thigmophobe {plotrix}

Find the direction away from the closest point

Description

Find the direction away from the closest point

Usage

 thigmophobe(x,y=NULL,names=seq_along(z),xlog=par("xlog"),ylog=par("ylog"),
  usr=par("usr"),pin=par("pin"),eps=.Machine$double.eps,pi=base::pi)

Arguments

x, y

Numeric data vectors. Typically the x/y coordinates of plotted points. If arrays are passed, they will be silently coerced to numeric vectors.

names

Names for the vector of directions.

xlog, ylog

Flags for logarithmic axes. See Note.

usr

The extent of the plot in user units.

pin

Extent of the plot in inches.

eps

smallest number that can be represented on the system.

pi

value of pi.

Details

‘⁠thigmophobe⁠’ returns the direction (as 1|2|3|4 - see pos= in ‘⁠text⁠’) away from the nearest point to each of the points described by ‘⁠x⁠’ and ‘⁠y⁠’.

Value

A vector of directions away from the point nearest to each point.

Note

‘⁠thigmophobe⁠’ is typically used to get the offsets to automatically place labels on a scatterplot or similar using ‘⁠thigmophobe.labels⁠’ to avoid overlapping labels. The name means "one who fears being touched".

The ‘⁠plot.span⁠’, ‘⁠xlog⁠’ and ‘⁠ylog⁠’ arguments were added to allow ‘⁠thigmophobe⁠’ to be used outside of base graphics.

Author(s)

Bill Venables

See Also

thigmophobe.labels

Examples

 x<-rnorm(10)
 y<-rnorm(10)
 thigmophobe(x,y)