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CapitalR

John T. Buynak

2019-11-22

Functions

Annuity Loan Calculation

Calculates the payment, present value, future value, rate, or the number of periods

annuity(type = "pmt", pv = -2000, fv = 0, n = 4 * 12, r = 0.06/12, end = TRUE)

Interest Payment

Calculates the interest portion of the periodic payment at period “x”

ipmt(pv = 20000, fv = 0, n = 5 * 12, r = 0.05/12, x = 12, end = TRUE)

Principal Payment

Calculates the principal portion of the periodic payment at period “x”

ppmt(pv = 20000, fv = 0, n = 5 * 12, r = 0.05/12, x = 12, end = TRUE)

Amortization Schedule

Returns the loan amortization schedule

schedule(r = 0.06/12, n = 10 * 12, pv = -5000, fv = 0, end = TRUE)

Amortization Schedule with Irregular Payments

Returns the loan amortization schedule with irregular payments

irregular(payments = c(0, 200, -100, 500), dates = c("2019-01-01", "2019-02-08", "2019-03-20", "2019-05-05"), apr = 0.05, pv = 2000, info = TRUE)

Present Value

pv(fv = 20000, n = 5 * 12, r = 0.08 / 12)

Future Value

fv(pv = 20000, n = 5 * 12, r = 0.08 / 12)

Geometric Mean Return

Computes the geometric mean return of a vector of periodic returns in decimal form

geometric(c(0.20, 0.05, -0.50, 0.75, 0.25))

Return Calculation

Calculates the periodic return, supply a vector of numerical asset prices

r.calc(c(80, 65, 70, 75, 90, 105))