Class "BezierCurve": A class to describe a Bezier curve

Description

This class is used to represent a Bezier curve in R, which can then be used for other applications, plotted, etc

Objects from the Class

Objects can be created by calls of the form new("BezierCurve", ...).

Slots

cPoints:

Object of class "list": A list of xyPoint objects, representing control points for the curve

Methods

cPoints:

Returns the cPoints slot

pointList:

Returns a list of all points having been processed with teh getPoints method of xyPoint

bezierPoints:

Returns a matrix giving x & y points (by column) for the complete Bezier curve

lines:

Draws the Bezier curve

show:

Provides a concise display of information

Author(s)

Jeff Gentry

See Also

xyPoint

Examples

V <- letters[1:10]
M <- 1:4
g1 <- randomGraph(V, M, .2)
z <- agopen(g1,"foo")
x <- AgEdge(z)  ## list of AgEdge objects
x[[1]]  ## AgEdge
a <- splines(x[[1]])[[1]]
a  ## BezierCurve

cPoints(a)
pointList(a)
bezierPoints(a)

Results

R version 3.3.1 (2016-06-21) -- "Bug in Your Hair"
Copyright (C) 2016 The R Foundation for Statistical Computing
Platform: x86_64-pc-linux-gnu (64-bit)

R is free software and comes with ABSOLUTELY NO WARRANTY.
You are welcome to redistribute it under certain conditions.
Type 'license()' or 'licence()' for distribution details.

R is a collaborative project with many contributors.
Type 'contributors()' for more information and
'citation()' on how to cite R or R packages in publications.

Type 'demo()' for some demos, 'help()' for on-line help, or
'help.start()' for an HTML browser interface to help.
Type 'q()' to quit R.

> library(Rgraphviz)
Loading required package: graph
Loading required package: BiocGenerics
Loading required package: parallel

Attaching package: 'BiocGenerics'

The following objects are masked from 'package:parallel':

    clusterApply, clusterApplyLB, clusterCall, clusterEvalQ,
    clusterExport, clusterMap, parApply, parCapply, parLapply,
    parLapplyLB, parRapply, parSapply, parSapplyLB

The following objects are masked from 'package:stats':

    IQR, mad, xtabs

The following objects are masked from 'package:base':

    Filter, Find, Map, Position, Reduce, anyDuplicated, append,
    as.data.frame, cbind, colnames, do.call, duplicated, eval, evalq,
    get, grep, grepl, intersect, is.unsorted, lapply, lengths, mapply,
    match, mget, order, paste, pmax, pmax.int, pmin, pmin.int, rank,
    rbind, rownames, sapply, setdiff, sort, table, tapply, union,
    unique, unsplit

Loading required package: grid
> png(filename="/home/ddbj/snapshot/RGM3/R_BC/result/Rgraphviz/BezierCurve-class.Rd_%03d_medium.png", width=480, height=480)
> ### Name: BezierCurve-class
> ### Title: Class "BezierCurve": A class to describe a Bezier curve
> ### Aliases: BezierCurve-class BezierCurve cPoints pointList bezierPoints
> ###   bLines show,BezierCurve-method lines,BezierCurve-method
> ###   bLines,BezierCurve-method bezierPoints,BezierCurve-method
> ###   pointList,BezierCurve-method cPoints,BezierCurve-method
> ### Keywords: classes
> 
> ### ** Examples
> 
> V <- letters[1:10]
> M <- 1:4
> g1 <- randomGraph(V, M, .2)
> z <- agopen(g1,"foo")
> x <- AgEdge(z)  ## list of AgEdge objects
> x[[1]]  ## AgEdge
Error in x[[1]] : subscript out of bounds
Execution halted