This function constructs the amplitude boxplot.
curvebox_data(align_median, alpha = 0.05, ka = 1)Returns an curvebox object containing:
median_y: median curve
Q1: First quartile
Q3: Second quartile
Q1a: First quantile based on alpha
Q3a: Second quantile based on alpha
minn: minimum extreme curve
maxx: maximum extreme curve
outlier_index: indexes of outlier curves
fmedian: median curve
object from multivariate_karcher_mean() of aligned curves using
the median
quantile value (default=.05, i.e., 95%)
scalar for outlier cutoff (default=1)
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.