{"name":"circum","title":"Determine the circumcircle of a triangle","pagetitle":"Determine the circumcircle of a triangle — circum","aliases":"circum","author":"\n Fortran code: R. J. Renka, R code: A. Gebhardt\n","keywords":" spatial ","description":"

This function returns the circumcircle of a triangle.

","usage":"circum(x, y)","arguments":[{"name":"x","description":"

Vector of three elements, giving the x coordinatres of the\n triangle nodes.

"},{"name":"y","description":"

Vector of three elements, giving the y coordinatres of the\n triangle nodes.

"}],"has_args":true,"examples":"# NOT RUN {\ncircum(c(0,1,0),c(0,0,1))\n# }\n","sections":[],"details":"

This is an interface to the Fortran function CIRCUM found in TRIPACK.

","value":"

'x' coordinate of center

'y' coordinate of center

radius

circumcircle radius

signed.area

signed area of riangle (positive iff nodes are\n numbered counter clock wise)

aspect.ratio

ratio \"radius of inscribed circle\"/\"radius of\n circumcircle\", varies between 0 and 0.5\n\n 0 means collinear points, 0.5 equilateral trangle.

\n","references":"

R. J. Renka (1996). Algorithm 751: TRIPACK: a constrained\n two-dimensional Delaunay triangulation package.\n ACM Transactions on Mathematical Software.\n 22, 1-8.

","note":"

This function is mainly intended to be used by circumcircle.

","seealso":"

circumcircle

","package":{"package":"tripack","version":"1.3-9"}}

Description

Usage

Arguments

Value

Details

References

See Also

Examples