npv_irr {forestmangr}

Calculate Net Present Value and other economic variables

Description

Get the net present value, internal rate of return, and other economic variables, given cost and revenue values.

Usage

npv_irr(
  df,
  year,
  cost,
  revenue,
  rate,
  output = "full",
  sens_limits = c(1, 30),
  big_mark = ",",
  dec_mark = ".",
  prefix = "$"
)

Arguments

df

A data frame.

year

Quoted name of the year variable.

cost

Quoted name of the costs variable.

revenue

Quoted name of the revenue variable.

rate

Numeric value of the yearly rate to be used.

output

Selects different output options. It can be either "full" for a list containing a sensibility plot and a data frame with a single observation and one column for each variable, or "simple" for a two column data frame with one observation for each calculated variable. Default: "simple".

sens_limits

Selects the rate rage used in the sensibility plot. This is a numeric vector with two elements, the initial and final rate to be used as range. These can vary between 0 and 100. Default: c(1,30).

big_mark

Selects thousands separator. Can be either ".", " " or ",". Default: ",".

dec_mark

Selects decimal separator. Can be either "," or ".". Default: ".".

prefix

selects the prefix for the y axis in the sensibility plot. Can be either "$" or "R$". Default: "$".

Value

A data frame, or a list, according to output.

Author(s)

Sollano Rabelo Braga [e-mail]

Examples

## Not run: 
library(forestmangr)
data(exfm22)

npv_irr(exfm22,"year","cost","revenue",rate=8.75)

# To also get a sensibility plot, use

npv_irr(exfm22,"year","cost","revenue",rate=8.75, output="full")

## End(Not run)