Boxplot per category with respect to a categorical variable and a set of quantitative variables

Description

Returns as many boxplots as there are categories for a given categorical variable of interest (in most cases, the product variable). The boxplots are automatically generated for all the quantitative variables (in our type of applications, variables are often sensory descriptors).

Usage

boxprod(donnee, col.p, firstvar, lastvar = ncol(donnee), 
    numr = 2, numc = 2)

Arguments

Details

Missing values are ignored when forming boxplots.

Author(s)

F Husson husson@agrocampus-ouest.fr
S Le Sebastien.Le@agrocampus-ouest.fr

References

Becker, R. A., Chambers, J. M. and Wilks, A. R. (1988) The New S Language. Wadsworth & Brooks/Cole.
Chambers, J. M., Cleveland, W. S., Kleiner, B. and Tukey, P. A. (1983) Graphical Methods for Data Analysis. Wadsworth & Brooks/Cole.

See Also

boxplot which does the computation, bxp for the plotting and more examples; and stripchart for an alternative (with small data sets).

Examples

data(chocolates)
boxprod(sensochoc, col.p = 4, firstvar = 5, numr = 2, numc = 2)

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(SensoMineR)
Loading required package: FactoMineR
> png(filename="/home/ddbj/snapshot/RGM3/R_CC/result/SensoMineR/boxprod.Rd_%03d_medium.png", width=480, height=480)
> ### Name: boxprod
> ### Title: Boxplot per category with respect to a categorical variable and
> ###   a set of quantitative variables
> ### Aliases: boxprod
> ### Keywords: univar
> 
> ### ** Examples
> 
> data(chocolates)
> boxprod(sensochoc, col.p = 4, firstvar = 5, numr = 2, numc = 2)
Error in dev.new() : no suitable unused file name for pdf()
Calls: boxprod -> dev.new
Execution halted