R: Draw Data Symbols

grid.points {grid}

R Documentation

Draw Data Symbols

Description

These functions create and draw data symbols.

Usage

grid.points(x = runif(10),
            y = runif(10),
            pch = 1, size = unit(1, "char"),
            default.units = "native", name = NULL,
            gp=gpar(), draw = TRUE, vp = NULL)
pointsGrob(x = runif(10),
            y = runif(10),
            pch = 1, size = unit(1, "char"),
            default.units = "native", name = NULL,
            gp=gpar(), vp = NULL)

Arguments

`x`	A numeric vector or unit object specifying x-values.
`y`	A numeric vector or unit object specifying y-values.
`pch`	A numeric or character vector indicating what sort of plotting symbol to use.
`size`	A unit object specifying the size of the plotting symbols.
`default.units`	A string indicating the default units to use if `x` or `y` are only given as numeric vectors.
`name`	A character identifier.
`gp`	An object of class `gpar`, typically the output from a call to the function `gpar`. This is basically a list of graphical parameter settings.
`draw`	A logical value indicating whether graphics output should be produced.
`vp`	A Grid viewport object (or NULL).

Details

Both functions create a points grob (a graphical object describing points), but only grid.points draws the points (and then only if draw is TRUE).

Value

A points grob. grid.points returns the value invisibly.

Author(s)

Paul Murrell