R: Canvas for Geometric Plotting

Canvas {DescTools} | R Documentation

## Canvas for Geometric Plotting

### Description

This is just a wrapper for creating an empty plot with suitable defaults for plotting geometric shapes.

### Usage

    Canvas(xlim = NULL, ylim = xlim, main = NULL, xpd = par("xpd"),
           mar=c(5.1,5.1,5.1,5.1), asp = 1, bg = par("bg"), usrbg = "white", ...)

### Arguments

`xlim, ylim` | the xlims and ylims for the plot. Default is c(-1, 1).
`xpd` | expand drawing area, defaults to `par("xpd")`.
`main` | the main title on top of the plot.
`mar` | set margins. Defaults to c(5.1,5.1,5.1,5.1).
`asp` | numeric, giving the aspect ratio y/x. (See `plot.window` for details. Default is 1.
`bg` | the background color of the plot, defaults to par("bg"), which usually will be "white".
`usrbg` | the color of the user space of the plot, defaults to "white".
`...` | additional arguments are passed to the `plot()` command.

### Details

The plot is created with these settings:
`asp = 1, xaxt = "n", yaxt = "n", xlab = "", ylab = "", frame.plot = FALSE`.

### Value

a list of all the previous values of the parameters changed (returned invisibly)

### Author(s)

Andri Signorell <andri@signorell.net>

### Examples

    Canvas(7)
    text(0, 0, "Hello world!", cex=5)

[Package DescTools version 0.99.38 Index]