needed. The conic curve can be rotated through an arbitrary angle and the fit will still succeed. Helper functions are provided to convert generator coefficients from one style to another, generate test data sets, rotate conic section parameters, and so on. References include Nikolai Chernov (2014) "Fitting ellipses, circles, and lines by least squares" <https://people.cas.uab.edu/~mosya/cl/>; A. W. Fitzgibbon, M. Pilu, R. B. Fisher (1999) "Direct Least Squares Fitting of Ellipses" IEEE Trans. PAMI, Vol. 21, pages 476-48; N. Chernov, Q. Huang, and H. Ma (2014) "Fitting quadratic curves to data points", British Journal of Mathematics & Computer Science, 4, 33-60; N. Chernov and H. Ma (2011) "Least squares fitting of quadratic curves and surfaces", Computer Vision, Editor S. R. Yoshida, Nova Science Publishers, pp. 285-302.
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NOTE
Show all 14 flavors
| Flavor | Status |
|---|---|
| r-devel-linux-x86_64-debian-clang | NOTE |
| r-devel-linux-x86_64-debian-gcc | NOTE |
| r-devel-linux-x86_64-fedora-clang | NOTE |
| r-devel-linux-x86_64-fedora-gcc | NOTE |
| r-devel-macos-arm64 | NOTE |
| r-devel-windows-x86_64 | NOTE |
| r-oldrel-macos-arm64 | NOTE |
| r-oldrel-macos-x86_64 | NOTE |
| r-oldrel-windows-x86_64 | NOTE |
| r-patched-linux-x86_64 | NOTE |
| r-release-linux-x86_64 | NOTE |
| r-release-macos-arm64 | NOTE |
| r-release-macos-x86_64 | NOTE |
| r-release-windows-x86_64 | NOTE |
Check details (14 non-OK)
NOTE
r-devel-linux-x86_64-debian-clang
Rd files
checkRd: (-1) fitConic.Rd:66-73: Lost braces
66 | \code{parA }{vector of the six "ABCDEF" coefficients
| ^
checkRd: (-1) fitConic.Rd:67: Lost braces
67 | \code{RSS }{'root sum square' figure of merit describing the relative fit quality}
| ^
checkRd: (-1) fitConic.Rd:68: Lost braces
68 | \code{iters }{number of iterations at convergence}
| ^
checkRd: (-1) fitConic.Rd:69-71: Lost braces
69 | \code{exitCode }{1 means ellipse, 2 means hyperbola, 3 means parabola.
| ^
checkRd: (-1) rotateA.Rd:59: Lost braces; missing escapes or markup?
59 | For \code{xyrot} {a Nx2 array of the x,y coordinates of the rotated data set. }
| ^
NOTE
r-devel-linux-x86_64-debian-gcc
Rd files
checkRd: (-1) fitConic.Rd:66-73: Lost braces
66 | \code{parA }{vector of the six "ABCDEF" coefficients
| ^
checkRd: (-1) fitConic.Rd:67: Lost braces
67 | \code{RSS }{'root sum square' figure of merit describing the relative fit quality}
| ^
checkRd: (-1) fitConic.Rd:68: Lost braces
68 | \code{iters }{number of iterations at convergence}
| ^
checkRd: (-1) fitConic.Rd:69-71: Lost braces
69 | \code{exitCode }{1 means ellipse, 2 means hyperbola, 3 means parabola.
| ^
checkRd: (-1) rotateA.Rd:59: Lost braces; missing escapes or markup?
59 | For \code{xyrot} {a Nx2 array of the x,y coordinates of the rotated data set. }
| ^
NOTE
r-devel-linux-x86_64-fedora-clang
Rd files
checkRd: (-1) fitConic.Rd:66-73: Lost braces
66 | \code{parA }{vector of the six "ABCDEF" coefficients
| ^
checkRd: (-1) fitConic.Rd:67: Lost braces
67 | \code{RSS }{'root sum square' figure of merit describing the relative fit quality}
| ^
checkRd: (-1) fitConic.Rd:68: Lost braces
68 | \code{iters }{number of iterations at convergence}
| ^
checkRd: (-1) fitConic.Rd:69-71: Lost braces
69 | \code{exitCode }{1 means ellipse, 2 means hyperbola, 3 means parabola.
| ^
checkRd: (-1) rotateA.Rd:59: Lost braces; missing escapes or markup?
59 | For \code{xyrot} {a Nx2 array of the x,y coordinates of the rotated data set. }
| ^
NOTE
r-devel-linux-x86_64-fedora-gcc
Rd files
checkRd: (-1) fitConic.Rd:66-73: Lost braces
66 | \code{parA }{vector of the six "ABCDEF" coefficients
| ^
checkRd: (-1) fitConic.Rd:67: Lost braces
67 | \code{RSS }{'root sum square' figure of merit describing the relative fit quality}
| ^
checkRd: (-1) fitConic.Rd:68: Lost braces
68 | \code{iters }{number of iterations at convergence}
| ^
checkRd: (-1) fitConic.Rd:69-71: Lost braces
69 | \code{exitCode }{1 means ellipse, 2 means hyperbola, 3 means parabola.
| ^
checkRd: (-1) rotateA.Rd:59: Lost braces; missing escapes or markup?
59 | For \code{xyrot} {a Nx2 array of the x,y coordinates of the rotated data set. }
| ^
NOTE
r-devel-macos-arm64
Rd files
checkRd: (-1) fitConic.Rd:66-73: Lost braces
66 | \code{parA }{vector of the six "ABCDEF" coefficients
| ^
checkRd: (-1) fitConic.Rd:67: Lost braces
67 | \code{RSS }{'root sum square' figure of merit describing the relative fit quality}
| ^
checkRd: (-1) fitConic.Rd:68: Lost braces
68 | \code{iters }{number of iterations at convergence}
| ^
checkRd: (-1) fitConic.Rd:69-71: Lost braces
69 | \code{exitCode }{1 means ellipse, 2 means hyperbola, 3 means parabola.
| ^
checkRd: (-1) rotateA.Rd:59: Lost braces; missing escapes or markup?
59 | For \code{xyrot} {a Nx2 array of the x,y coordinates of the rotated data set. }
| ^
NOTE
r-devel-windows-x86_64
Rd files
checkRd: (-1) fitConic.Rd:66-73: Lost braces
66 | \code{parA }{vector of the six "ABCDEF" coefficients
| ^
checkRd: (-1) fitConic.Rd:67: Lost braces
67 | \code{RSS }{'root sum square' figure of merit describing the relative fit quality}
| ^
checkRd: (-1) fitConic.Rd:68: Lost braces
68 | \code{iters }{number of iterations at convergence}
| ^
checkRd: (-1) fitConic.Rd:69-71: Lost braces
69 | \code{exitCode }{1 means ellipse, 2 means hyperbola, 3 means parabola.
| ^
checkRd: (-1) rotateA.Rd:59: Lost braces; missing escapes or markup?
59 | For \code{xyrot} {a Nx2 array of the x,y coordinates of the rotated data set. }
| ^
NOTE
r-oldrel-macos-arm64
Rd files
checkRd: (-1) fitConic.Rd:66-73: Lost braces
66 | \code{parA }{vector of the six "ABCDEF" coefficients
| ^
checkRd: (-1) fitConic.Rd:67: Lost braces
67 | \code{RSS }{'root sum square' figure of merit describing the relative fit quality}
| ^
checkRd: (-1) fitConic.Rd:68: Lost braces
68 | \code{iters }{number of iterations at convergence}
| ^
checkRd: (-1) fitConic.Rd:69-71: Lost braces
69 | \code{exitCode }{1 means ellipse, 2 means hyperbola, 3 means parabola.
| ^
checkRd: (-1) rotateA.Rd:59: Lost braces; missing escapes or markup?
59 | For \code{xyrot} {a Nx2 array of the x,y coordinates of the rotated data set. }
| ^
NOTE
r-oldrel-macos-x86_64
Rd files
checkRd: (-1) fitConic.Rd:66-73: Lost braces
66 | \code{parA }{vector of the six "ABCDEF" coefficients
| ^
checkRd: (-1) fitConic.Rd:67: Lost braces
67 | \code{RSS }{'root sum square' figure of merit describing the relative fit quality}
| ^
checkRd: (-1) fitConic.Rd:68: Lost braces
68 | \code{iters }{number of iterations at convergence}
| ^
checkRd: (-1) fitConic.Rd:69-71: Lost braces
69 | \code{exitCode }{1 means ellipse, 2 means hyperbola, 3 means parabola.
| ^
checkRd: (-1) rotateA.Rd:59: Lost braces; missing escapes or markup?
59 | For \code{xyrot} {a Nx2 array of the x,y coordinates of the rotated data set. }
| ^
NOTE
r-oldrel-windows-x86_64
Rd files
checkRd: (-1) fitConic.Rd:66-73: Lost braces
66 | \code{parA }{vector of the six "ABCDEF" coefficients
| ^
checkRd: (-1) fitConic.Rd:67: Lost braces
67 | \code{RSS }{'root sum square' figure of merit describing the relative fit quality}
| ^
checkRd: (-1) fitConic.Rd:68: Lost braces
68 | \code{iters }{number of iterations at convergence}
| ^
checkRd: (-1) fitConic.Rd:69-71: Lost braces
69 | \code{exitCode }{1 means ellipse, 2 means hyperbola, 3 means parabola.
| ^
checkRd: (-1) rotateA.Rd:59: Lost braces; missing escapes or markup?
59 | For \code{xyrot} {a Nx2 array of the x,y coordinates of the rotated data set. }
| ^
NOTE
r-patched-linux-x86_64
Rd files
checkRd: (-1) fitConic.Rd:66-73: Lost braces
66 | \code{parA }{vector of the six "ABCDEF" coefficients
| ^
checkRd: (-1) fitConic.Rd:67: Lost braces
67 | \code{RSS }{'root sum square' figure of merit describing the relative fit quality}
| ^
checkRd: (-1) fitConic.Rd:68: Lost braces
68 | \code{iters }{number of iterations at convergence}
| ^
checkRd: (-1) fitConic.Rd:69-71: Lost braces
69 | \code{exitCode }{1 means ellipse, 2 means hyperbola, 3 means parabola.
| ^
checkRd: (-1) rotateA.Rd:59: Lost braces; missing escapes or markup?
59 | For \code{xyrot} {a Nx2 array of the x,y coordinates of the rotated data set. }
| ^
NOTE
r-release-linux-x86_64
Rd files
checkRd: (-1) fitConic.Rd:66-73: Lost braces
66 | \code{parA }{vector of the six "ABCDEF" coefficients
| ^
checkRd: (-1) fitConic.Rd:67: Lost braces
67 | \code{RSS }{'root sum square' figure of merit describing the relative fit quality}
| ^
checkRd: (-1) fitConic.Rd:68: Lost braces
68 | \code{iters }{number of iterations at convergence}
| ^
checkRd: (-1) fitConic.Rd:69-71: Lost braces
69 | \code{exitCode }{1 means ellipse, 2 means hyperbola, 3 means parabola.
| ^
checkRd: (-1) rotateA.Rd:59: Lost braces; missing escapes or markup?
59 | For \code{xyrot} {a Nx2 array of the x,y coordinates of the rotated data set. }
| ^
NOTE
r-release-macos-arm64
Rd files
checkRd: (-1) fitConic.Rd:66-73: Lost braces
66 | \code{parA }{vector of the six "ABCDEF" coefficients
| ^
checkRd: (-1) fitConic.Rd:67: Lost braces
67 | \code{RSS }{'root sum square' figure of merit describing the relative fit quality}
| ^
checkRd: (-1) fitConic.Rd:68: Lost braces
68 | \code{iters }{number of iterations at convergence}
| ^
checkRd: (-1) fitConic.Rd:69-71: Lost braces
69 | \code{exitCode }{1 means ellipse, 2 means hyperbola, 3 means parabola.
| ^
checkRd: (-1) rotateA.Rd:59: Lost braces; missing escapes or markup?
59 | For \code{xyrot} {a Nx2 array of the x,y coordinates of the rotated data set. }
| ^
NOTE
r-release-macos-x86_64
Rd files
checkRd: (-1) fitConic.Rd:66-73: Lost braces
66 | \code{parA }{vector of the six "ABCDEF" coefficients
| ^
checkRd: (-1) fitConic.Rd:67: Lost braces
67 | \code{RSS }{'root sum square' figure of merit describing the relative fit quality}
| ^
checkRd: (-1) fitConic.Rd:68: Lost braces
68 | \code{iters }{number of iterations at convergence}
| ^
checkRd: (-1) fitConic.Rd:69-71: Lost braces
69 | \code{exitCode }{1 means ellipse, 2 means hyperbola, 3 means parabola.
| ^
checkRd: (-1) rotateA.Rd:59: Lost braces; missing escapes or markup?
59 | For \code{xyrot} {a Nx2 array of the x,y coordinates of the rotated data set. }
| ^
NOTE
r-release-windows-x86_64
Rd files
checkRd: (-1) fitConic.Rd:66-73: Lost braces
66 | \code{parA }{vector of the six "ABCDEF" coefficients
| ^
checkRd: (-1) fitConic.Rd:67: Lost braces
67 | \code{RSS }{'root sum square' figure of merit describing the relative fit quality}
| ^
checkRd: (-1) fitConic.Rd:68: Lost braces
68 | \code{iters }{number of iterations at convergence}
| ^
checkRd: (-1) fitConic.Rd:69-71: Lost braces
69 | \code{exitCode }{1 means ellipse, 2 means hyperbola, 3 means parabola.
| ^
checkRd: (-1) rotateA.Rd:59: Lost braces; missing escapes or markup?
59 | For \code{xyrot} {a Nx2 array of the x,y coordinates of the rotated data set. }
| ^
Check History
NOTE 0 OK · 14 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE Mar 9, 2026
NOTE
r-devel-linux-x86_64-debian-clang
Rd files
checkRd: (-1) fitConic.Rd:66-73: Lost braces
66 | \code{parA }{vector of the six "ABCDEF" coefficients
| ^
checkRd: (-1) fitConic.Rd:67: Lost braces
67 | \code{RSS }{'root sum square' figure of merit describing the relative fit quality}
| ^
checkRd: (-1) fitConic.Rd:68: Lost braces
68 | \code{iters }{number of iterations at convergence}
| ^
checkRd: (-1) fitConic.Rd:69-71: Lost braces
69 | \code{exitCode }{1 means ellipse,
NOTE
r-devel-linux-x86_64-debian-gcc
Rd files
checkRd: (-1) fitConic.Rd:66-73: Lost braces
66 | \code{parA }{vector of the six "ABCDEF" coefficients
| ^
checkRd: (-1) fitConic.Rd:67: Lost braces
67 | \code{RSS }{'root sum square' figure of merit describing the relative fit quality}
| ^
checkRd: (-1) fitConic.Rd:68: Lost braces
68 | \code{iters }{number of iterations at convergence}
| ^
checkRd: (-1) fitConic.Rd:69-71: Lost braces
69 | \code{exitCode }{1 means ellipse,
NOTE
r-devel-linux-x86_64-fedora-clang
Rd files
checkRd: (-1) fitConic.Rd:66-73: Lost braces
66 | \code{parA }{vector of the six "ABCDEF" coefficients
| ^
checkRd: (-1) fitConic.Rd:67: Lost braces
67 | \code{RSS }{'root sum square' figure of merit describing the relative fit quality}
| ^
checkRd: (-1) fitConic.Rd:68: Lost braces
68 | \code{iters }{number of iterations at convergence}
| ^
checkRd: (-1) fitConic.Rd:69-71: Lost braces
69 | \code{exitCode }{1 means ellipse,
NOTE
r-devel-linux-x86_64-fedora-gcc
Rd files
checkRd: (-1) fitConic.Rd:66-73: Lost braces
66 | \code{parA }{vector of the six "ABCDEF" coefficients
| ^
checkRd: (-1) fitConic.Rd:67: Lost braces
67 | \code{RSS }{'root sum square' figure of merit describing the relative fit quality}
| ^
checkRd: (-1) fitConic.Rd:68: Lost braces
68 | \code{iters }{number of iterations at convergence}
| ^
checkRd: (-1) fitConic.Rd:69-71: Lost braces
69 | \code{exitCode }{1 means ellipse,
NOTE
r-devel-macos-arm64
Rd files
checkRd: (-1) fitConic.Rd:66-73: Lost braces
66 | \code{parA }{vector of the six "ABCDEF" coefficients
| ^
checkRd: (-1) fitConic.Rd:67: Lost braces
67 | \code{RSS }{'root sum square' figure of merit describing the relative fit quality}
| ^
checkRd: (-1) fitConic.Rd:68: Lost braces
68 | \code{iters }{number of iterations at convergence}
| ^
checkRd: (-1) fitConic.Rd:69-71: Lost braces
69 | \code{exitCode }{1 means ellipse,
NOTE
r-devel-windows-x86_64
Rd files
checkRd: (-1) fitConic.Rd:66-73: Lost braces
66 | \code{parA }{vector of the six "ABCDEF" coefficients
| ^
checkRd: (-1) fitConic.Rd:67: Lost braces
67 | \code{RSS }{'root sum square' figure of merit describing the relative fit quality}
| ^
checkRd: (-1) fitConic.Rd:68: Lost braces
68 | \code{iters }{number of iterations at convergence}
| ^
checkRd: (-1) fitConic.Rd:69-71: Lost braces
69 | \code{exitCode }{1 means ellipse,
NOTE
r-patched-linux-x86_64
Rd files
checkRd: (-1) fitConic.Rd:66-73: Lost braces
66 | \code{parA }{vector of the six "ABCDEF" coefficients
| ^
checkRd: (-1) fitConic.Rd:67: Lost braces
67 | \code{RSS }{'root sum square' figure of merit describing the relative fit quality}
| ^
checkRd: (-1) fitConic.Rd:68: Lost braces
68 | \code{iters }{number of iterations at convergence}
| ^
checkRd: (-1) fitConic.Rd:69-71: Lost braces
69 | \code{exitCode }{1 means ellipse,
NOTE
r-release-linux-x86_64
Rd files
checkRd: (-1) fitConic.Rd:66-73: Lost braces
66 | \code{parA }{vector of the six "ABCDEF" coefficients
| ^
checkRd: (-1) fitConic.Rd:67: Lost braces
67 | \code{RSS }{'root sum square' figure of merit describing the relative fit quality}
| ^
checkRd: (-1) fitConic.Rd:68: Lost braces
68 | \code{iters }{number of iterations at convergence}
| ^
checkRd: (-1) fitConic.Rd:69-71: Lost braces
69 | \code{exitCode }{1 means ellipse,
NOTE
r-release-macos-arm64
Rd files
checkRd: (-1) fitConic.Rd:66-73: Lost braces
66 | \code{parA }{vector of the six "ABCDEF" coefficients
| ^
checkRd: (-1) fitConic.Rd:67: Lost braces
67 | \code{RSS }{'root sum square' figure of merit describing the relative fit quality}
| ^
checkRd: (-1) fitConic.Rd:68: Lost braces
68 | \code{iters }{number of iterations at convergence}
| ^
checkRd: (-1) fitConic.Rd:69-71: Lost braces
69 | \code{exitCode }{1 means ellipse,
NOTE
r-release-macos-x86_64
Rd files
checkRd: (-1) fitConic.Rd:66-73: Lost braces
66 | \code{parA }{vector of the six "ABCDEF" coefficients
| ^
checkRd: (-1) fitConic.Rd:67: Lost braces
67 | \code{RSS }{'root sum square' figure of merit describing the relative fit quality}
| ^
checkRd: (-1) fitConic.Rd:68: Lost braces
68 | \code{iters }{number of iterations at convergence}
| ^
checkRd: (-1) fitConic.Rd:69-71: Lost braces
69 | \code{exitCode }{1 means ellipse,
NOTE
r-release-windows-x86_64
Rd files
checkRd: (-1) fitConic.Rd:66-73: Lost braces
66 | \code{parA }{vector of the six "ABCDEF" coefficients
| ^
checkRd: (-1) fitConic.Rd:67: Lost braces
67 | \code{RSS }{'root sum square' figure of merit describing the relative fit quality}
| ^
checkRd: (-1) fitConic.Rd:68: Lost braces
68 | \code{iters }{number of iterations at convergence}
| ^
checkRd: (-1) fitConic.Rd:69-71: Lost braces
69 | \code{exitCode }{1 means ellipse,
NOTE
r-oldrel-macos-arm64
Rd files
checkRd: (-1) fitConic.Rd:66-73: Lost braces
66 | \code{parA }{vector of the six "ABCDEF" coefficients
| ^
checkRd: (-1) fitConic.Rd:67: Lost braces
67 | \code{RSS }{'root sum square' figure of merit describing the relative fit quality}
| ^
checkRd: (-1) fitConic.Rd:68: Lost braces
68 | \code{iters }{number of iterations at convergence}
| ^
checkRd: (-1) fitConic.Rd:69-71: Lost braces
69 | \code{exitCode }{1 means ellipse,
NOTE
r-oldrel-macos-x86_64
Rd files
checkRd: (-1) fitConic.Rd:66-73: Lost braces
66 | \code{parA }{vector of the six "ABCDEF" coefficients
| ^
checkRd: (-1) fitConic.Rd:67: Lost braces
67 | \code{RSS }{'root sum square' figure of merit describing the relative fit quality}
| ^
checkRd: (-1) fitConic.Rd:68: Lost braces
68 | \code{iters }{number of iterations at convergence}
| ^
checkRd: (-1) fitConic.Rd:69-71: Lost braces
69 | \code{exitCode }{1 means ellipse,
NOTE
r-oldrel-windows-x86_64
Rd files
checkRd: (-1) fitConic.Rd:66-73: Lost braces
66 | \code{parA }{vector of the six "ABCDEF" coefficients
| ^
checkRd: (-1) fitConic.Rd:67: Lost braces
67 | \code{RSS }{'root sum square' figure of merit describing the relative fit quality}
| ^
checkRd: (-1) fitConic.Rd:68: Lost braces
68 | \code{iters }{number of iterations at convergence}
| ^
checkRd: (-1) fitConic.Rd:69-71: Lost braces
69 | \code{exitCode }{1 means ellipse,
Dependency Network
Version History
new
1.2.1
Mar 10, 2026