count.overplot: Show overlying points as counts

In plotrix: Various Plotting Functions

Show overlying points as counts

Description

‘⁠count.overplot⁠’ checks for overlying points defined as points separated by a maximum of ‘⁠tol⁠’, a two element numeric vector of the x and y tolerance. Defaults to 1/2 of the width of a lower case "o" in the x direction and 1/2 of the height of a lower case "o" in the y direction.

Usage

 count.overplot(x,y,tol=NULL,col=par("fg"),pch="1",...)

Arguments

x,y	Two numeric data vectors or the first two columns of a matrix or data frame. Typically the x/y coordinates of points to be plotted.
tol	The largest distance between points that will be considered to be overlying.
col	Color(s) for the points (not the numbers).
pch	Symbol(s) to display.
...	additional arguments passed to ‘⁠plot⁠’.

Value

nil

Author(s)

Jim Lemon

See Also

cluster.overplot,sizeplot

Examples

 xy.mat<-cbind(sample(1:10,200,TRUE),sample(1:10,200,TRUE))
 count.overplot(xy.mat,main="count.overplot",
  xlab="X values",ylab="Y values")

plotrix documentation built on Nov. 10, 2023, 5:07 p.m.