Last data update: 2014.03.03

 R: Histogram for factor levels
byf.histR Documentation

Histogram for factor levels

Description

Draws a histogram of a numeric variable per level of a factor.

Usage

byf.hist(formula, data, sep = FALSE, density = TRUE, xlab = NULL, ylab = NULL)

Arguments

formula

a formula of the form a ~ b where a gives the data values and b a factor giving the corresponding groups.

data

an optional data frame containing the variables in the formula formula. By default the variables are taken from environment(formula).

sep

logical. If TRUE a histogram is displayed per level of the factor. If FALSE all levels are displayed on the same histogram.

density

logical. If TRUE density polygons are displayed, if FALSE classical counts are displayed.

xlab

label for x-axis (name of the response variable as default).

ylab

label for y-axis ("Density" or "Frequency" as default, depending on the type of histogram).

Author(s)

Maxime Herv<c3><a9> <mx.herve@gmail.com>

See Also

hist

Examples

data(iris)
byf.hist(Sepal.Length~Species,data=iris)

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)

R is free software and comes with ABSOLUTELY NO WARRANTY.
You are welcome to redistribute it under certain conditions.
Type 'license()' or 'licence()' for distribution details.

R is a collaborative project with many contributors.
Type 'contributors()' for more information and
'citation()' on how to cite R or R packages in publications.

Type 'demo()' for some demos, 'help()' for on-line help, or
'help.start()' for an HTML browser interface to help.
Type 'q()' to quit R.

> library(RVAideMemoire)
*** Package RVAideMemoire v 0.9-56 ***
> png(filename="/home/ddbj/snapshot/RGM3/R_CC/result/RVAideMemoire/byf.hist.Rd_%03d_medium.png", width=480, height=480)
> ### Name: byf.hist
> ### Title: Histogram for factor levels
> ### Aliases: byf.hist
> 
> ### ** Examples
> 
> data(iris)
> byf.hist(Sepal.Length~Species,data=iris)
> 
> 
> 
> 
> 
> dev.off()
null device 
          1 
>


Created & Maintained by Osamu Ogasawara (osamu.ogasawara@gmail.com) and IMSBIO