groupHist: Histogramm for classes

In berryFunctions: Function Collection Related to Plotting and Hydrology

Description

Improvement of tapply(x, g, hist) with x and g taken from a data.frame

Usage

groupHist(df, x, g, xlab = "", ylab = "", las = 1, main = NULL,
  unit = NA, ...)

Arguments

df	data.frame object name
x	column name of variable of interest
g	column name of groups (INDEX in tapply, f in split)
xlab, ylab	axis labels. DEFAULT: ""
las	LabelAxisStyle, see par. DEFAULT: 1, means numbers on y-axis upright
main	Main title, internal default based on d, x, unit and g. DEFAULT: NULL
unit	Unit to be written into the default title. DEFAULT: NA
...	further arguments passed to hist

Details

Uses split to categorize into groups.

Value

NULL, used for plotting

Author(s)

Berry Boessenkool, [e-mail], Jan 2015

See Also

hist, tapply

Examples

groupHist(chickwts, weight, "feed", col=2)
groupHist(chickwts, "weight", "feed", col=2, unit="grams at age 6 weeks")
groupHist(chickwts, weight, feed, col=2, breaks=20, main="Hi there")
groupHist(iris, Petal.Width, Species)

berryFunctions documentation built on May 30, 2017, 6:27 a.m.