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Last data update: 2014.03.03

R: Dot Plots

Dotplot

R Documentation

Dot Plots

Description

Dot plot of numeric variable, either using raw values or binned, optionally classified by a factor. Dot plots are useful for visualizing the distrbution of a numeric variable in a small data set.

Usage

Dotplot(x, by, bin = FALSE, breaks, xlim, 
    xlab = deparse(substitute(x)))

Arguments

`x`	a numeric variable.
`by`	optinally a factor by which to classify `x`.
`bin`	if `TRUE` (the default is `FALSE`), the values of `x` are binned, as in a histogram, prior to plotting.
`breaks`	breaks for the bins, in a form acceptable to the `hist` function; the default is `"Sturges"`.
`xlim`	optional 2-element numeric vector giving limits of the horizontal axis.
`xlab`	optional character string to label horizontal axis.

Details

If the by argument is specified, then one dot plot is produced for each level of by; these are arranged vertically and all use the same scale for x. An attempt is made to adjust the size of the dots to the space available without making them too big.

Value

Returns NULL invisibly.

Author(s)

John Fox jfox@mcmaster.ca

Examples

if (require(car)){
  data(Duncan)
  with(Duncan, {
    Dotplot(education)
    Dotplot(education, bin=TRUE)
    Dotplot(education, by=type)
    Dotplot(education, by=type, bin=TRUE)
  })
}

Results


R version 3.3.1 (2016-06-21) -- "Bug in Your Hair"
Copyright (C) 2016 The R Foundation for Statistical Computing
Platform: x86_64-pc-linux-gnu (64-bit)

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> library(RcmdrMisc)
Loading required package: car
Loading required package: sandwich
> png(filename="/home/ddbj/snapshot/RGM3/R_CC/result/RcmdrMisc/Dotplot.Rd_%03d_medium.png", width=480, height=480)
> ### Name: Dotplot
> ### Title: Dot Plots
> ### Aliases: Dotplot
> ### Keywords: hplot
> 
> ### ** Examples
> 
> if (require(car)){
+   data(Duncan)
+   with(Duncan, {
+     Dotplot(education)
+     Dotplot(education, bin=TRUE)
+     Dotplot(education, by=type)
+     Dotplot(education, by=type, bin=TRUE)
+   })
+ }
> 
> 
> 
> 
> 
> dev.off()
null device 
          1 
>