Description Usage Arguments Value Author(s)

Creates a constraint equation based on the input data frame.

1 | ```
constraint.equation(x, weight.var, match.var, replace)
``` |

`x` |
data frame containing needed input data |

`weight.var` |
character name of the column of the input weights |

`match.var` |
character vector of names of columns of 'data' we wish to match on |

`replace` |
logical indicating whether or not bservations weighted in the original weight.var are allowed positive weight in the output. |

A list with two named components: A and b, representing
the components of the constraint equation *Ax = b*

David Kane <[email protected]>

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