TDA (version 1.9.1)

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

Arguments

x

an object of class diagram

object

an object of class diagram

...

additional arguments affecting the summary produced.

Author

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"]]))