pointssegment: Interpolates between two points

In xkcd: Plotting ggplot2 graphics in a XKCD style

Description

This function calculates intermediate points between two points. The intermidate points can be jittered and smoothed with a Bezier curve.

Usage

pointssegment(xbegin, ybegin, xend, yend,
              npoints = 10, xjitteramount= 0, yjitteramount=0, bezier = TRUE)

Arguments

xbegin	A numeric value. Coordinate x of the point from which to interpolate.
ybegin	A numeric value. Coordinate y of the point from which to interpolate.
xend	A numeric value. Coordinate x of the point to which to interpolate.
yend	A numeric value. Coordinate y of the point to which to interpolate.
npoints	Number of points (including the limits).
xjitteramount, yjitteramount	Numeric. Amount of jitter.
bezier	Logical. Use or not the Bezier curves to smooth the jittered data.

Details

It calculates the intermediate points between two points. If there are no jitter amounts, then there are no interpolations.

By default, the data are smoothed using a Bezier curve. It gives 30 points.

Value

A data frame with the interpolated values.

See Also

jitter

Examples

plot(pointssegment(xbegin=0, ybegin=0, xend=10, yend=10))
plot(pointssegment(xbegin=0, ybegin=0, xend=10, yend=10,
                   xjitteramount=2,yjitteramount=2))
plot(pointssegment(xbegin=0, ybegin=0, xend=10, yend=10,
                   xjitteramount=2,yjitteramount=2,bezier=FALSE))

xkcd documentation built on May 2, 2019, 4:47 p.m.