A numeric vector containing the indices of non-missing data values
at the specified time point t. If there are no non-missing values or
only one non-missing value, NULL is returned.
Arguments
individual_array
A data matrix or data frame representing individual
data, where rows correspond to time points and columns correspond to
replicates and variables.
t
The time point for which you want to retrieve non-missing data
indices.
n_replicates
The number of replicates in the data matrix.
See Also
which function for finding the indices of non-missing values.