phbox_data: Phase Boxplot Data

In fdasrvf: Elastic Functional Data Analysis

Phase Boxplot Data

Description

This function constructs the phase boxplot.

Usage

phbox_data(warp_median, alpha = 0.05, kp = 1)

Arguments

warp_median	fdawarp object from time_warping of aligned data using the median.
alpha	quantile value (default=.05, i.e., 95%).
kp	scalar for outlier cutoff (default=1).

Value

Returns a phbox object containing:

• median_x: median warping function

• Q1: First quartile

• Q3: Second quartile

• Q1a: First quantile based on alpha

• Q3a: Second quantile based on alpha

• minn: minimum extreme function

• maxx: maximum extreme function

• outlier_index: indexes of outlier functions

References

Xie, W., S. Kurtek, K. Bharath, and Y. Sun (2016). "A geometric approach to visualization of variability in functional data." Journal of the American Statistical Association in press: 1-34.

fdasrvf documentation built on Nov. 19, 2023, 1:09 a.m.