mad: Make binary dummy variables out of a factor vector

In simba: A Collection of functions for similarity analysis of vegetation data

Description

Make binary dummy variables out of a factor vector

Usage

mad(x, red = TRUE)

Arguments

x	A factor vector. Or a vector that is convertible to a factor.
red	Logical. Shall redundancy be retained? When a factor variable is broken down to binary dummy variables it is typically not wanted to transfer all levels to 0/1 vectors but to skip the last level because the information is already contained in the sum of the other variables.

Value

Returns a data.frame with binary data (0/1) with as many (n) rows as x has levels (with red=TRUE) or with n-1 levels when red=FALSE.

Author(s)

Gerald Jurasinski, [e-mail]

References

Legendre & Legendre 1998. Numerical ecology. Elsevier

See Also

sim, mps

Examples

## load bernina data
data(bernina)
## have a look at summit$year
summits$year
## make binary dummies from that
mad(summits$year)

simba documentation built on May 1, 2019, 8:49 p.m.