Description Usage Arguments Value Author(s) Source References Examples
CircleFitBySpath
applies the Geometric circle fit by Spath
1 | CircleFitBySpath(XY, ParIni = NA, epsilon = 1e-06, IterMAX = 50)
|
XY |
array of sample data |
ParIni |
initial guess (a, b, R) |
epsilon |
tolerance (small threshold) |
IterMAX |
maximal number of iterations, with a bad initial guess it may take >100 iterations |
vector(a, b, R) |
vector with the values for the circle: center (a,b) and radius R |
Jose Gama
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
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
1 2 3 4 5 | xy<-calculateCircle(0,0,200,50,randomDist=TRUE,noiseFun=function(x) (x+rnorm(1,mean=0,sd=50)))
plot(xy[,1],xy[,2],xlim=c(-250,250),ylim=c(-250,250));par(new=TRUE)
c5 <- CircleFitBySpath(xy)
xyc5<-calculateCircle(c5[1],c5[2],c5[3])
plot(xyc5[,1],xyc5[,2],xlim=c(-250,250),ylim=c(-250,250),col='magenta',type='l');par(new=TRUE)
|
Loading required package: pracma
Loading required package: geigen
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