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Plot for PredictionClust

Source: R/PredictionClust.R
autoplot.PredictionClust.Rd

Generates plots for mlr3cluster::PredictionClust, depending on argument type:

  • "scatter" (default): scatterplot with correlation values and colored cluster assignments.

  • "sil": Silhouette plot with mean silhouette value as a reference line. Requires package ggfortify.

  • "pca": Perform PCA on data and color code cluster assignments. Inspired by and uses ggfortify::autoplot.kmeans.

Usage

# S3 method for PredictionClust
autoplot(object, task, row_ids = NULL, type = "scatter", ...)

Arguments

object

(mlr3cluster::PredictionClust).

task

(mlr3cluster::TaskClust).

row_ids

row ids to subset task data to ensure that only the data used to make predictions are shown in plots.

type

(character(1)):
Type of the plot. See description.

...

(any): Additional arguments, passed down to the respective geom.

Value

ggplot2::ggplot() object.

Theme

The theme_mlr3() and viridis color maps are applied by default to all autoplot() methods. To change this behavior set options(mlr3.theme = FALSE).

References

Tang Y, Horikoshi M, Li W (2016). “ggfortify: Unified Interface to Visualize Statistical Result of Popular R Packages.” The R Journal, 8(2), 474--485. doi:10.32614/RJ-2016-060 .

Examples

if (requireNamespace("mlr3")) {
  library(mlr3)
  library(mlr3cluster)
  library(mlr3viz)

  task = tsk("usarrests")
  learner = lrn("clust.kmeans", centers = 3)
  object = learner$train(task)$predict(task)

  head(fortify(object))
  autoplot(object, task)
}
#> Warning: Factor variables are omitted in plot