Preprocessing: Diagram Selector

This is a class for extracting finite or essential points in persistence diagrams.

Author

Mathieu Carrière

Super classes

rgudhi::PythonClass -> rgudhi::SKLearnClass -> rgudhi::PreprocessingStep -> DiagramSelector

Methods

Public methods

• DiagramSelector$new()

• DiagramSelector$clone()

Inherited methods

• rgudhi::PythonClass$get_python_class()
• rgudhi::PythonClass$set_python_class()
• rgudhi::SKLearnClass$get_params()
• rgudhi::SKLearnClass$set_params()
• rgudhi::PreprocessingStep$apply()
• rgudhi::PreprocessingStep$fit()
• rgudhi::PreprocessingStep$fit_transform()
• rgudhi::PreprocessingStep$transform()

---

Method new()

The DiagramSelector constructor.

Usage

DiagramSelector$new(
  use = FALSE,
  limit = Inf,
  point_type = c("finite", "essential")
)

Arguments

use

A boolean value specifying whether to use the class. Defaults to FALSE.

limit

A numeric value specifying the second coordinate value which is the criterion for being an essential point. Defaults to \(\infty\).

point_type

A string specifying the type of the points that are going to be extracted. Choices are either “finite” or “essential”. Defaults to “finite”.

Returns

An object of class DiagramSelector.

---

Method clone()

The objects of this class are cloneable with this method.

Usage

DiagramSelector$clone(deep = FALSE)

Arguments

deep

Whether to make a deep clone.

Examples

if (FALSE) { # reticulate::py_module_available("gudhi")
X <- seq_circle(10)
ac <- AlphaComplex$new(points = X)
st <- ac$create_simplex_tree()
dgm <- st$compute_persistence()$persistence_intervals_in_dimension(0)
ds <- DiagramSelector$new()
ds$apply(dgm)
ds$fit_transform(list(dgm))
}