getExpr: Get the expression of an entity

In emilopezcano/optimr: Optimization Framework.

Description

Gets the expression of an entity of the model (set, parameter, variable, constant)

Arguments

object	an optimSMS object
entity	One of the character strings "sets", "vars", "pars", "consts"
getid	Item identifier
setSubEq	Equation id for a set substitution (see details)
...	Open to specific-entity options

Details

For parameters and variables, if we want to substitue the representation of some index, we first create an equation whose only left side term is the set identifier we want to substitute, and whose right side terms is the expression to substite with (e.g., change ‘t’ by ‘t-1’)
For sets, add argument SET = TRUE to get the representation of the set, not the index (e.g. in LaTeX using mathcal typography).

emilopezcano/optimr documentation built on May 16, 2019, 5:08 a.m.