solveSystem: Solve a system of equations.

In mivanic/solveR: A solver of a system of equations (entered as formulas)

Description

solveSystem returns a set of endogenous variables that solve the system.

Usage

solveSystem(formulas, endogenous, exogenous, lowerBounds = NULL,
  upperBounds = NULL, maxIterations = 100, maxError = 5e-09)

Arguments

formulas	A list of formulas
endogenous	A list of variables to be used in evaluation (variables may be scalars, vectors or matrices)
exogenous	A list of parameters to be used in evaluation
lowerBounds	A list of lower bounds for endogenous variables
upperBounds	A list of upper bounds for endogenous variables
maxIterations	A maximum number of times the Newton algorithm should be applied (default value = 100)
maxError	Maximum total absolute error of all equations (default value = 5e-9)

Value

A vector of real numbers

Examples

solveSystem(formulas =
          list(price = price ~ 0.3 * variablecost + coefficient1,
               variablecost  = variablecost ~ 0.5 * price + coefficient2),
       endogenous = list(price = 1, variablecost=0.4),
       exogenous = list(coefficient1=0.56, coefficient2=0.7))
solveSystem(formulas =
          list(price = price ~ 0.3 * variablecost + coefficient1,
               variablecost  = variablecost ~ 0.5 * price + coefficient2),
       endogenous = list(price = c(wheat=1, rice=4), variablecost=c(wheat=0.4, rice=0.2)),
       exogenous = list(coefficient1=c(wheat=0.56, rice=4), coefficient2=c(wehat=0.7, rice=0.9)))

mivanic/solveR documentation built on Nov. 7, 2019, 12:13 a.m.