| PhaseBoxplot {fdasrvf} | R Documentation |
This function constructs the amplitude boxplot
PhaseBoxplot(warp_median, alpha = 0.05, kp = 1, showplot = TRUE)
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) |
showplot |
shows plots of functions (default = T) |
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 |
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.
data("simu_warp_median")
out <- PhaseBoxplot(simu_warp_median, showplot=FALSE)