Count number of observations in X_i(t)*X_i(s), i=1...,n, with fragmentary functional data X_i

Count number of observations in X_i(t)*X_i(s), i=1...,n, with fragmentary functional data X_i

Usage

n_ts(X_mat)

Arguments

X_mat

nxp Matrix with fragmentary observed functional data of subjects i=1,...,p stored column-wise. Missing data are assumed to be set to NA.