summary.diagram: 'print' and 'summary' for 'diagram'

In TDA: Statistical Tools for Topological Data Analysis

print and summary for diagram

Description

The function print.diagram prints a persistence diagram, a P by 3 matrix, where P is the number of points in the diagram. The first column contains the dimension of each feature (0 for components, 1 for loops, 2 for voids, etc.). Second and third columns are Birth and Death of the features.

The function summary.diagram produces basic summaries of a persistence diagrams.

Usage

## S3 method for class 'diagram'
print(x, ...)
## S3 method for class 'diagram'
summary(object, ...)

Arguments

x	an object of class diagram
object	an object of class diagram
...	additional arguments affecting the summary produced.

Author(s)

Fabrizio Lecci

See Also

plot.diagram, alphaComplexDiag, alphaComplexDiag, gridDiag, ripsDiag

Examples

# Generate data from 2 circles
XX1 <- circleUnif(30)
XX2 <- circleUnif(30, r = 2) + 3
XX <- rbind(XX1, XX2)

DiagLim <- 5         # limit of the filtration
maxdimension <- 1    # computes betti0 and betti1

Diag <- ripsDiag(XX, maxdimension, DiagLim, printProgress = TRUE)

print(Diag[["diagram"]])
print(summary(Diag[["diagram"]]))

TDA documentation built on May 29, 2024, 1:28 a.m.