Parse text that defines a the constraints

Parse text that defines a the constraints

Usage

parse_constraints(constraints, obsnames)

Arguments

constraints

A list of character strings

obsnames

Vector of names of the observed variables in the graph

Value

A data frame with columns indicating the variables being constrained, what the values of their parents are for the constraints, and the operator defining the constraint (equality or inequalities).

Examples

constrainttext <- "X(Z = 1) >= X(Z = 0)"
obsnames <- c("Z", "X", "Y")
parse_constraints(constraints = constrainttext, obsnames = obsnames)
#>   leftout rightout operator leftcond rightcond
#> 1       X        X       >=      Z=1       Z=0