Helper functions

weighted_rowsums() is used to get the row-wise sums of a matrix after column-wise multiplication by a vector of weights.

interest_accumulation() is used to calculate the new principal after assuming an interest rate and with some external contribution. Used in get_fiscal_costs() when the borrowed principal to fund pandemic response both compounds over time, and increases due to fresh borrowing in each timestep.

annual_rate_daily() is used to convert an annual rate of interest to a daily rate, for use in interest_accumulation() and eventually in get_fiscal_costs().

Usage

drop_null(x)

first(x)

last(x)

weighted_rowsums(x, weights)

interest_accumulation(principal, contribution, rate)

annual_rate_daily(x)