curve_karcher_cov {fdasrvf}

Curve Karcher Covariance

Description

Calculate Karcher Covariance of a set of curves

Usage

curve_karcher_cov(v, len = NA)

Arguments

v

array of sizes n \times T \times N for N shooting vectors of dimension n evaluated on a grid of T points

len

lengths of curves (default = NA)

Value

K covariance matrix

References

Srivastava, A., Klassen, E., Joshi, S., Jermyn, I., (2011). Shape analysis of elastic curves in euclidean spaces. Pattern Analysis and Machine Intelligence, IEEE Transactions on 33 (7), 1415-1428.

Examples

out <- curve_karcher_mean(beta[, , 1, 1:2], maxit = 2)
# note: use more shapes, small for speed
K <- curve_karcher_cov(out$v)