extract_indices function

Extract row, time and DO indices from a subset dataframe

This is an internal function. Extracts row, time and DO values from a data subset in a list.

extract_indices(x, subsets, n)

Arguments

• x: data frame.
• subsets: list of data frames.
• n: numeric. Choose which subset in the list to extract data from.

Returns

A `data.table`` object.