Biplot for NMF factors

Produces a biplot from the output of nmf

Usage

# S4 method for class 'nmf'
biplot(x, factors = c(1, 2), matrix = "w", group_by = NULL, ...)

Arguments

x

an object of class "nmf"

factors

length 2 vector specifying factors to plot.

matrix

either w or h

group_by

a discrete factor giving groupings for samples or features. Must be of the same length as number of samples in object$h or number of features in object$w.

...

for consistency with biplot generic

Value

ggplot2 object

See also

nmf

Examples

# \donttest{
library(Matrix)
A <- rsparsematrix(100, 50, 0.1)
model <- nmf(A, k = 3, seed = 42, tol = 1e-2, maxit = 10)
if (requireNamespace("ggplot2", quietly = TRUE)) {
  biplot(model, factors = c(1, 2))
}

# }