convert_rate: Convert Gain from One Time Interval to Another
In stocks: Stock Market Analysis

Description Usage Arguments Value Author(s) References See Also Examples

This is a simple function to convert a proportion gain over one time interval to a proportion gain over a different time interval. For example, you can use this function to figure out that a stock gain of 0.08 (8%) over 70 trading days corresponds to an annualized (i.e. 252-day) gain of 0.319 (31.9%).

1	convert.rate(rate, units.in = 1, units.out = 1)

`rate`	Numeric value (or vector) representing the growth rate of an investment over a period of `units.in` time units. Units could be days, months, years, etc.
`units.in`	Number of time units over which the investment had a growth rate of `rate`.
`units.out`	Number of time units you would like to calculate a growth rate for.

Numeric value (or vector) indicating the proportion gain over units.out time units.

Dane R. Van Domelen

Acknowledgment: This material is based upon work supported by the National Science Foundation Graduate Research Fellowship under Grant No. DGE-0940903.

daily.yearly, yearly.daily

# Calculate annualized gain for an 8% gain over a 70-day period.
convert.rate(rate = 0.08, units.in = 70, units.out = 252)

# Calculate the annual growth rate of a fund that gains 0.02% per day.
convert.rate(rate = 0.0002, units.in = 1, units.out = 252)

# Calculate the annual growth rate of a fund that gains 1% per week.
convert.rate(rate = 0.01, units.in = 1, units.out = 52)

# You invest in AAPL and gain 0.5% in 17 business days. Express as a 5-year
# growth rate.
convert.rate(rate = 0.005, units.in = 17, units.out = 252 * 5)

# Your portfolio has tripled in a 13-year period. Calculate your average annual
# gain.
convert.rate(rate = 2, units.in = 13, units.out = 1)